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Albert R. Powers

5 papers in the library · 79 citations · publishing 2018-2026

Papers

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Persisting perceptual abnormalities in psychedelic users are associated with conditioned hallucinations and impaired sensory processing

bioRxiv (Cold Spring Harbor Laboratory) August 16, 2026 Maximillian Greenwald, Peter Thestrup Waade, Eren Kafadar et al. preprint

Abstract Serotonergic psychedelics (SP) are increasingly used in clinical research and naturalistic settings, but their psychotic-like side effects, including persisting perceptual abnormalities (PPAs), are poorly understood. Psychosis-associated hallucinations are associated with susceptibility to conditioned hallucinations and computationally-estimated overweighting of perceptual...

Compensatory hallucinogenesis across three neuropsychiatric disorders: a Bayesian account.

Brain Communications 2026 Raina Vin, Jordan Galbraith, Rashina Seabury et al.

Emerging evidence suggests that hallucinations may arise because of an over-reliance on prior knowledge during perception. While best established in psychosis-spectrum illness, data also support the presence of this abnormality in other hallucination-prone neuropsychiatric illnesses that vary in their association with disruption of sensory circuits. In this piece, we ask whether an...

Learning to Discern the Voices of Gods, Spirits, Tulpas, and the Dead.

Schizophr Bull February 1, 2023 Tanya M Luhrmann, Ben Alderson-Day, Ann Chen et al.

AbstractThere are communities in which hearing voices frequently is common and expected, and in which participants are not expected to have a need for care. This paper compares the ideas and practices of these communities. We observe that these communities utilize cultural models to identify and to explain voice-like events—and that there are some common features to these models across...

Clinical phenomenology of the prodrome for psychosis

Oxford University Press eBooks November 1, 2020 Albert R. Powers, T. Mcglashan, S. Woods 5 citations

More than 100 years of retrospective studies show that psychosis is usually preceded by a prodrome. Nonspecific symptoms such as anxiety and depression precede more specific negative and attenuated positive symptoms. Prospective diagnostic criteria have been developed based on the retrospective work. The prospective criteria have shown high reliability in the research context, and follow-up...

Beyond Trauma: A Multiple Pathways Approach to Auditory Hallucinations in Clinical and Nonclinical Populations

Schizophrenia Bulletin August 8, 2018 Tanya M Luhrmann, Ben Alderson-Day, Vaughan Bell et al. 74 citations

That trauma can play a significant role in the onset and maintenance of voice-hearing is one of the most striking and important developments in the recent study of psychosis. Yet the finding that trauma increases the risk for hallucination and for psychosis is quite different from the claim that trauma is necessary for either to occur. Trauma is often but not always associated with...