Hypocretin neurons are more active during ________ but are inactive during ________.
a. eating; drinking
b. normal waking; sleep
c. sexual behavior; feeding
d. reinforcement; punishment
e. slow-wave sleep; REM sleep
Question 2
Most of the serotonin neurons in the brain are located within the
a. nucleus accumbens.
b. reticular formation.
c. raphe nuclei.
d. striatum.
e. locus coeruleus.