motor II Flashcards
what part of the brain compensate for any body postural change
brainstem vestibular nuclei and reticular formation nuclei
when does a feedforward anticipatory adjustment happen
just before movement begins to stabilise posture
where in the brain initiates the feedforward anticipatory adjustments
brainstem reticular formation nuceli
what is the babinski sign
an upward extensor plantar response
what does the babinski sign indicate
an upper motor neuron lesion
what is spasticity
increased muscle tone, or hyperactive stretch reflex or clonus
why does an UMN lesion cause spasticity
there is removal of the cortical inhibitory influences
true/false UMN lesions cause spasticity immediately
false - it takes a few days. for the first few days there is flaccidity until spinal circuits regain function
input to area 6 comes from…
the ventral lateral nucleus in dorsal thalamus
input to ventral lateral nucleus comes from…
basal ganglia
input from basal ganglia comes from…
prefrontal, motor and sensory cortexes
loop of basal ganglia, ventral lateral nucleus and cortexes
ventral lateral nucleus –> cortex (esp area 6) –> basal ganglia –> ventral lateral nucleus
corpus striatum is part of what brain group
basal ganglia
components of corpus striatum
caudate and putamen
what part of the basal ganglia are the input regions
caudate and putamen (corpus striatum)