The Focus on Neuroscience box "Dopamine Receptors and Obesity" discussed a study in which women drank a rich chocolate shake and then researchers scanned their brain with fMRI. Six months later, the women returned and drank the shake again, and again the researchers scanned their brain. What happened to the women whose weight remained stable in the six-month interval between brain scans?
A) They showed no difference in dopamine response to the milkshake between the two scans.
B) They showed an increase in dopamine response to the milkshake during the second scan.
C) They showed a decrease in dopamine response to the milkshake during the second scan.
D) They showed no dopamine response to the milkshake during the second scan.

Question

Quizplus · Accepted Answer

The women whose weight remained stable in the six-month interval between brain scans showed no difference in dopamine response to the milkshake between the two scans. This suggests that their brains did not become desensitized to the rewarding effects of the milkshake, which may help explain why they were able to maintain a stable weight.

The Focus on Neuroscience Box "Dopamine Receptors and Obesity" Discussed