Neurotransmitter Levels and Behavioral States
A study measured neurotransmitter levels (in arbitrary units) in the synaptic cleft during three behavioral states, with the following results: Sleep (GABA=8.5, Serotonin=6.2, Glutamate=2.1); Alert (GABA=3.2, Serotonin=4.1, Glutamate=7.8); and Stressed (GABA=2.1, Serotonin=3.5, Glutamate=9.2). The neurochemical activity during the sleep state is best characterized by which of the following?
A
Equal levels of inhibitory and excitatory transmission
B
Increased inhibitory and decreased excitatory transmission
C
Increased excitatory and decreased inhibitory transmission
D
Decreased levels of all neurotransmitters
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