Goal selection/planning

Question 1

The “internal pathway” includes:

Answer 1

the frontal lobe, SMA, and primary motor cortex

Question 2

the “external pathway” includes:

Answer 2

sensory cortex, parietal lobe, PMC, M1

Question 3

reaching, looking, and grasping are all actions associated with

Answer 3

the parietal cortex

Question 4

stimulations of parietal cortex results in

Answer 4

desire to move, or even belief that they moved (even if they didn’t)

Question 5

stimulations of premotor cortex results in

Answer 5

actions without intent or awareness of movement

Question 6

Broddmann’s area 6

Answer 6

PMC and SMA

Question 7

this area inhibits undesired actions; lesions may result in alien hand syndrome

Answer 7

SMA

Question 8

which area coordinates actions independently between hands (piano or tying shoelaces)

Answer 8

SMA; lesions result in mirroring actions in both hands

Question 9

Bengamin Libet in 1983

Answer 9

readiness potential ; subjects note when they “wanted” to move, then moved. Could see potentials 1.5 seconds before they “decided”

Question 10

Patients with lesions to this area cannot report desire to move until right before they move

Answer 10

parietal lobe

Question 11

The basal ganglia is made up by two pathways. They are:

Answer 11

Indirect (broad, slow and inhibitory) and Direct (quick, selective excitation)

Question 12

The basal ganglia is involved in action selection. It projects to

Answer 12

the SMA

Question 13

which pathway goes through the substansia nigra?

Answer 13

Direct (excitatory —- Parkinsons)