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  • Review Article   
  • Psychol Psychiatry 2022, Vol 7(1): 135
  • DOI: 10.4172/ppo.1000135

Visual Hallucinations are Psychotic Symptom Present in Numerous Clinical Conditions

Gabriel Kenny*
Department of Psychology Division, Politecnico di Milano, Italy
*Corresponding Author : Gabriel Kenny, Department of Psychology Division, Politecnico di Milano, Italy, Email: gabriel.kenny@gmail.com

Received Date: Feb 01, 2023 / Published Date: Feb 28, 2023

Abstract

Visual hallucinations (VH) are a common symptom in multiple clinical and non-clinical populations. Although structural and functional neuroimaging has informed the understanding of VH, temporal resolution is limited. Electrophysiological techniques provide a complementary perspective on dynamic and temporal aspects of neural functioning, offering greater insight into the mechanisms underlying their formation. In this review we examine and critically evaluate the emerging evidence base utilising electrophysiological approaches in the study of VH. Overall, increased visual system excitability, dysfunctional visual processing and network connectivity, and cholinergic dysfunction have been consistently observed in VH-prone pathologies. However, a major limitation is in the lack of robust experimental studies and the reliance on single case reports.

Citation: Kenny G (2023) Visual Hallucinations are Psychotic Symptom Present inNumerous Clinical Conditions. Psychol Psychiatry 7: 135. Doi: 10.4172/ppo.1000135

Copyright: © 2023 Kenny G. This is an open-access article distributed under theterms of the Creative Commons Attribution License, which permits unrestricteduse, distribution, and reproduction in any medium, provided the original author andsource are credited.

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