Question

question 2
2 points
stage 1 sleep is characterized by a predominance of ______ wave activity in the brain.

• delta
• kappa
• alpha
• beta

clear selection

Explanation:

Stage 1 sleep is the lightest sleep stage, transitioning from wakefulness. Alpha waves are dominant in relaxed wakefulness, and as one enters Stage 1, theta waves (not listed here, but among the options, alpha is the correct precursor/dominant wave as the shift begins; delta waves are deep sleep, beta is wakeful alertness, kappa is not a sleep-associated brain wave).

Answer:

alpha