1i Motor 1&2 Motor Cortex 3

Question 1

Where is Premotor Cortex located relative to Primary Motor strip?

Answer 1

rostral to Area 4

Question 2

What muscles does Area 6 control?

Answer 2

proximal musculature, especially arms

Question 3

Where is Supplementary Motor Cortex located relative to Primary Motor strip?

Answer 3

rostral (and medial) to Area 4,

Question 4

Where is Premotor cortex Located?

Answer 4

lateral area 6

Question 5

Where is Supplementary Motor Cortex Located?

Answer 5

medial area 6

Question 6

What neurons are located in both medial and lateral area 6?

Answer 6

corticospinal neurons

Question 7

What does lesion of lateral Area 6 present as?

Answer 7

apraxia, especially involving bimanual (hand) coordination

Question 8

How does lesion of medial area 6 present?

Answer 8

apraxia (trouble with sequencing movements)

Question 9

What does the Supplementary Motor Cortex do?

Answer 9

plans motor actions & sequencing (neurons are highly selective, there are different neurons that “think” about initiating even very similar movements)