In addition to dopamine,a second population of cells within the VTA containing _____ are also important in the reward circuit.

Question

Quizplus · Accepted Answer

The correct answer is D, GABA. While serotonin, glutamate, and histamine do play important roles in the brain, they are not specifically associated with the reward circuit located in the VTA. GABA, on the other hand, is an inhibitory neurotransmitter that is released by a second population of cells within the VTA and plays a key role in regulating the activity of dopamine neurons. This helps to ensure that dopamine release occurs only in response to truly rewarding stimuli, rather than being triggered by random or irrelevant cues. Therefore, D is the best choice for this question.

In Addition to Dopamine,a Second Population of Cells Within the VTA