Psychology / Unit 3 Psych 0314 short lesson, about 20 seconds
NREM Stage N2
Captions available
The idea
Stage N2 is a deeper non-REM stage marked by sleep spindles and reduced responsiveness to the environment.
In practice
Bursts of rapid brain activity appear against a slower background as body temperature continues falling.
Where people slip
N2 occupies the largest share of a night. Most sleep is neither the lightest nor the deepest kind.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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