Question

8. Carla's sleep is being monitored in a research lab The assistant notices that Carla's EEG shows a high presence of sleep spindles. It can be concluded that Carla is likely in:

a. REM sleep.
b. Stage 1 of NREM.
c. Stage 2 of NREM.
d. Stage 3 of NREM.

Answer 1

Carla's EEG showing a high presence of sleep spindles suggests she is in Stage 2 of NREM sleep, characterized by deep relaxation and important for learning and memory.

Step-by-step explanation:

When Carla's EEG shows a high presence of sleep spindles, it is an indication that she is likely in Stage 2 of NREM sleep. Sleep spindles and K-complexes are distinctive features of Stage 2 sleep. During this stage, the body goes into a state of deep relaxation, and these brief bursts of high frequency brain waves are thought to be important for learning and memory. In contrast, Stage 1 NREM is a transitional phase with theta waves, Stage 3 NREM is characterized by delta waves and known as deep sleep, and REM sleep has brain wave patterns similar to wakefulness and includes dreaming and muscle paralysis.