29: Voluntary Motion

Question 1

SMA stands for?

Answer 1

Supplementary motor area

Question 2

Primary motor cortex location

Answer 2

Precentral gyrus

Question 3

In primary motor cortex, areas that control fine movement vs general motion

Answer 3

Fine movement areas: contraction of a single muscle

General motion: contraction of a group of muscles

Question 4

What does PEc stand for?

Answer 4

Caudal area of posterior parietal cortex

Question 5

MIP and VIP stand for?

Answer 5

MIP: medial intraparietal area
VIP: ventral intraparietal area

Question 6

What are neurons excited by in F4 of the premotor cortex?

Answer 6

Excited by proximity - the closer the object is, the more likely they are to fire

Question 7

Efferent copy

Answer 7

What brain sends to muscle

Question 8

Interpositus nucleus

Answer 8

Globose + emboliform nuclei

Question 9

Ballistic motion

Answer 9

A movement so fast there’s no time to correct it

Question 10

What does SNPR stand for?

Answer 10

Substantia nigra pars reticulata

Question 11

What does GPi and GPe stand for?

Answer 11

Internal and external globus pallidus

Question 12

Voluntary motion without basal ganglia

Answer 12

Would be unable to initiate a movement of would get stuck at this tart of a motion

Question 13

How basal ganglia function in voluntary motion

Answer 13

Inhibition and withdrawal of inhibition