Flickering Stimuli Do Not Reliably Induce Visual Hallucinations in Parkinson's Disease.

Zarkali, Angeliki, Lees, Andrew J ORCID: 0000-0002-2476-4385 and Weil, Rimona S (2019) Flickering Stimuli Do Not Reliably Induce Visual Hallucinations in Parkinson's Disease. Journal of Parkinson's disease, 9 (3). pp. 631-635.

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Official URL: http://dx.doi.org/10.3233/jpd-191635

Abstract

Visual hallucinations are a common and often distressing feature of Parkinson's disease; they are ephemeral and capricious, making them difficult to study but tend to be more prominent in dim illumination. Flickering stimuli can induce simple hallucinations even in healthy individuals. We tested a stroboscope and an equivalent full-screen flickering stimulus in 16 participants: 7 patients with Parkinson's and habitual visual hallucinations, 6 Parkinson's patients without hallucinations and 3 controls. Both flicker sources induced varied geometrical hallucinations in 4 participants (25%) and complex hallucinations in 1 but neither induced typical Parkinson's-associated hallucinations.

Item Type:	Article
Uncontrolled Keywords:	Humans, Parkinson Disease, Hallucinations, Visual Perception, Aged, Aged, 80 and over, Middle Aged
Depositing User:	Symplectic Admin
Date Deposited:	01 Aug 2019 09:12
Last Modified:	17 Mar 2024 04:23
DOI:	10.3233/jpd-191635
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3050749