Summary
This study examines how the pupillary light reflex is governed by cone, rod, and intrinsically photosensitive retinal ganglion cell (ipRGC) contributions depending on stimulus intensity and duration. Understanding these summation effects is relevant for calibrating melanopic-based lighting metrics and designing light exposures that accurately target specific photoreceptor pathways.
Key Findings
- Above a certain luminance threshold and with longer stimulus durations, ipRGC responses dominate pupillomotor control, shifting spectral sensitivity toward the ipRGC (melanopsin) spectral sensitivity curve.
Categories
The Science of Light: Investigates summation effects on the pupillary light reflex for cone- and rod-specific stimuli, examining how ipRGC responses dominate pupillomotor control above certain luminance thresholds and stimulus durations.
Author(s)
MA Sonntag
Publication Year
2023
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