The reinforcing effects of alcohol may be due to
A) decreased activity within the ventral tegmental area.
B) indirect antagonism of NMDA receptors.
C) inhibition of the limbic system.
D) release of glycine from cells within the spinal cord.
E) increased activation of GABAA receptors.
Answer: E
Rationale: The reinforcing effects of alcohol may be due to increased activation of GABAA receptors.
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