Why do we sleep?

The video explores the necessity of sleep for brain function, highlighting that even at rest, the brain remains active. Sleep deprivation studies reveal its impact on cognitive and behavioral functions, particularly affecting the frontal lobe responsible for executive functions. The video discusses how sleep loss can mimic aging effects on the brain, leading to memory issues and impaired decision-making. Long-term deprivation can cause severe consequences, including hallucinations and personality changes, as seen in historical cases.

What were the effects observed in Randy Gardner after prolonged wakefulness?

What implications does sleep deprivation have on personality, according to the text?