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.

Why is sleep considered essential for the brain?

• It is the only time the brain can truly rest.

• It helps the brain to conserve energy.

• It allows the brain to completely shut down.

• It reduces the brain's metabolic rate.

What is one of the first cognitive functions to be affected by sleep deprivation?

• Basic logical reasoning

• Speech clarity

• Hand-eye coordination

• Executive function

How does sleep deprivation affect a person's ability to focus?

• It causes increased distraction and difficulty focusing.

• It makes it easier to grasp the big picture.

• It enhances focus and concentration.

• It improves the ability to deal with novelty.

What similarity is observed between sleep-deprived individuals and older adults?

• Both experience enhanced creativity.

• Both have increased hand-eye coordination.

• Both show deterioration in frontal lobe functions.

• Both have improved memory recall.

What severe effects can prolonged sleep deprivation lead to?

• Increased ability to recognize faces

• Enhanced mood and personality

• Improved logical reasoning

• Hallucinations and paranoia