Visual discomfort from flash afterimages of riloid patterns

O'Hare, L ORCID: https://orcid.org/0000-0003-0331-3646, 2017. Visual discomfort from flash afterimages of riloid patterns. Perception, 46 (6), pp. 709-727. ISSN 0301-0066

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Abstract

Op-art-based stimuli have been shown to be uncomfortable, possibly due to a combination of fixational eye movements (microsaccades) and excessive cortical responses. Efforts have been made to measure illusory phenomena arising from these stimuli in the absence of microsaccades, but there has been no attempt thus far to decouple the effects of the cortical response from the effect of fixational eye movements. This study uses flash afterimages to stabilise the image on the retina and thus reduce the systematic effect of eye movements, in order to investigate the role of the brain in discomfort from op-art-based stimuli. There was a relationship between spatial frequency and the magnitude of the P300 response, showing a similar pattern to that of discomfort judgements, which suggests that there might be a role of discomfort and excessive neural responses independently from the effects of microsaccades.

Item Type:	Journal article
Publication Title:	Perception
Creators:	O'Hare, L.
Publisher:	Sage
Date:	1 June 2017
Volume:	46
Number:	6
ISSN:	0301-0066
Identifiers:	Number Type 10.1177/0301006616683202 DOI 1372326 Other
Divisions:	Schools > School of Social Sciences
Record created by:	Linda Sullivan
Date Added:	06 Oct 2020 11:10
Last Modified:	31 May 2021 15:13
URI:	https://irep.ntu.ac.uk/id/eprint/41173

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