Stroke

Question 1

What is spasticity?

Answer 1

a motor disorder characterised by velocity-dependent increase in tonic stretch reflexes with exaggerated tendon jerks, resulting from hyper-excitability of the stretch reflex, as one component of the upper motoneuron syndrome

Question 2

How often do moto impairments occur in stroke?

Answer 2

80% of survivors

Question 3

What are the Motor impairments after stroke?

Answer 3

weakness, spasticity, abnormal motor synergy, disordered motor control

Question 4

What happens when a stroke that damages motor cortical pathways?

Answer 4

the limbs on the two sides of the body often show large differences in impairment (cross-over of pyramidal tract)

Question 5

What is something that can occur in recovery of stroke?

Answer 5

roles of non-pyramidal tract descending tracts may increase; shifting balance of limb control from the injured contralateral to the spared ipsilateral hemisphere

Question 6

Studying voluntary movments in rats with whole frontal or neocortex cortex removed?

Answer 6

Can walk, climb, swim and groom

Question 7

Studying voluntary movments in monkeys with motor cortex removed?

Answer 7

can reach and pick up food