Why would a dopamine blocker be prescribed to someone with Tourette's syndrome or other involuntary behaviours?
A) The dopamine system is involved in motor control.
B) It would block the rewarding aspects of involuntary behaviour.
C) It would block negative reinforcement feedback loops.
D) The dopamine system is involved in speech production.

Question

Quizplus · Accepted Answer

Tourette's syndrome and other involuntary behaviours are associated with abnormalities in the dopamine system, particularly in areas of the brain involved in motor control. Dopamine blockers can help regulate motor function and reduce involuntary movements.

Answer: B 
 Dopamine is a key neurotransmitter involved in the reward system of the brain. Involuntary behaviours such as tics may be reinforced by the release of dopamine, leading to a cycle of repetition. By blocking the dopamine system, the rewarding aspect of these behaviours may be reduced, making them less likely to occur.

Answer: C 
 Involuntary behaviours may also be reinforced by negative feedback loops. For example, a person with Tourette's syndrome may experience social stigma or ridicule for their tics, which can lead to further anxiety and tics. Blocking the dopamine system can disrupt these negative feedback loops, making it easier for the person to control their behaviour.

Answer: D 
 Although there is some evidence to suggest that the dopamine system may be involved in speech production, this is not the primary reason why it would be prescribed in Tourette's syndrome or other involuntary behaviours.

Why Would a Dopamine Blocker Be Prescribed to Someone with Tourette's