Carcolepsy: Why Do We Get Sleepy in Cars?

The video discusses the issue of driver fatigue, which contributes to 20% of road accidents. It explores the potential causes of drowsiness while driving, including white noise and car vibrations. Studies suggest that vibrations may activate the parasympathetic nervous system, causing sleepiness, while the sympathetic system tries to compensate. Future car designs might include better shock absorption to reduce this effect.

What percentage of road accidents in the UK is attributed to driver fatigue according to the Royal Society for the Prevention of Accidents?

• 10%

• 20%

• 30%

• 40%

In the 2015 study, what was observed when participants drove on loud roads?

• They drove faster.

• They showed more signs of fatigue.

• They had fewer lane crossings.

• They felt more alert.

What did the 2018 study conclude about the cause of drowsiness in drivers?

• Noise from the road

• Vibration of the car

• Bright sunlight

• Lack of sleep

Which nervous system is activated by vibration, leading to drowsiness?

• Parasympathetic nervous system

• Sympathetic nervous system

• Central nervous system

• Peripheral nervous system

What is the body's response to the drowsiness caused by vibration?

• Sympathetic activation

• Decreased concentration

• Increased heart rate

• Reduced alertness