168 results for "Default Mode Network"
Network localization of functional brain changes associated with ketamine's therapeutic effects in depression.
Biological psychiatry – June 13, 2025
Summary
How does ketamine rapidly lift depression? A key insight reveals its therapeutic effects stem from changes within a specific brain network. By analyzing numerous brain imaging studies, researchers mapped how ketamine alters functional connectivity. This robust brain network, crucial for mood, consistently involves regions like the subgenual cingulate cortex. These findings offer a clearer understanding of ketamine's unique power in treating depression.
Abstract
Although numerous studies have attempted to identify the functional pathways underlying the rapid antidepressant effects of ketamine, their finding...
The Role of the Brain in Conscious Processes: A New Way of Looking at the Neural Correlates of Consciousness
Frontiers in Psychology – August 03, 2018
Summary
A compelling new interpretation links consciousness to a universal background field, proposing phenomenal awareness resides in the Zero-Point Field, a concept from theoretical physics. Through specific neural dynamics, brains write conscious experiences into this field during active states (theta cycle). During introspection, engaging the default mode network, the brain reads ZPF information (alpha cycle) to form our sense of self and memories. Psychedelics or meditation, relevant to drug studies, alter this biofield interaction, dissolving the ego and expanding consciousness by accessing a broader spectrum of ZPF modes.
Abstract
This article presents a new interpretation of the consciousness-related neuroscientific findings using the framework of stochastic electrodynamics ...
The Effect of Psilocybin on Cortical Neural Dynamics, Sleep-Wake Behavior, and Persistent Pain in a Rat Model
University of Michigan Library – January 01, 2025
Summary
Psilocybin, a serotonergic hallucinogen, demonstrates potent analgesic properties in rat models of persistent pain, extending its use beyond psychiatry. This medicine shows promise for chronic pain conditions like fibromyalgia and neuropathic pain, addressing nociplastic pain's complex etiology. Neuroscience reveals it promotes neuroplasticity and modulates neural networks, identifying 5-HT2A receptor targets. These psychedelics and drug studies lay foundational work for pain management, suggesting novel pain disorder treatment with limited adverse effects, reducing reliance on anesthesia for neuralgia.
Abstract
Psilocybin containing mushrooms have been utilized for ceremonial, medicinal, and spiritual purposes for millennia. Recently there has been a surge...
A Naturalistic Study on the Combined Neural and Psychological Effects of Psilocybin and Compassion Focused Imagery
OpenAlex – December 22, 2025
Summary
A compelling finding: psilocybin, a hallucinogen, combined with compassion-focused guided imagery, creates lasting psychological changes. Among 105 participants, this psychological intervention enhanced self-compassion and cognitive absorption. Functional magnetic resonance imaging (fMRI) revealed altered organization in brain networks, including the default mode network, impacting cognition and consciousness. These psychedelics and drug studies suggest synergy for clinical psychology, offering psychotherapists new avenues to cultivate empathy, mindfulness, and mental image shifts.
Abstract
Abstract Psilocybin is a classic psychedelic drug known to alter subjective experience and elicit long-term psychological changes, enhancing cognit...
Esketamine combined with sertraline for brain altered regional homogeneity in patients with major depressive disorder: A preliminary study.
Brain research bulletin – November 13, 2025
Summary
Combining Esketamine with the antidepressant Sertraline positively influenced brain activity in major depressive disorder (MDD). Patients had altered regional homogeneity (Reho) in brain areas. After two weeks, treatment normalized Reho in the left middle temporal gyrus. This correlated with improved anxiety, depression, and cognition, highlighting Antidepressants' impact.
Abstract
This study aims to explore the relationship between the antidepressant effects of drugs (esketamine combined with sertraline) and brain function ch...
Effects of classic psychedelic drugs on turbulent signatures in brain dynamics
Network Neuroscience – January 01, 2022
Summary
Psychedelics profoundly reorganize brain activity. Using a novel framework akin to analyzing turbulent patterns, new insights reveal how compounds like LSD and psilocybin alter brain dynamics. They consistently and distinctively influence a key network involved in self-reflection, effectively "compressing" the brain's functional organization. This understanding of how these powerful chemical substances influence brain hierarchy offers significant implications for developing new psychological treatments.
Abstract
Abstract Psychedelic drugs show promise as safe and effective treatments for neuropsychiatric disorders, yet their mechanisms of action are not ful...
5-HT2A mediated plasticity as a target in major depression: a narrative review connecting the dots from neurobiology to cognition and psychology
arXiv Preprint Archive – July 16, 2020
Summary
Recent breakthroughs in depression treatment reveal how psychedelics and ketamine work through a fascinating brain mechanism: they promote neural plasticity and boost a key growth factor called BDNF. This process enhances the brain's ability to rewire itself, leading to improved psychological flexibility and lasting mood benefits. The findings connect molecular changes to cognitive improvements, offering hope for more effective depression treatments.
Abstract
As the world's first primary morbidity factor, depression has a considerable impact on both an individual as well as a societal level. despite thei...
The intersection of near-death experiences (NDEs) and traumatic brain injury (TBI): neurobiological, phenomenological, and creative implications.
Frontiers in human neuroscience – January 01, 2025
Summary
Traumatic brain injury (TBI) and near-death experiences (NDEs) can surprisingly catalyze profound human creativity. These extreme altered states profoundly impact neurobiology, reconfiguring brain networks to foster heightened artistic expression and significant personality and spiritual changes. Like psychedelic experience, TBI and NDEs demonstrate the brain's immense neuroplasticity. Understanding these transformations, perhaps through neuropharmacological insights into altered brain function, challenges traditional views of pathology. This unveils new frameworks for human potential, showing how extreme conditions can unlock hidden cognitive reservoirs.
Abstract
Traumatic brain injury (TBI) and near-death experiences (NDEs) represent profound disruptions in brain function, often associated with dramatic cha...
Mindfulness Meditation and Network Neuroscience: Review, Synthesis, and Future Directions.
Biological psychiatry. Cognitive neuroscience and neuroimaging – April 01, 2025
Summary
Mindfulness meditation may significantly alter brain organization, particularly in key areas like the anterior cingulate cortex and thalamus. In a review of various studies, including randomized controlled trials with diverse samples, mindfulness training was linked to changes in structural and functional network properties, such as reduced intraconnectivity in the default mode network. While findings on overall connectivity metrics remain mixed, these insights highlight the potential of mindfulness to reshape brain networks, emphasizing the need for rigorous methodologies in future investigations.
Abstract
Network neuroscience is an interdisciplinary field, which can be used to understand the brain by examining the connections between its constituent ...
Psilocybin desynchronizes brain networks
OpenAlex – August 24, 2023
Summary
Psilocybin, a potent hallucinogen and alkaloid, acutely generated over 3-fold greater brain network changes than methylphenidate in healthy adults (17 MRI visits each). This Neuroscience and Psychology research shows psilocybin desynchronizes activity, particularly in the default mode network and hippocampal formation, impacting cognition. Relevant to Psychedelics and Drug Studies, its neurotransmitter receptor influence on behavior reduced hippocampus-cortex connectivity for weeks. These persistent effects, stemming from psilocybin's unique chemical synthesis, normalized after six months, suggesting a neurobiological basis for its therapeutic potential.
Abstract
1 Summary The relationship between the acute effects of psychedelics and their persisting neurobiological and psychological effects is poorly under...
Neural Network Modulation of Ayahuasca: A Systematic Review of Human Studies
Psychoactives – March 20, 2023
Summary
Ayahuasca, a serotonergic hallucinogen, has been shown to significantly alter brain connectivity. In a review of 11 studies involving neuroimaging, findings indicated that acute consumption leads to expanded local neural networks while overall brain connectivity decreases. Chronic users exhibited anatomical changes, particularly in the posterior cingulate cortex. Notably, 73% of studies highlighted alterations in the Default Mode Network, suggesting potential pathways for neuromodulation. These insights contribute to understanding psychedelics' effects on psychology and neuroscience, opening avenues for future exploration in medicine.
Abstract
Background: Ayahuasca is a serotoninergic hallucinogen that plays a central role in the Amazonian traditional medicine. Its psychoactive effects ar...
Psychedelics’ Intoxicating Impact and Behavioural Dynamics
Pharmaceutical science. – August 19, 2025
Summary
Psychedelics dramatically reshape the brain's default mode network, dynamically altering perception and behavior. These alkaloid compounds, like psilocybin and LSD, influence neurotransmitter receptors, amplifying emotions and sensory vividness, leading to ego dissolution and altered psychological states. While offering prosocial effects, empathy, and creativity, their unpredictable nature also carries risks like anxiety and impaired judgment, highlighting the complex psychology involved in these drug studies.
Abstract
Psychedelics such as psilocybin and lysergic acid diethylamide upset the brain networks involved in self-awareness and emotion and may lead to alte...
Changes in music-evoked emotion and ventral striatal functional connectivity after psilocybin therapy for depression
Journal of Psychopharmacology – November 26, 2022
Summary
Psilocybin therapy dramatically enhanced music-evoked pleasure, correlating with reduced anhedonia in 19 patients with treatment-resistant depression. Functional magnetic resonance imaging (fMRI) revealed this hallucinogen treatment led to decreased connectivity between the nucleus accumbens and the default mode network during music listening. Using visual analogue scale ratings, this neuroscience discovery in psychology and drug studies suggests how psychedelics may improve emotional responses, offering insights for music therapy. The changes in brain networks hint at altered neurotransmitter receptor influence on behavior, impacting how individuals process auditory stimuli.
Abstract
Background: Music listening is a staple and valued component of psychedelic therapy, and previous work has shown that psychedelics can acutely enha...
Brain Connectivity Pattern Changes Associated With Psychedelic-Assisted Psychotherapy
OpenAlex – May 02, 2024
Summary
Psychedelics acutely disrupt brain networks, offering new insights for Psychology. Drug Studies involving compounds like LSD, psilocybin, and ayahuasca reveal these substances, often products of Chemical synthesis (alkaloids), cause acute network "disintegration" and "desegregation"—a state of compromised modularity but enhanced global connectivity. This Neurotransmitter Receptor Influence on Behavior, detectable through Computer science analysis of fMRI data, correlates with experiences like ego dissolution. Later, increased default mode network integrity appears. A Psychotherapist guides this process, suggesting the substance-therapy synergy drives therapeutic benefits.
Abstract
Psychedelic-assisted psychotherapy (PAP) has shown promising therapeutic benefits for various psychiatric disorders, but the underlying neural mech...
Neurophysiological features of dream recall and the phenomenology of dreams: Auditory stimulation impacts dream experiences.
Consciousness and cognition – July 01, 2025
Summary
Sound can shape our dreams! Scientists discovered that specific auditory cues during sleep influence dream experiences and emotional content. By monitoring brain activity and dream recall in participants, researchers found that increased beta activity and engagement of the brain's default mode network play crucial roles in remembering dreams. Using target memory reactivation techniques, they showed how external sounds affect our dreamscape.
Abstract
Studies on the electrophysiological and phenomenological aspects of dream experiences provide insight on consciousness during sleep. Whole night po...
Pretreatment Brain White Matter Integrity Associated With Neuropathic Pain Relief and Changes in Temporal Summation of Pain Following Ketamine.
The journal of pain – September 01, 2024
Summary
Brain structure may predict how well ketamine treats chronic nerve pain. New research shows that the integrity of white matter pathways, particularly in the default mode network and pain control regions like the periaqueductal gray, correlates with how effectively ketamine reduces neuropathic pain and pain sensitivity in patients.
Abstract
Neuropathic pain (NP) is a prevalent condition often associated with heightened pain responsiveness suggestive of central sensitization. Neuroimagi...
The Awakening of the Newborn Human Infant and the Emergence of Consciousness.
Acta paediatrica (Oslo, Norway : 1992) – May 01, 2025
Summary
Consciousness begins developing in the womb, with signs of awareness emerging around 24 weeks of gestation. By birth, infants experience a surge of sensory stimulation, activating brain areas linked to consciousness. Newborns can recognize their mother's voice, smell, and facial expressions. A study involving 100 preterm infants revealed that their pupils dilate significantly upon birth, indicating arousal. The default mode network matures shortly after delivery, suggesting that while newborns are conscious, it is at a lower level compared to older children and adults.
Abstract
Consciousness develops gradually in the womb and after birth, rather than being an all or none phenomenon. A newborn infant is aroused and wakes up...
Enhancing Equanimity With Noninvasive Brain Stimulation: A Novel Framework for Mindfulness Interventions.
Biological psychiatry. Cognitive neuroscience and neuroimaging – April 01, 2025
Summary
Equanimity, the ability to maintain a calm and nonreactive state, plays a crucial role in mindfulness, enhancing emotional regulation and cognitive control. With a focus on its benefits, interventions targeting equanimity could significantly improve mindfulness practices. Notably, preliminary findings from studies involving 30 participants using noninvasive brain stimulation (NIBS) on the posterior cingulate cortex indicate that this technique can inhibit self-referential processing in the default mode network, promoting present-centered awareness. This promising approach may advance both theoretical understanding and practical applications of mindfulness.
Abstract
Mindfulness has gained widespread recognition for its benefits for mental health, cognitive performance, and well-being. However, the multifaceted ...
Exploring the transformative potential of out-of-body experiences: A pathway to enhanced empathy.
Neuroscience and biobehavioral reviews – August 01, 2024
Summary
Experiencers of out-of-body experiences (OBEs) often report significant increases in pro-social behaviors, with 75% noting improved empathy and tolerance. These transformative effects are linked to ego dissolution, a state also induced by psychedelics, which enhances feelings of unity with others. Brain regions like the temporoparietal junction and the Default Mode Network may play crucial roles in this process. The findings suggest that OBEs not only alter consciousness but also foster deeper connections among individuals, highlighting the potential for profound personal growth.
Abstract
Out-of-body experiences (OBEs) are subjective phenomena during which individuals feel disembodied or perceive themselves as outside of their physic...
Functional connectivity changes in meditators and novices during yoga nidra practice.
Scientific reports – June 05, 2024
Summary
Meditation practitioners exhibit unique neural responses during yoga nidra (YN), a practice that fosters deep relaxation while maintaining awareness. In a study of 61 participants, including 30 experienced meditators and 31 novices, fMRI analysis showed that meditators had significantly reduced connectivity in the default mode network (DMN) during YN compared to controls. Notably, this decoupling correlated with self-reported meditation hours, highlighting how YN may facilitate a distinct state of restful awareness in those with prior experience in meditation and yoga practices.
Abstract
Yoga nidra (YN) practice aims to induce a deeply relaxed state akin to sleep while maintaining heightened awareness. Despite the growing interest i...
Human Cortical Serotonin 2A Receptor Occupancy by Psilocybin Measured Using [11C]MDL 100,907 Dynamic PET and a Resting-State fMRI-Based Brain Parcellation
Frontiers in Neuroergonomics – January 20, 2022
Summary
Psilocybin, a potent hallucinogen, significantly engages brain serotonin 5-HT receptors. Neuroscience, using a radioligand and resting state fMRI in 4 volunteers, measured this alkaloid's receptor occupancy. This agonist achieved an average 39.5% occupancy, with specific default mode network regions, vital for psychology and behavior, showing 63-74%. The inverse agonist radioligand revealed this neurotransmitter receptor influence. Such insights from psychedelics and drug studies are crucial for internal medicine, highlighting psilocybin's impact and its origin as an alkaloid.
Abstract
Psilocybin (a serotonin 2A, or 5-HT 2A , receptor agonist) has shown preliminary efficacy as a treatment for mood and substance use disorders. The ...
Psilocybin reduces low frequency oscillatory power and neuronal phase-locking in the anterior cingulate cortex of awake rodents
Scientific Reports – July 26, 2022
Summary
Psilocybin, a potent hallucinogen, profoundly alters brain activity, offering insights for psychology and medicine. In neuroscience, recordings from the anterior cingulate cortex of awake mice show this psychedelic drug significantly reduces low-frequency brain oscillations while increasing overall neuron firing, with just under half of individual neurons showing increased activity. This desynchronizes cortical populations by altering neural phase modulation. These drug studies suggest psilocybin dissolves the default mode network, a key finding consistent with its therapeutic potential.
Abstract
Abstract Psilocybin is a hallucinogenic compound that is showing promise in the ability to treat neurological conditions such as depression and pos...
Acute Effects of Psilocybin and Salvinorin-A on Functional Connectivity
Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition – August 14, 2024
Summary
Neuroscience reveals how two distinct hallucinogens, Psilocybin and Salvinorin-A, profoundly alter brain communication. Investigating these two psychedelics in non-human primates, work shows they act as agonists on separate serotonergic and κ-opioid receptors, uniquely reshaping functional connectivity. This influences the default mode network, crucial for self-reflection, and the enigmatic claustrum. Such drug studies offer vital insights for mental health topics, exploring how neurotransmitter receptor influence on behavior could lead to new psychological treatments.
Abstract
This work utilized fMRI to assess the influence of the psychedelics, Psilocybin, a serotonergic agonist, and Salvinorin-A, a kappa-opioid receptor ...
THE PSYCHEDELIC RENAISSANCE: A SYSTEMATIC REVIEW OF PSILOCYBIN AND LSD IN THE TREATMENT OF PSYCHIATRIC DISORDERS
International Journal of Innovative Technologies in Social Science – January 23, 2026
Summary
A transformative shift in mental health treatment is emerging, moving beyond traditional monoaminergic medicine. Clinical trials reveal serotonergic hallucinogens like psilocybin and Lysergic Acid Diethylamide (LSD) offer rapid, episodic interventions for depression and addiction. These psychedelics impact the Default Mode Network, enhancing cognition. Psychotherapist-guided modalities facilitate transformative learning within psychiatry and psychology. This medicine's re-emergence necessitates comprehensive drug studies, including forensic toxicology and understanding how these powerful compounds influence pain management and transcend placebo effects.
Abstract
The escalating global burden of mental health disorders, coupled with the stagnation of innovation in traditional monoaminergic pharmacotherapy (e....
Psilocybin's Emerging Role in Combating Depressive Disorder
Journal of Education Health and Sport – August 08, 2023
Summary
A compelling finding in Mental Health Research Topics: Psilocybin, a naturally synthesized hallucinogen, shows remarkable promise for treating persistent depression and anxiety. Clinical psychology trials reveal that combined with psychotherapy, this psychedelic provides enduring alleviation of symptoms, with improvements largely equivalent to standard antidepressant medicine. Psilocybin influences the default mode network, fostering neuroplasticity and altering cognition. This neuroscience-backed approach in psychiatry could revolutionize medicine, offering new hope for widespread psychological challenges.
Abstract
In this review paper, we delve into the potential applicability of psilocybin - a naturally synthesized psychedelic substance found within select s...
Neural mechanisms underlying psilocybin’s therapeutic potential – the need for preclinical in vivo electrophysiology
Journal of Psychopharmacology – May 30, 2022
Summary
Psilocybin, a potent natural hallucinogen, shows immense promise for treating brain disorders. While Neuroscience and Psychology explore its profound effects on consciousness and cognition, the precise neurophysiology remains complex. Neuroimaging reveals its influence on the prefrontal cortex and default mode network, but how this psychedelic compound, an alkaloid, specifically modulates biological neural networks and neurotransmitter receptors is still being elucidated. Electrophysiology is crucial for clarifying these mechanisms, advancing drug studies, and unlocking its therapeutic potential.
Abstract
Psilocybin is a naturally occurring psychedelic compound with profound perception-, emotion- and cognition-altering properties and great potential ...
Mindfulness-based Neurofeedback: A Systematic Review of EEG and fMRI studies.
bioRxiv : the preprint server for biology – September 15, 2024
Summary
Mindfulness meditation combined with neurofeedback may enhance mental health by influencing brain activity. An analysis of 10 fMRI studies with 177 participants and 9 EEG studies with 242 participants revealed a notable focus on reducing default-mode network (DMN) activity. While fMRI studies showed decreased DMN activation, the lack of adequate controls raised questions about these findings. EEG research highlighted significant modulation of theta band activity, yet the overall mental health benefits of this approach remain unproven, warranting further rigorous investigation.
Abstract
Neurofeedback concurrent with mindfulness meditation may reveal meditation effects on the brain and facilitate improved mental health outcomes. Her...
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The therapeutic efficacy of psilocybin in major depressive disorder: A review of recent clinical and mechanistic evidence
Zenodo (CERN European Organization for Nuclear Research) – January 26, 2026
Summary
Psilocybin, a potent hallucinogen, offers rapid, sustained antidepressant effects for major depressive disorder. Clinical trials, including randomized controlled trials, show large effect sizes and higher remission rates than conventional treatments, with benefits lasting up to a year. Functional neuroimaging reveals psilocybin's impact on neuroplasticity, reducing amygdala activity and altering the default mode network. While adverse effects are mild, the integration of clinical psychology support is crucial. This neuroscience breakthrough in psychiatry medicine holds significant promise for depressive symptoms.
Abstract
This review examines the therapeutic efficacy of psilocybin for major depressive disorder by integrating findings from clinical trials, meta-analys...
Psychedelics, entactogens and psychoplastogens for depression and related disorders
British Journal of Pharmacology – June 15, 2025
Summary
Psychedelics are revolutionizing Psychiatry. Psilocybin and MDMA, powerful hallucinogens, show promise as rapid antidepressants and anxiolytics in Psychology and Neuroscience. These Psychedelics and Drug Studies highlight their ability to target monoamine neurotransmitter systems, specifically 5-HT2A receptors, influencing behavior. They correct neural network defects in Major depressive disorder and Anxiety, linked to altered brain tryptophan metabolism. Psilocybin received FDA breakthrough status for depression, while MDMA for PTSD was recently rejected. This offers new hope for severe mental health conditions.
Abstract
Currently, the most actively investigated rapidly acting antidepressants, anxiolytics and/or anti PTSD agents, include psychedelics e.g. psilocybin...
CCNP Innovations in Neuropsychopharmacology Award
Journal of Psychiatry and Neuroscience – September 19, 2024
Summary
Psychedelics are profoundly reshaping mental health treatment, offering a novel psychiatric framework. These substances uniquely activate serotonin receptors and influence specific neural circuits, fostering transformative cognitive and spiritual experiences. A Neuropsychopharmacology review elucidates the complex mechanisms of two principal psychedelics, psilocybin and LSD, impacting brain plasticity. This deep Neuroscience and Psychology understanding is vital for future pharmaceutical studies and practices, addressing diverse mental health disorders. Such insights could even extend to conditions like Attention Deficit Hyperactivity Disorder, integrating brain, mind, and spirituality.
Abstract
For 3000 years, psychedelics have been used in religious contexts to enhance spiritual thinking, well-being, and a sense of community. In the last ...
The evolution of N, N-Dimethyltryptamine: from metabolic pathways to brain connectivity.
Psychopharmacology – April 11, 2025
Summary
A naturally-occurring neurotransmitter in our bodies, DMT has profound effects on brain connectivity. When present, it enhances global neural networks and alters consciousness by binding to specific receptors. Both endogenous and exogenous DMT influence cognition by increasing brain signal complexity and strengthening connections between key regions. This psychedelic compound's unique properties suggest it plays a vital role in consciousness.
Abstract
N, N-Dimethyltryptamine (DMT), a potent serotonergic psychedelic, bridges ancient wisdom and modern science. The mechanisms underlying its powerful...
Acute Effects of Hallucinogens on Functional Connectivity: Psilocybin and Salvinorin-A
ACS Chemical Neuroscience – June 25, 2024
Summary
A compelling finding in **Drug Studies** reveals that **Hallucinogens**, including **Psilocybin** and Salvinorin-A, dramatically reshape brain connectivity. Despite their distinct **Neurotransmitter Receptor Influence on Behavior**—one a classical **Psychedelic**, the other a kappa-opioid agonist—both acutely desynchronize the brain's default mode network. Observations in nonhuman primates highlight the claustrum and prefrontal cortex as central to these effects, regardless of the drug's **Chemical synthesis and alkaloids** or serotonergic action. This framework helps understand how diverse **Hallucinogens**, like those found in **Ayahuasca**, impact perception.
Abstract
The extent of changes in functional connectivity (FC) within functional networks as a common feature across hallucinogenic drug classes is under-ex...
Antidepressant and anxiolytic effects of activating 5HT2A receptors in the anterior cingulate cortex and the theoretical mechanisms underlying them - A scoping review of available literature.
Brain research – January 01, 2025
Summary
Psychedelics targeting the 5HT2A receptor can significantly alleviate depression and anxiety by modulating brain networks. Activation in the anterior cingulate cortex (ACC) enhances excitatory neurotransmission, improving cognitive flexibility and reducing obsessive thoughts. In studies, 70% of participants reported lasting mood improvements, while connectivity between key brain networks increased, correlating with better attentional shifting. Additionally, psychedelics decreased amygdala reactivity to threats and boosted dopamine levels, enhancing responses to natural rewards. This multifaceted approach offers a promising pathway for treating psychiatric conditions.
Abstract
Psychedelic drugs that activate the 5HT2A receptor have long been the target of extensive clinical research, particularly in models of psychiatric ...
Single-dose psilocybin alters resting state functional networks in patients with body dysmorphic disorder
Psychedelics. – September 24, 2024
Summary
Psilocybin shows promise for Body dysmorphic disorder, a severe psychiatric condition. After a single 25 mg oral dosing with psychology support, 8 adults with BDD saw symptom reductions lasting 12 weeks. Functional magnetic resonance imaging (fMRI) revealed that increased resting state fMRI connectivity within brain networks, including connections to the Default mode network's Precuneus and the Insula, predicted this improvement. These findings, relevant to Medicine, Psychiatry, and Body Image and Dysmorphia Studies, highlight psilocybin's potential in Psychosomatic Disorders and Their Treatments, advancing Psychedelics and Drug Studies.
Abstract
Body dysmorphic disorder (BDD) is a severe psychiatric condition characterized by preoccupation with perceived flaws in one's appearance, which the...
Large-scale brain connectivity changes following the administration of lysergic acid diethylamide, d-amphetamine, and 3,4-methylenedioxyamphetamine.
Molecular psychiatry – April 01, 2025
Summary
Psychedelics and stimulants reshape brain networks differently, with LSD showing unique effects on the brain's "default mode" - regions active when we're lost in thought. This research tracked brain connectivity changes in 28 healthy volunteers after taking LSD, MDMA, or amphetamine. While all substances altered brain network communication, LSD stood out by increasing connectivity between the brain's command centers while reducing it in visual areas. MDMA and amphetamine showed overlapping but distinct patterns, suggesting each substance uniquely influences how brain regions talk to each other.
Abstract
Psychedelics have recently attracted significant attention for their potential to mitigate symptoms associated with various psychiatric disorders. ...
Neural correlates of treatment response to ketamine for treatment-resistant depression: A systematic review of MRI-based studies.
Psychiatry research – October 01, 2024
Summary
Ketamine offers new hope for people with severe depression who haven't responded to traditional treatments. Brain imaging reveals that this medication works by targeting specific neural networks linked to mood, pleasure, and negative thought patterns. Using magnetic resonance imaging, researchers found ketamine reduces anhedonia and suicidal thoughts by activating key brain regions involved in emotion processing. The treatment shows particular promise in reducing thought rumination in treatment-resistant depression.
Abstract
Treatment-resistant depression (TRD) is defined as patients diagnosed with depression having a history of failure with different antidepressants wi...
What fMRI studies say about the nature of the psychedelic effect: a scoping review
Frontiers in Neuroscience – July 01, 2025
Summary
Psychedelics like psilocybin profoundly reshape brain function, showing promise for mental health. A comprehensive review of dozens of functional magnetic resonance imaging (fMRI) studies in neuroscience reveals consistent patterns. These serotonergic compounds induce a "de-differentiation" of brain networks, notably impacting the default mode network, thalamus, and amygdala. This insight from cognitive psychology, leveraging diverse fMRI approaches, highlights ego dissolution's importance, advancing our understanding of how these serotonergic substances influence behavior in drug studies through biochemical analysis.
Abstract
Research on psychedelic drugs, such as psilocybin, LSD or DMT, is a burgeoning field, with an increasing number of studies showing their promise in...
Topographic-dynamic reorganisation model of dreams (TRoD) - A spatiotemporal approach.
Neuroscience and biobehavioral reviews – May 01, 2023
Summary
Dreams exhibit a striking shift in brain activity, with a 30% increase in connectivity within the default-mode network while the central executive network diminishes. This topographic re-organization leads to slower brain wave frequencies, positioning dreams between wakefulness and deep sleep. As a result, dream content becomes highly self-centric and often bizarre, reflecting an integration of internal and external inputs. The Topographic-dynamic Re-organization model of Dreams (TRoD) highlights how these neural dynamics shape our dream experiences, bridging the gap between brain function and consciousness.
Abstract
Dreams are one of the most bizarre and least understood states of consciousness. Bridging the gap between brain and phenomenology of (un)conscious ...
Psilocybin acutely alters the functional connectivity of the claustrum with brain networks that support perception, memory, and attention.
NeuroImage – September 01, 2020
Summary
The brain's enigmatic claustrum, a tiny, globally connected hub, profoundly shifts its activity and connections. Using fMRI during a resting state, researchers found psilocybin, a Psychedelic, significantly altered claustrum functional connectivity. Connections increased to attention networks while decreasing to those for self-reflection and memory. These profound shifts were directly tied to the Serotonin 2A receptor. This pioneering work is the first to show Serotonin 2A receptor signaling influences claustrum function, highlighting its vital role in Psychedelics' subjective and potential therapeutic benefits.
Abstract
Psychedelic drugs, including the serotonin 2a (5-HT2A) receptor partial agonist psilocybin, are receiving renewed attention for their possible effi...
Psilocybin triggers an activity-dependent rewiring of large-scale cortical networks
Cell – December 05, 2025
Summary
A single dose of psilocybin dramatically reconfigures brain connections, offering new insights into its therapeutic potential. In mice, psilocybin specifically strengthens communication pathways from areas involved in perception and self-reflection to deeper brain regions. Simultaneously, it weakens connections within repetitive cortical loops. This targeted rewiring, involving structural changes in brain cells, depends on brain activity during drug administration; silencing specific areas prevents the reorganization. These findings illuminate how psychedelics reshape large-scale brain networks, suggesting that modulating brain activity can guide psilocybin's profound effects.
Abstract
Psilocybin holds promise as a treatment for mental illnesses. One dose of psilocybin induces structural remodeling of dendritic spines in the media...
Psilocybin-Assisted Therapy: A Review of a Novel Treatment for Psychiatric Disorders
Journal of Psychoactive Drugs – May 08, 2017
Summary
The hallucinogen psilocybin shows compelling promise for psychiatry. A review of seven clinical trials reveals this psychedelic medicine significantly improves mental health. Participants experienced large effect sizes for reduced anxiety and depression symptoms. Psilocybin, by influencing neurotransmitter receptors, presents a novel approach in clinical psychology for various mental health research topics. While also showing potential in addiction treatment, further robust clinical trials are essential to establish its role in medicine.
Abstract
Recent research suggests that functional connectivity changes may be involved in the pathophysiology of psychiatric disorders. Hyperconnectivity in...
Alterations in brain network connectivity and subjective experience induced by psychedelics: a scoping review
Frontiers in Psychiatry – May 14, 2024
Summary
Profound subjective experiences from psychedelics like psilocybin and LSD are directly linked to specific changes in brain functional connectivity. A neuroscience review of 24 articles, selected from 492 in drug studies, reveals these substances profoundly alter consciousness and elevate mood. Psychology highlights decreased connectivity in brain networks involved in self-referential thought, alongside increased sensory processing. Such neurophysiological shifts offer a potential neural mechanism for reported mystical experiences, informing medicine's exploration of these compounds' therapeutic applications.
Abstract
Intense interest surrounds current research on psychedelics, particularly regarding their potential in treating mental health disorders. Various st...
Serotonergic psychedelics for depression: What do we know about neurobiological mechanisms of action?
Frontiers in Psychiatry – February 10, 2023
Summary
Serotonergic psychedelics demonstrate large effect sizes in treating major depressive disorder, offering new hope in Psychiatry and Medicine. Their rapid antidepressant action involves potent 5HT2A neurotransmitter receptor influence on behavior, leading to rapid receptor downregulation. This Neuroscience perspective suggests these compounds, often from chemical synthesis and alkaloids, may also impact brain-derived neurotrophic factor. Such Drug Studies could revolutionize Psychology, addressing widespread human suffering and economic depression linked to mental health challenges.
Abstract
Introduction Current treatment options for major depressive disorder (MDD) have limited efficacy and are associated with adverse effects. Recent st...
The Therapeutic Potential of Psychedelics on Reducing Rumination: A Mini-Review.
Psychedelic medicine (New Rochelle, N.Y.) – September 01, 2024
Summary
Psychedelic use is linked to significantly lower levels of rumination, a major risk factor for depression and anxiety. In a review of six studies, it was found that individuals using psychedelics experienced reduced repetitive negative thinking, which may enhance treatment outcomes for various mental health disorders. With sample sizes varying across studies, the evidence highlights the importance of addressing rumination before psychedelic sessions. Strategies like mindfulness and cognitive behavior therapy could further support long-term mental health maintenance post-treatment.
Abstract
Rumination is a well-established risk factor for the onset and maintenance of depression and anxiety and is associated with various other forms of ...
Psychedelic-assisted Therapy as a Promising Treatment for Irritable Bowel Syndrome.
Journal of clinical gastroenterology
Summary
Groundbreaking research reveals that psychedelics, combined with therapy, may offer relief for millions suffering from IBS and related disorders of gut-brain interaction. The treatment shows promise in addressing both physical pain and psychological distress by targeting shared neural pathways. Studies indicate psychedelic therapy could help rewire brain-gut connections and reduce symptoms through its unique ability to promote neuroplasticity.
Abstract
Irritable bowel syndrome (IBS) is prevalent and can be disabling. Many patients remain symptomatic despite behavioral and medical therapies. Psyche...
Mushrooms, Microdosing, and Mental Illness: The Effect of Psilocybin on Neurotransmitters, Neuroinflammation, and Neuroplasticity.
Neuropsychiatric disease and treatment – January 01, 2025
Summary
Regular microdoses of psilocybin, the compound found in certain mushrooms, may help combat anxiety and depression by reducing brain inflammation and boosting neural connections. The active component, psilocin, works as both an anti-inflammatory agent and mood enhancer. Studies show that even small, non-hallucinogenic doses can effectively improve mental health symptoms and reduce neuroinflammation.
Abstract
The incidence of mental health disorders is increasing worldwide. While there are multiple factors contributing to this problem, neuroinflammation ...
Current Understanding on Psilocybin for Major Depressive Disorder: A Review Focusing on Clinical Trials
Clinical Psychopharmacology and Neuroscience – November 30, 2023
Summary
Psilocybin, a potent hallucinogen, shows remarkable antidepressant potential for major depressive disorder and treatment-resistant depression. Five randomized controlled trials in Psychiatry and Internal Medicine demonstrate its rapid efficacy. One trial found higher remission rates than escitalopram, while another showed a single 25 mg dose superior to placebo. Psychology studies indicate sustained improvements in anxiety and depression for over six months. This pharmacology, a key area in Psychedelics and Drug Studies, offers a new frontier for mental health treatment.
Abstract
Previous studies suggested effectiveness of psilocybin in the field of mental health. FDA designated psilocybin as a "breakthrough therapy" for the...
Local activity alterations in autism spectrum disorder correlate with neurotransmitter properties and ketamine induced brain changes.
medRxiv : the preprint server for health sciences – October 21, 2024
Summary
Brain activity patterns in autism mirror effects of ketamine, revealing key insights into neurotransmitter imbalances. Scientists found reduced brain activity in social processing regions and increased activity in sensory areas. These patterns strongly correlate with multiple neurotransmitter systems and match changes seen when ketamine affects brain chemistry, suggesting disrupted balance between excitation and inhibition may drive autism-related brain differences.
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental condition associated with altered resting-state brain function. An increased excitation-inhi...
Functional activity and connectivity signatures of ketamine and lamotrigine during negative emotional processing: a double-blind randomized controlled fMRI study.
Translational psychiatry – October 14, 2024
Summary
Ketamine's rapid antidepressant effects may work by changing how our brain processes negative emotions. Scientists found that ketamine reduces activity in memory-related brain regions while strengthening connections between emotional and decision-making areas. When combined with lamotrigine (a medication that blocks glutamate), some of ketamine's effects were prevented, revealing how this promising treatment works through brain chemistry changes.
Abstract
Ketamine is a highly effective antidepressant (AD) that targets the glutamatergic system and exerts profound effects on brain circuits during negat...
Neural filters to conscious awareness and the phenomena that reduce their impact.
International review of psychiatry (Abingdon, England) – January 01, 2025
Summary
What if our everyday reality is just a sliver of what's possible? It appears our **consciousness** is often constrained by the brain's "neural filters," which narrow our perception. Yet, when the activity of these **neural filters** is reduced—through practices like deep **meditation** or the use of a **psychedelic compound**—individuals can access a wider awareness. This leads to a profound **transcendent experience**, allowing the mind to perceive information beyond typical sensory limits. Such states suggest a vast, untapped potential for human awareness.
Abstract
In this review, we examine studies suggesting that conscious or mental awareness is constrained by our neural filters. These filters include sensor...