Summary Problem 5 sensorimotor

Brain Areas involved
sensorimotor hierarchy
- Posterior parietal Directing behavior by
association cortex  providing spatial information
 Direct attention (integration about original
position of body parts and position of
external object)
 Lies posterior in parietal lobe
 Sends to
o Dorsolateral prefrontal association
cortex
o Secondary motor cortex
o Frontal eye field (control of eye
movement)
 Input from
o Visual system
o Auditory system
o Somatosensory system
- Dorsolateral  Evaluation of external stimuli
prefrontal  Initiation of voluntary reaction (command for
association cortex movement)
 Sends to
o Areas of secondary motor cortex
o Primary motor cortex frontal eye field
o Back to posterior parietal association
cortex
 Input from
o Posterior parietal association cortex
- Secondary motor Programming specific patterns of movement after
cortex instruction from dorsolateral prefrontal cortex
 Four parts
1. Supplementary motor area (top of
frontal lobe)
 learning and performing sequences
of movement
2. Premotor cortex (from under sup.. till
lateral fissure)
 Visually guided tasks and
movement plan in terms of location of
stimulus and hand
 Learning and executing behavior
that is guided by sensory information
3. Two cingulate motor areas
 Sends to
o Primary motor cortex
 Input from
o Both association cortex
o Mirror Part of secondary motor cortex
neurons  Fire when goal direction action is performed