Brain Function and Stress Effects

The video explores how simple tasks, like imagining throwing a ball, engage over 50% of the brain, debunking the myth that we only use a small portion of our brain. Biomedical engineer SRI Sarma explains that, like a house, we use different parts of our brain for various tasks. The video also challenges the idea that the brain works better under pressure, showing that stress can impair cognitive function by affecting the prefrontal cortex.

What percentage of the brain is used when imagining throwing a ball?

• 10%

• 1%

• 5%

• Over 50%

Who explains the brain's function in the video?

• A neuroscientist

• A physicist

• A psychologist

• A biomedical engineer

How does SRI Sarma compare the brain's usage to a house?

• The brain never uses all rooms

• The brain uses different rooms at different times

• The brain uses all rooms at once

• The brain is like a single room

What is the purpose of the pattern recognition game in the video?

• To improve cognitive skills

• To test memory

• To entertain viewers

• To demonstrate brain function under pressure

What was the main factor that made the last round of the game feel harder?

• The pattern was longer

• The colors were different

• The time to answer was reduced

• The pattern was more complex

What chemicals are released in the brain under pressure?

• Dopamine and serotonin

• Endorphins and oxytocin

• Cortisol and melatonin

• Adrenaline and noradrenaline

What part of the brain is affected by stress during cognitive tasks?

• The amygdala

• The occipital lobe

• The cerebellum

• The prefrontal cortex

How does stress impact the prefrontal cortex?

• It changes its structure

• It reduces its effectiveness

• It has no effect

• It enhances its function

What is the role of adrenaline in stressful situations?

• To pump up the body for action

• To decrease heart rate

• To increase focus

• To calm the brain

In what situations are adrenaline and noradrenaline helpful?

• While sleeping

• When learning new skills

• In life-threatening circumstances

• During relaxation