During a sleep study, researchers placed an electrode measuring muscle tension on the chins of participants. During REM sleep the EEG showed a flat line. Which of the following is the best explanation for this phenomenon? A)EEGsonly measure brain waves not motor messages so the researchers expect to see a flat line.B)The EEGs are correctly showing the slow waves characteristic of REM sleep.C)Participants are physically active during this stage and are very difficult to awaken.D)The brainstem blocks messages from the motor cortex, which leaves you temporarily paralyzed during REM sleep.

Then try StudyFetch, the AI-powered platform that can answer your questions and teach you more about it!