Question

The reinforcing effects of alcohol may be due to?

1) decreased activity within the ventral tegmental area.
2) indirect antagonism of NMDA receptors.
3) inhibition of the limbic system.
4) release of glycine from cells within the spinal cord.
5) increased activation of GABAA receptors.

Answer 1

The reinforcing effects of alcohol may be due to increased activation of GABAA receptors, which leads to decreased excitability of neurons and a calming effect on the brain. Correct option is 5.

Step-by-step explanation:

The reinforcing effects of alcohol may be due to increased activation of GABAA receptors. Alcohol enhances the inhibitory effect of GABA receptors, leading to decreased excitability of neurons and a calming effect on the brain. This is why alcohol consumption can result in feelings of relaxation and sedation.