Neuroscience: A Chromatic Retinal Circuit Encodes Sunrise and Sunset for the Brain

摘要

A new study reveals the retinal circuit for encoding the types of light prominent at sunrise and sunset. The output of that circuit is conveyed to the brain's master circadian clock. Subconscious processing of sky color changes may therefore be the key stimulus for conveying morning and evening information to the circadian timing system in the brain.