{"response":"{\"What is the retinohypothalamic pathway?

The retinohypothalamic pathway is like a special road that helps your body know when it's time to sleep or wake up.

Imagine your eyes are little messengers who send messages all the way to your brain’s control center, which is called the hypothalamus. This control center is like the boss of your body's clock, it decides when you should be tired and when you should be ready for action.

Your eyes have special cells that can see light, even if you’re barely awake. These cells send messages through a road called the retinohypothalamic pathway to tell the boss in your brain: "Hey, it's bright outside, time to wake up!" or "It’s dark now, time for sleep!"

This is why you feel sleepy at night and alert during the day. It's like having a little helper inside your head that uses light to keep your body on track.

When this road doesn’t work properly, it can be harder to fall asleep or wake up, just like when your favorite toy breaks, and you don't know what time it is anymore!