Pattern reversal chromatic VEPs like onsets, are unaffected by attentional demand

Attention has been shown to modulate the visual evoked potential (VEP) recorded to reversing achromatic patterns. However, the chromatic onset VEP appears to be robust to attentional shifts. Functional magnetic resonance imaging (fMRI) responses to both chromatic and achromatic reversing patterns ar...

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Bibliographic Details
Published inVisual neuroscience Vol. 41; p. E006
Main Authors Arthur, Christabel, Kavcar, Osman B., Wise, Mackenzie V., Crognale, Michael A.
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 16.12.2024
Subjects
Adult
Attention - physiology
Color Perception - physiology
Evoked Potentials, Visual - physiology
Female
Humans
Magnetic Resonance Imaging
Male
Pattern Recognition, Visual - physiology
Photic Stimulation
Reaction Time - physiology
Visual Pathways - physiology
Young Adult
fMRI
attention
visual pathways
Pattern reversal VEPs
multiple object tracking
Online AccessGet full text
ISSN0952-5238
1469-8714
DOI10.1017/S0952523824000063

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Summary:Attention has been shown to modulate the visual evoked potential (VEP) recorded to reversing achromatic patterns. However, the chromatic onset VEP appears to be robust to attentional shifts. Functional magnetic resonance imaging (fMRI) responses to both chromatic and achromatic reversing patterns are also affected by attention. Resolution and comparison of these results is problematic due to differences in presentation mode, stimulus parameters, and the source of the response. Here, we report the results of experiments using comparable perceptual contrasts, pattern reversals, and a co-extensive and highly demanding multiple object tracking (MOT) task while exploring the effects of attentional modulation across both the chromatic (L − M) and (S − (L + M)) and the achromatic visual pathways. Our findings indicate that although achromatic VEPs are modulated by attention, chromatic VEPs are more robust to attentional modulation, even when using comparable stimulus presentation modes and in the presence of a highly demanding distractor task. In addition, we found that the majority of the modulation appears to be from a relative decrease in response due to the distractor task rather than a relative increase in response during heightened attention to the stimulus.
ISSN:0952-5238
1469-8714
DOI:10.1017/S0952523824000063