Hallucinations and Strong Priors

Corlett, P. R., Horga, G., Fletcher, P. C., Alderson-Day, B., Schmack, K., Powers, A. R. (December 2018) Hallucinations and Strong Priors. Trends in Cognitive Sciences, 23 (2). pp. 114-127. ISSN 13646613

URL: https://www.ncbi.nlm.nih.gov/pubmed/30583945
DOI: 10.1016/j.tics.2018.12.001

Abstract

Hallucinations, perceptions in the absence of objectively identifiable stimuli, illustrate the constructive nature of perception. Here, we highlight the role of prior beliefs as a critical elicitor of hallucinations. Recent empirical work from independent laboratories shows strong, overly precise priors can engender hallucinations in healthy subjects and that individuals who hallucinate in the real world are more susceptible to these laboratory phenomena. We consider these observations in light of work demonstrating apparently weak, or imprecise, priors in psychosis. Appreciating the interactions within and between hierarchies of inference can reconcile this apparent disconnect. Data from neural networks, human behavior, and neuroimaging support this contention. This work underlines the continuum from normal to aberrant perception, encouraging a more empathic approach to clinical hallucinations.

Item Type: Paper
Subjects: organs, tissues, organelles, cell types and functions > organs types and functions > brain
organism description > animal behavior > perception
CSHL Authors:
Communities: CSHL labs > Kepecs lab
Depositing User: Matthew Dunn
Date: December 2018
Date Deposited: 07 Jan 2019 16:03
Last Modified: 08 Feb 2019 21:09
Related URLs:
URI: http://repository.cshl.edu/id/eprint/37532

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