QuestionSBA
QuestionChoice
The amygdala is most associated with emotional processing, particularly in the generation of fear and emotional responses. It is not a primary regulator of motor behaviours like teeth grinding and tidying obsessions. The correct answer is the basal ganglia, which has a role in the coordination of movements and regulating repetitive or habitual behaviours.
10025322
c
Amygdala
QuestionChoice
The thalamus serves as a relay station for sensory information and plays a role in alertness and consciousness. Although it plays a vital role in processing sensory input, it is not a primary regulator of motor behaviours like teeth grinding and tidying obsessions. The correct answer is the basal ganglia, which has a role in the coordination of movements and regulating repetitive or habitual behaviours.
10025323
d
Thalamus
QuestionChoice
The occipital cortex is part of the brain involved in the processing and perception of visual information. It does not generate motor responses. By contrast, the basal ganglia is associated with regulating repetitive or habitual behaviours, making this option incorrect.
10025321
b
Occipital cortex
QuestionChoice
The hypothalamus is primarily responsible for regulating various essential functions, including temperature, hunger, thirst, and the body's circadian rhythm. It is more linked to autonomic functions, hormonal regulation, and basic survival behaviours. The correct answer is the basal ganglia, which has a role in the coordination of movements and regulating repetitive or habitual behaviours.
10025324
e
Hypothalamus
QuestionChoice
This is the correct answer. The basal ganglia (striatum) are a collection of subcortical forebrain nuclei that function in the coordination of movements and regulating repetitive or habitual behaviours. Dysregulation of the basal ganglia can lead to the development of obsessive-compulsive disorder (OCD) and related behaviours, where individuals may have an overwhelming urge to perform certain actions repeatedly (obsessions) and feel compelled to do them (compulsions), as in this vignette.
10025320
a
Basal ganglia
Concept
Chapter
2693
3823
Basal ganglia circuits
Topic
152
Neuroscience
17462
A 19 year old male teenager visits the GP with his mother, who is concerned about his mental health. He has started to perform certain behaviours obsessively, even when there seems to be no reason for them, such as turning the lights on and off and repetitive cleaning. He is otherwise fit and well, although has been to see the GP recently due to a teeth grinding habit that is still ongoing.

Which of the following brain structures is most likely implicated in this patient's behaviour?
a