PSYCHOLOGY OF EMOTIONS

THE PSYCHOLOGY OF EMOTIONS

STATES OF CONSCIOUSNESS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
During which stage of sleep do “sleep spindles” occur?
A
NREM-1
B
NREM-2
C
NREM-3
D
REM
Explanation: 

Detailed explanation-1: -Spindles occur during both light NREM sleep and deep slow-wave sleep, but not during REM sleep. Sleep spindles preferentially coincide with the up-states of high-amplitude slow waves, yet can likewise be observed on their own, as is often the case during light NREM sleep.

Detailed explanation-2: -The K-Complex is a waveform identified on electroencephalography (EEG), which primarily occurs during Stage 2 (N2) of NREM sleep, along with sleep spindles, which make up the two distinct features seen in this stage.

Detailed explanation-3: -Sleep spindles are short (<2 s), synchronous bursts of activity between 11 and 17 Hz. They are found throughout NREM sleep but are particularly numerous in NREM stage 2 (NREM2) sleep.

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