Why bother study the motor
pathways?
Anatomical substrates: How it works
Multiple parallel paths & diversity of spinal
connections
Damage to 1° motor cortex and pre-motor cortex
projections recover some lost functions
Damage to cortex and brain stem paths recover
some lost functions
With spinal cord injury. loss of monosynaptic
connections and alternate paths via segmental
and intersegmental interneurons can recover
some lost functions