The rhythmic bursts of brain activity that occur during N2 sleep are called

A) alpha waves.
B) circadian rhythms.
C) sleep spindles.
D) delta waves.

Sleep Spindles

Bursts of brain activity visible on an EEG that occur during stage 2 of sleep, thought to be related to learning and memory.

Circadian Rhythms

Natural, internal processes that regulate the sleep-wake cycle and repeat roughly every 24 hours.

Delta Waves

Slow brain waves primarily associated with deep sleep and brain healing processes.