APFIVE Neurotransmitter Levels and Behavioral States
A researcher measured neurotransmitter levels (in arbitrary units) in the synaptic cleft during different behavioral states: Sleep: GABA=8.5, Serotonin=6.2, Glutamate=2.1; Alert: GABA=3.2, Serotonin=4.1, Glutamate=7.8; Stressed: GABA=2.1, Serotonin=3.5, Glutamate=9.2. Which neurotransmitter pattern best explains the sleep state measurements?
A
Increased excitatory and decreased inhibitory transmission
B
Decreased levels of all neurotransmitters
C
Equal levels of inhibitory and excitatory transmission
D
Increased inhibitory and decreased excitatory transmission
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