1
Premotor Cortex
- anitcipating postural movement
- laterla trunk and girdle muscles
- Lesion: aphaxia and perservating
2
Supplemental Motor Area
- bilateral movemnt
- orientation of head and eyes (scanning the room, typing while watching the board)
- initiation of movement, sequencing of movement, muscle memory (pre-programming of motor sequences
- Lesion: aphaxia
3
Broca's Area
- expressive langaige
- speech production
- Lesion: broca's aphaxia
4
primary motor cortex (precentral gyrus)
- voluntray movemnt, skilled hand movement
- activaiton of the agonist's muscle, inhibiting antagonist's muscles
- force, direction, and speed
- spatial and temporal aspects of movement
- Lesion: paresis (strength/control loss), loss of motor movement, spastic dysarthia