Higher Motor Control

Question 1

Primary motor cortex

Answer 1

M1, area 4. important for direct motor control. If this is lesions all kinds of movements are affected

Question 2

Pre Motor Cortex (PMC) (with posterior parietal cortex (PPC))

Answer 2

Focused on externally guided action. Stimulus driven eg catching a ball

Question 3

Supplementary motor area (SMA) (with prefrontal cortex) (PFC)

Answer 3

Focused on internally guided action, eg selecting which object to pick up

Question 4

Population vector

Answer 4

Neurons are not very selective, so you need a population coding (vector sum) to tune a movement.

All population vactors provides a cortical representation of movement.