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Peter T Morgan

6 papers in the library · 290 citations · publishing 2011-2026

Papers

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Sleep alterations in substance use disorders: a systematic review and meta-analysis.

EClinicalMedicine 2026 Henrique Nunes Pereira Oliva, Tiago Paiva Prudente, Alisson M Paredes Naveda et al. 5 citations

Sleep disturbances are common in individuals with substance use disorders (SUDs), often persisting beyond initial abstinence and hindering recovery. However, the underlying sleep abnormalities warrant further investigation, particularly given mixed findings regarding specific substances. This systematic review and meta-analysis aimed to identify sleep-related abnormalities associated with...

Ketamine Alters Tuning of Neural and Behavioral Spatial Working Memory Precision

bioRxiv Preprint Server February 10, 2025 Masih Rahmati, Flora Moujaes, Nina Purg Suljič et al. 1 citation preprint

Deficits in working memory (WM) are a hallmark of neuropsy-chiatric disorders such as schizophrenia, yet their neurobiological basis remains poorly understood. Glutamate N-methyl-D-aspartate receptors (NMDARs) are critical for spatial WM (sWM), with NMDAR antagonist ketamine known to attenuate task-evoked activation and reduce sWM accuracy. Cortical microcircuit models hypothesize that NMDAR...

Ketamine induces multiple individually distinct whole-brain functional connectivity signatures.

Elife April 17, 2024 Flora Moujaes, Jie Lisa Ji, Masih Rahmati et al. 23 citations

Ketamine has emerged as one of the most promising therapies for treatment-resistant depression. However, inter-individual variability in response to ketamine is still not well understood and it is unclear how ketamine's molecular mechanisms connect to its neural and behavioral effects. We conducted a single-blind placebo-controlled study, with participants blinded to their treatment condition....

A Robust and Reproducible Connectome Fingerprint of Ketamine is Highly Associated with the Connectomic Signature of Antidepressants

medRxiv Preprint Server April 10, 2020 Chadi G. Abdallah, Kyung-Heup Ahn, Lynnette A. Averill et al. 1 citation preprint

Over the past decade, various N-Methyl-D-Aspartate modulators have failed in clinical trials, underscoring the challenges of developing novel rapid-acting antidepressants based solely on the receptor or regional targets of ketamine. Thus, identifying the effect of ketamine on the brain circuitry and networks is becoming increasingly critical. In this longitudinal functional magnetic resonance...

NMDA receptor function in large-scale anticorrelated neural systems with implications for cognition and schizophrenia

Proceedings of the National Academy of Sciences September 25, 2012 Alan Anticevic, Mark G. Gancsos, John D. Murray et al. 260 citations

Glutamatergic neurotransmission mediated by N-methyl-d-aspartate (NMDA) receptors is vital for the cortical computations underlying cognition and might be disrupted in severe neuropsychiatric illnesses such as schizophrenia. Studies on this topic have been limited to processes in local circuits; however, cognition involves large-scale brain systems with multiple interacting regions. A prominent...

Lucid dreaming and ventromedial versus dorsolateral prefrontal task performance.

Consciousness and Cognition June 1, 2011 Michelle Neider, Edward F Pace-Schott, Erica Forselius et al.

Activity in the prefrontal cortex may distinguish the meta-awareness experienced during lucid dreams from its absence in normal dreams. To examine a possible relationship between dream lucidity and prefrontal task performance, we carried out a prospective study in 28 high school students. Participants performed the Wisconsin Card Sort and Iowa Gambling tasks, then for 1 week kept dream journals...