basal ganglia Flashcards
1
Q
function of basal ganglia
A
- motor functions
- non-motor functions
2
Q
motor functions of basal ganglia
A
- action selection
- inhibition of competing movements
- enabling motor programs
3
Q
non-motor functions of basal ganglia
A
- cognition and emotion
- reward and addiction
4
Q
basal ganglia pathology
A
- movement disorders (hypokinetic and hyperkinetic)
- cognitive and neuropsychiatric symptoms
5
Q
inputs to motor cortex (area 4)
A
basal ganglia work through motor cortex
- thalamic nuclei (VA and VL)
- premotor cortex (area 6)
then descend!
6
Q
basal ganglia pathway
A
- motor cortex signals down pyramidal tract to alpha motor neuron
- association, sensory, and motor cortex signal to basal ganglia
- basal ganglia to VA and VL
- VA and VL to motor cortex
7
Q
parts of basal ganglia
A
- caudate and putamen (basically 1 nucleus)
- globus pallidus
8
Q
the internal globus pallidus
A
- send inhibitory signals the thalamus
9
Q
the caudate and putamen function to
A
inhibit the globus pallidus
10
Q
the caudate and putamen together can be called
A
neostriatum
11
Q
brain section
A
12
Q
brain section zoomed in to see caudate and globus pallidus
A
13
Q
associated nuclei (in midbrain)
A
- substantia nigra
- subthalamic nucleus
14
Q
substantia nigra
A
- reciprocally connected to caudate and putamen
- dopaminergic projection to striatum
15
Q
subthalamic nucleus
A
- reciprocally connected to globus pallidus