L6 basal ganglia

Question 1

3 psychological functions of Basal ganglia

Answer 1

decision making
social behaviour
emotion

Question 2

what does the Striatum consist of

Answer 2

caudate nucleus

putamen

Question 3

lentiform nucleus consist of

Answer 3

putamen and globus pallidus

Question 4

two parts of globus pallidus

Answer 4

internus and externus

Question 5

what are basal ganglia

Answer 5

network of subcortical nuclei composed of grey matter

Question 6

3 motor functions of basal ganglia

Answer 6

indirect output to motor neurons
receives input from entire cerebral cortex
filters out incorrect inappropriate responses

Question 7

by regulating direct/indirect pathways the BG are vital in:

Answer 7

1. starting/stopping specific movements and behaviours

2. prevention of antagonistic/unwanted movement

Question 8

define Parkinson’s disease

Answer 8

neurodegenerative disorder of the CNS, affecting the dopamine releasing neurons of the substantia nigra

Question 9

bradykinesia (2)

Answer 9

• slowness and poverty of movement
• festinating - gradual reduction in speed and amplitude of repetitive actions -freeze episode
• lack of automatic responses e.g. saving reactions low

Question 10

rigidity

Answer 10

increased muscle activity causing resistance to passive movement (entire rom )
present in antagonistic pairs of muscle groups

Question 11

resting tremor

Answer 11

alternating contraction of antagonistic pairs
common in upper limbs
increase with anxiety

Question 12

communication with P.d.

Answer 12

slow quiet voice

limited non-verbal communication (gestures)+fascial

Question 13

swallow with p.d.

Answer 13

reduced swallow control
reduced food organisation
drooling

Question 14

name the cues utilised for p.d. patients

Answer 14

auditory cue
visual cue
kinaesthetic cue
cognitive cue