No evidence for a cortical origin of pupil constriction responses to isoluminant stimuli.
Marshev V; Frey HG; Brascamp J · 2025 · Journal of vision
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
Abstract (excerpt)
The pupil constricts in response to visual stimuli that keep net luminance unchanged but that do introduce local luminance increments and decrements-a reaction here called "isoluminant constriction." This response can form a pupillometric…
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Metadata source: Europe PMC · DOI 10.1167/jov.25.10.7