Question

Obsessive-compulsive disorder is associated with abnormality of which one of the following neurotransmitters?

A. NE
B. Serotonin
C. Melatonin
D. Acetylcholine
E. Dopamine

Answer 1

Obsessive-compulsive disorder is associated with abnormalities in the neurotransmitter serotonin.

Step-by-step explanation:

The correct answer is B. Serotonin.

Obsessive-compulsive disorder (OCD) is associated with abnormalities in the neurotransmitter serotonin. Serotonin is a key player in mood control and alterations in its function have been implicated in several clinical states, including OCD.

For example, a study by Graybiel and Rauch (2000) found that serotonin dysfunction in the brain is linked to the development of OCD. They observed abnormal serotonin levels in the basal ganglia of individuals with OCD, which is a brain region involved in the regulation of motor and cognitive functions.