Effect of visual cues on the resolution of perceptual ambiguity in Parkinson's disease and normal aging

Journal of the International Neuropsychological Society : JINS
Mirella Díaz-SantosAlice Cronin-Golomb

Abstract

Parkinson's disease (PD) and normal aging have been associated with changes in visual perception, including reliance on external cues to guide behavior. This raises the question of the extent to which these groups use visual cues when disambiguating information. Twenty-seven individuals with PD, 23 normal control adults (NC), and 20 younger adults (YA) were presented a Necker cube in which one face was highlighted by thickening the lines defining the face. The hypothesis was that the visual cues would help PD and NC to exert better control over bistable perception. There were three conditions, including passive viewing and two volitional-control conditions (hold one percept in front; and switch: speed up the alternation between the two). In the Hold condition, the cue was either consistent or inconsistent with task instructions. Mean dominance durations (time spent on each percept) under passive viewing were comparable in PD and NC, and shorter in YA. PD and YA increased dominance durations in the Hold cue-consistent condition relative to NC, meaning that appropriate cues helped PD but not NC hold one perceptual interpretation. By contrast, in the Switch condition, NC and YA decreased dominance durations relative to PD, meaning...Continue Reading

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Citations

Mar 25, 2016·Brain Sciences·Khushi Patel, Maureen Reed
Apr 27, 2016·Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition·Mirella Díaz-SantosAlice Cronin-Golomb
Apr 22, 2020·Journal of Vision·Pantelis LeptourgosSophie Denève
Aug 30, 2018·PeerJ·Chia-Chien WuArash Yazdanbakhsh

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