Research evidence suggests that
A) sleep is not necessary or helpful for memory formation.
B) REM sleep, but not NREM sleep, appears to be essential for memory formation.
C) NREM sleep, but not REM sleep, appears to be essential for memory formation.
D) both REM and NREM appear to play important roles in memory formation.

Question

Quizplus · Accepted Answer

Research evidence suggests that both REM and NREM sleep play important roles in memory formation. During REM sleep, the brain consolidates spatial and procedural memories while during NREM sleep, the brain consolidates declarative memories. Both types of memories are important for overall memory function, indicating that both REM and NREM sleep are essential for memory formation.

Research Evidence Suggests That