Week 1: Pathways- Spinocerebellar

Question 1

What function does the spinocerebellar tract serve?

Answer 1

Relay info from proprioceptors and spinal interneurons about activity to the cerebellum so that the cerebellum can adjust movement and posture

Question 2

2x2 cerebellar tracts

Answer 2

• 2 high fidelity pathways that relay somatotopic info from muscle receptors, tendons, and joints
• 2 pathways that relay internal feedback about activity

Question 3

High fidelity spinocerebellar pathways

Answer 3

• Posterior spinocerebellar pathway

- Cuneocerebellar pathway

Question 4

Posterior spinocerebellar pathway

Answer 4

Legs and lower 1/2 of body to cerebellum via ipsilateral inferior cerebellar peduncle

Question 5

Cuneocerebellar pathway

Answer 5

Arms and upper 1/2 of body to cerebellum via ipsilateral inferior cerebellar peduncle

Question 6

Internal Feedback Tracts

Answer 6

• Anterior spinocerebellar tract

- Rostrospinocerebellar tract

Question 7

Anterior spinocerebellar tract

Answer 7

• Transmits info from thoracolumbar spinal cord

- Info enters cerebellum via superior cerebral peduncle

Question 8

Rostrospinocerebellar tract

Answer 8

Transmits info from cervical spinal cord to ipsilateral cerebellum via superior and inferior cerebellar peduncles

Question 9

Do we consciously perceive info processed by the spinocerebellar tract?

Answer 9

No

Question 10

Spinoverebellar tract lesion

Answer 10

Movement is more coordinated w/ vision and not w/ eyes closed

Question 11

Cerebellar lesion

Answer 11

Eyes open or closed makes no difference