Phivos Phylactou @phivph.com · Aug 3 Speculations about the nexus between pupil size and cortical excitability have existed for a while, but evidence for this link is scarce and mainly indirect. We wanted to test it out, by measuring TMS-induced pupil dilations at different TMS intensities and before vs after tDCS inhibition. [2/n]
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In three experiments (total n = 59) we found consistent TMS-induced pupil dilations, that peaked approx. 1 s after TMS. We showed this consistent effect in two different isoluminant conditions (300 & 400 lux) and with two different eye-trackers (eyelink & tobii). [3/n]