The activation of light-sensitive proteins in our eyes' retinas signals our brain to decrease the production of

Question

Quizplus · Accepted Answer

Light-sensitive proteins in our eyes' retinas signal our brain to decrease the production of the hormone melatonin. Melatonin is responsible for regulating our sleep-wake cycle and is produced in greater quantities in the absence of light. When our eyes detect light, it signals the brain to decrease production of melatonin and increase alertness.

The Activation of Light-Sensitive Proteins in Our Eyes' Retinas Signals