Diego Mateos

Consejo Nacional Investigaciones Científicas y Técnicas (CONICET), Argentina; Universidad Autónoma de Entre Ríos (FCyT-UADER), Entre Ríos, Argentina; Instituto de Matemática Aplicada del Litoral (IMAL-CONICET-UNL), Santa Fe, Argentina; Achucarro Basque Centre for Neuroscience, Spain.

2 papers in the library · 4 citations · publishing 2025-2026

Papers

Cortical high-frequency oscillations (≈ 110 Hz) in cats are state-dependent and enhanced by a subanesthetic dose of ketamine.

Behavioural brain research January 5, 2025 Santiago Castro-Zaballa, Joaquín González, Matías Cavelli et al. 4 citations

In cats, high-frequency oscillations (HFO, >100 Hz) in the brain's electrical activity are linked to breathing during wakefulness but not during sleep. A sub-anesthetic dose of ketamine increases the power of these HFO, and they remain tied to the inhalation phase of respiration. The enhanced HFO appear to originate in the olfactory bulb and travel to the prefrontal cortex. Blocking the nostrils reduces the ketamine-enhanced HFO in both regions. Auditory stimulation does not affect these oscillations. The findings suggest that ketamine's enhancement of respiration-coupled HFO may disrupt cortical information processing, potentially contributing to its neuropsychiatric effects.

DOI: 10.1016/j.bbr.2024.115231 Full text Anesthesia Cognition Gamma Hfo +10

The Neurophenomenology of a Self-Induced Transcendental Visionary State: A Case Study.

NeuroImage February 4, 2026 Gabriel Della Bella, Agustina Velez Picatto, Dante Sebastián Galván Rial et al.

A participant who can reliably enter a self-induced non-ordinary state of consciousness (NOC) characterized by vivid imagery, altered bodily perception, and a sense of unity underwent 20 fMRI sessions. Compared to a control group, during the transition into the NOC state, functional connectivity became more variable, indicating temporary destabilization of network organization. In the NOC state, connectivity between brain networks broadly decreased, especially visual cortex coupling with auditory, sensorimotor, and other regions, while frontoparietal and salience networks increased coupling with precuneus and temporal areas, matching reports of inward attention and absorption. Entropy and complexity measures tracked the experience and returned to baseline afterward.

DOI: 10.1016/j.neuroimage.2026.121784 Full text N/a