VEP responses to op-art stimuli

O'Hare, Louise and Clarke, Alasdair and Pollux, Petra (2015) VEP responses to op-art stimuli. PLoS ONE . ISSN 1932-6203

Full content URL: http://dx.doi.org/10.1371/journal.pone.0139400

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VEP responses to op-art stimuli
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Abstract

Several types of striped patterns have been reported to cause adverse sensations
described as visual discomfort. Previous research using op-art-based stimuli has
demonstrated that spurious eye movement signals can cause the experience of illusory
motion, or shimmering effects, which might be perceived as uncomfortable. Whilst the
shimmering effects are one cause of discomfort, another possible contributor to
discomfort is excessive neural responses: As striped patterns do not have the statistical
redundancy typical of natural images, they are perhaps unable to be encoded efficiently.
If this is the case, then this should be seen in the amplitude of the EEG response. This
study found that stimuli that were judged to be most comfortable were also those with
the lowest EEG amplitude. This provides some support for the idea that excessive
neural responses might also contribute to discomfort judgements in normal populations,
in stimuli controlled for perceived contrast.

Keywords:Illusory motion, Op-art stimuli, Excessive neural responses, Discomfort, JCOpen
Subjects:C Biological Sciences > C830 Experimental Psychology
Divisions:College of Social Science > School of Psychology
ID Code:18784
Deposited On:21 Sep 2015 09:40

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