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Flashcards in lesion III Deck (19)
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1
Q

Describe basal ganglia

A
  • INHIBITON AND FACILIATION

–> inhibiting involutnary movement at rest

–> releasing or disinhibiting voluntary movements

–> accelerating voluntary movements

–> stopping volitional movements upon completion

Start…. keep going…. stop

2
Q

define chorea

A
  • Dance like movements, jerky movements
3
Q

dystonia

A
  • spastic contraction of muscles
4
Q

blepospasm

A
  • involuntary blinking of eyes
  • holding them shut
5
Q

aphetosis

A
  • snake like movements of upper extremities (especially digits)
6
Q

hemiblallsim

A
  • subthalamic nucleus lesion
  • involuntary on one side of body (flinging, kind of violent)
7
Q

Parkinson’s characteristics

A
  • tremors, rolling motion (roll thumb between forefinger)
  • defecits starting movements and turning
  • have a masked face (no expression - lack of facilitation of facial muscles)
  • reptilian stare (no blinking or slowed blinking)
8
Q

what surgical intervention can be used in parkinson’s syndrome

A
  • removal of pallidum allowing for easiler facilitaiton of movements
9
Q

describe cerebellum

A
  • PRECISION
  • Integration of equilibrium and locomotion
  • integration of head and eye movements (MLF)
  • coordinating voluntary movements

–> comparing cortical input with motor output (corticopontocerebellar pathway)

–> providing feedback for ongoing movements (dentorubrothalmic pathway)

–> making adjustments to ongoing movements (vestibulospinal, rubrospinal pathways)

–> ensuring accurate targeting

make precise…. on tine…. on target

10
Q

dysmetria

A
  • abnormal trajectory
  • midline or hemispheric
11
Q

tandem walking

A
  • heel to toe walking
  • lesion to the midline of cerebellum (axial musculature) they have equal amount of chance to fall to either side; just affects stability
  • lesion in the hemisphere will result in falling to SIDE OF LESION (right lesion - falls to the right)
12
Q

finger to nose test

A
  • shows dysmetria on the IPSILATERAL side of the lesion
13
Q

anterior inferior cerebellar

A
  • gives off branches to caudal pons, rostral medulla
14
Q

posterior inferior cerebellar

A
  • gives off branches to the lateral surface of medulla
15
Q

superior cerebellar artery

A
  • runs over and gives off branches to the midbrain and maybe some to tectum
16
Q

SCA syndrome

A
  • results in IPSILATERAL dysmetria, limb ataxia
  • contralteral pain and temp loss
  • contralteral superior oblique paralysis

Ipsilateral hornor’s syndrome

–> drooping of upper lide, constricted pupils, flushed, dry face

17
Q

describe limbic system

A
  • Hippocampus = MEMORY

–> short term memory

–> consolidation into long term memory

  • Amygdala = fear

–> basic drives (fear, rage, sexual arousal)

–> organizing behavior appropriate to drives

18
Q

lesion in uncus hippocampus amygdala

A
  • foul but unidentifiable odor accompanied by strong feelings of deja vu
  • sweats profusely, his heart races and he gets dry mouth and upset stomach
  • violence
19
Q
A