Question

during rem sleep,
the level of stress in the body rises
the brain prepares for daytime performance
eye movement slows down
heart rate and blood pressure increase
question 5 (multiple choice worth 5 points)
(02.01r lc)
blue light reduces quality sleep and comes from
light bulbs
evening moonlight
morning sunlight
electronic screens

Explanation:

1. REM sleep is linked to cognitive functions like memory consolidation, which supports daytime performance; stress levels do not rise, eye movement is rapid (not slowed), and while heart rate/blood pressure can fluctuate, the core functional role is preparing the brain for waking activities.
2. Electronic screens (phones, computers, TVs) emit significant amounts of blue light, which suppresses melatonin production and disrupts sleep quality. Light bulbs typically emit warmer, lower blue light, moonlight has minimal blue light, and morning sunlight's blue light helps regulate the circadian rhythm rather than reducing sleep quality.

Answer:

1. the brain prepares for daytime performance
2. electronic screens