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Owen O'Daly

Department of Neuroimaging, King's College London, London, United Kingdom.

2 papers in the library · 7 citations · publishing 2024-2026

Papers

Does practice make perfect? Functional connectivity of the salience network and somatosensory network predicts response to mind-body treatments for fibromyalgia.

Frontiers in pain research (Lausanne, Switzerland) January 1, 2024 Sonia Medina, Owen O'Daly, Matthew A Howard et al. 5 citations

Mind-body treatments such as mindfulness-based stress reduction (MBSR) and a psychoeducational program (FibroQoL) reduced pain catastrophizing in patients with fibromyalgia syndrome (FMS). Using resting-state fMRI, the study found that MBSR specifically reduced functional connectivity within the sensorimotor network compared to a treatment-as-usual group. Baseline connectivity between the salience network and sensorimotor network predicted pain reduction differently for each treatment: negatively for MBSR and positively for FibroQoL, with large to very large effect sizes. Among MBSR patients with lower baseline connectivity, more mindfulness practice was linked to greater clinical improvement. These results suggest that different mind-body treatments engage distinct brain networks and that functional connectivity measures could serve as predictors of treatment response.

Regional Blood Flow Signatures of Opioidergic Modulation of Ketamine in Major Depressive Disorder: A Randomized Crossover Study.

The American journal of psychiatry June 1, 2026 Luke A Jelen, Owen O'Daly, Fernando O Zelaya et al. 2 citations

Ketamine increased blood flow in specific brain regions (subgenual, pregenual, and dorsal anterior cingulate cortices) in adults with major depressive disorder, and this effect was not blocked by the opioid blocker naltrexone. However, naltrexone did disrupt the relationships between blood flow changes and both acute subjective effects and antidepressant response. The blood flow changes aligned with patterns of opioid and glutamate receptor distribution, suggesting that ketamine's effects involve interactions among multiple neurotransmitter systems.