Q 01/05

Dolphins sleep with one eye open; what is this slow-wave sleep pattern called?

A) Unihemispheric

B) Polyphasic

C) Monophasic

D) Ultradian

Answer · why

A) Unihemispheric

Unihemispheric slow-wave sleep lets one half of the brain rest while the other stays alert; the eye opposite the sleeping half shuts while the other s...

Q 02/05

What is the term for the temporary muscle paralysis that normally occurs during REM sleep?

A) Atonia

B) Ataxia

C) Akinesia

D) Dystonia

Answer · why

A) Atonia

Atonia is the muscle shutdown of REM sleep, produced by brainstem inhibition of motor neurons; when it fails, sleepers act out their dreams, the hallm...

Q 03/05

Roughly how long did 17-year-old Randy Gardner stay awake for his famous 1964 record?

A) 2 days

B) 5 days

C) 11 days

D) 25 days

Answer · why

C) 11 days

11 days: Gardner stayed awake about 264 hours ending 8 January 1964, observed by Stanford sleep researcher William Dement, and recovered after a few l...

Q 04/05

Roughly how long does one complete adult sleep cycle, through NREM and REM, last?

A) 10-15 minutes

B) 30-45 minutes

C) 90-110 minutes

D) 240-300 minutes

Answer · why

C) 90-110 minutes

90-110 minutes is one pass from light sleep through deep sleep to REM, repeated four to six times a night; REM periods lengthen toward morning, so a s...

Q 05/05

In which country is inemuri, dozing off in meetings, classes or on the train, widely tolerated?

A) Japan

B) South Korea

C) China

D) Finland

Answer · why

A) Japan

Japan: inemuri joins the words for 'being present' and 'sleep', and a nap in a meeting can be read as proof that someone has worked themselves to exha...