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Parsa Yousefi

3 papers in the library · 7 citations · publishing 2025-2026

Papers

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Acute and post-acute neurobehavioral responses to lysergic acid diethylamide in healthy subjects: a randomized controlled study

Neuropsychopharmacology June 18, 2026 Abigail E. Calder, Vincent J Diehl, Morten P. Lietz et al.

Preclinical studies suggest that lysergic acid diethylamide (LSD) may induce lasting changes in brain function and learning ability, but evidence in humans is uncertain. Motor learning, in particular, has clinical relevance but has not been investigated in human studies of psychedelics. Forty-five healthy subjects (24 women) participated in this randomized crossover trial comparing 100 µg LSD...

DOI: 10.1038/s41386-026-02454-7 (opens in new tab) Full text (opens in new tab) Lysergic acid diethylamide Transcranial magnetic stimulation Electroencephalography Crossover study +11

Acute effects of psilocybin on attention and executive functioning in healthy volunteers: a systematic review and multilevel meta-analysis.

Psychopharmacology June 1, 2025 Parsa Yousefi, Morten P. Lietz, Fiachra O'Higgins et al. 7 citations

Psilocybin shows promise for treating neuropsychiatric disorders. However, insight into its acute effects on cognition is lacking. Given the significant role of executive functions in daily life and treatment efficacy, it is crucial to evaluate how psilocybin influences these cognitive domains. This meta-analysis aims to quantify the acute effects of psilocybin on executive functions and...

DOI: 10.1007/s00213-024-06742-2 (opens in new tab) Full text (opens in new tab) Psilocybin effects Psychedelic research Mental processing Accuracy +8

Psychedelics Restructure the Global Workspace of Consciousness

Parsa Yousefi, Kenneth Shinozuka, Patrick Vizeli et al.

Psychoactive drugs profoundly alter consciousness, but the neural mechanisms by which they do so remain poorly understood. Global workspace theory may provide a framework for investigating these mechanisms. The global workspace, a candidate neural substrate of consciousness, is a set of brain regions that integrate and disseminate information to the rest of the brain. According to a recent...