Basal Ganglia Week 5

Question 1

what does damage to the motor cortex cause?

Answer 1

damage causes paralysis and or spasticity.

motor cortex
- direct motor output = voluntary
- corticospinal tract.

Question 2

what does damage to the cerebellum cause?

Answer 2

damage results on inaccutate or pooly timed movement. (ataxia)

moduates movement accuracy
Receives afferent information from spinal cord.
projects to sensorimotor areas of cortex

Question 3

what does damage to the basal ganglia cause?

Answer 3

damage results in problems initiating and terminating movement.

Question 4

does the basal ganglia have direct connections to the spinal cord.

Answer 4

no direct connections to spinal cord

• strategic aspects of movement
• reciprocal connections to almost all areas of cerebral cortex.

Question 5

what are basal ganglia connections?

Answer 5

widespread reciprocal connections to cerebral cortex ( via thalamus)
- not just involved in movement
- behaviour and emotion

Question 6

what are cerebellum connection

Answer 6

connections only to sensorimotor areas of cerebral cortex via thalamus

• receives inout from brainstem and spinal cord
• involved almost exclusively with movement.

Question 7

what are the basla gangia collection of 5 nuclei

Answer 7

1)caudate
2) putamen
3) globus pallidus
- internal (GPi)
- External (GPe)
4) substantia nucleus (STN)
5)Substrantia nigra
- pars compacta (SNc)
- Pars reticulate (SNr)

Question 8

What are the causdate and putamen part of?

Answer 8

Caudate and putamen are part of the stratum.

Question 9

What are the gross anatomy : inputs

Answer 9

inputs
- striatum (caudate and putamen)
- reveives direct amd indirect via thalamus connections from cerebral cortex.