Morning light has no effect on retinal cells in resetting the circadian clock.

Question

Quizplus · Accepted Answer

Morning light is actually very effective in resetting the circadian clock, which is why exposure to natural light in the morning is recommended for people with sleep disorders or jet lag. Retinal cells in the eye contain photoreceptors called melanopsin cells, which are sensitive to blue light and play a key role in regulating the circadian rhythm. When these cells are exposed to light in the morning, they send signals to the brain to suppress the production of melatonin and increase alertness, helping the body adjust to a new sleep-wake cycle.

Morning Light Has No Effect on Retinal Cells in Resetting