Item #9 of 10

Which of the following neurotransmitters appears to trigger the loss of muscle tone associated with REM sleep?

glutamate;
acetylcholine;
norepinephrine;
serotonin;
dopamine;

INCORRECT - The release of glutamate, not norepinephrine, appears to trigger the loss of muscle tone associated with REM sleep.

[Review Part 1 of the tutorial] [Review Part 2 (Matching) of the tutorial]