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Assessing the relationship between pupil diameter and visuocortical activity.

Nina N Thigpen1, Margaret M Bradley1, Andreas Keil1

  • 1Center for the Study of Emotion & Attention, Department of Psychology, University of Florida, Gainesville, FL, USA.

Journal of Vision
|July 21, 2018
PubMed
Summary

Pupil dilation does not cause increased visuocortical activity. This study found no relationship between pupil size changes and steady-state visually evoked potential (ssVEP) power, suggesting pupil size does not drive cognitive or affective task modulation.

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