Motor Control

Question 1

Proprioception

Answer 1

Feedback to the spinal cord from muscles receptors when in activity

Question 2

Receptors charged with Proprioception, type of signal

Answer 2

Golgi tendon (tension) and muscle spindle (stretch and length)

Question 3

Flaccid paralysis what is it

Answer 3

no reflexes below an injury

Question 4

Controllers of the controllers: part 1 cortex (name and function)

Answer 4

SMA: internally generated movement
PMC: External stimuly

Question 5

Where are Mirror Neurons?

Answer 5

in the Premotor cortex (PMC)

Question 6

Controllers of the controllers: part 2 subcortex (name and function)

Answer 6

Cerebellum: excitatory learning to aim a violin at a moving cat while you dance to a waltz (skilled movements, motor learning, timing, aiming at a moving target)
Basal ganglia: inhibitory

Question 7

Huntington’s disease symptoms and cause

Answer 7

Dance macabre, problems with concentration. Damage to the striatum (caudte nucleus + putamen) in the basal ganglia

Question 8

Parkinson’s disease symptoms and cause

Answer 8

Hypokinesia and Bradikinesia= rigid and slow movements

Damage to the substantial nigra in the Basal Ganglia

Question 9

Treatments to Parkinson’s disease

Answer 9

1- LDOPA: increases excitatory connections
2- Pallidotomy: decreases inhibitory connections
3 - Deep brain stimulation: a pacemaker for the basal ganglia, does the substantial nigra’s job (?)