Question

Which injury to which marked region would hamper the sleep-wake cycle?

Answer 1

pars intermedia controls sleep wake cycle

Answer 2

Sleep wake cycle or circadian rhythm is basically a 24 hour cycle, runs at the back your brain that controls your sleep and wake turns at the same time every day. It is such a blessing to have.

Hypothalamus,a part of your mid-brain, controls your circadian rhythm. Any injury in the mid brain region can onset Circadian Rhythm Disorder. It is a disorder in which your continuous sleep patterns disrupts. It occurs normally when there is a clash between your internal body clock and the external environment. For example: intense light at the night time can change your cycle and disrupts your sleep and wake cycle.