Lesion localisation - Brain Flashcards
1
Q
3 parts of the brain (simplified)
A
- forebrain
- cerebellum
- brainstem
2
Q
Forebrain - what does it do?
A
- behaviour
- initiation of movement
- perception of sensation, including conscious proprioception
3
Q
CS of forebrain damage
A
- altered behaviour
- altered mentation (obtundation or dullness)
- seizures
- altered perception, including central blindness and altered proprioception
- inability to initiate movement (paresis/paralysis)
- head turn
- circling toward the lesion
4
Q
Cerebellum - what does it do?
A
- fine motor control
5
Q
CS of cerebellar dysfunction?
A
- hypermetric ataxia
- intention tremor
- wide based stance
- (absent menace response)
- (some vestibular signs, but uncommon)
6
Q
Brainstem - what is it / what does it do?
A
- contains cranial nerve nuclei (III-XII)
- long tracts connecting forebrain to spinal cord (all motor and sensory tracts)
7
Q
CS of brainstem damage
A
- cranial nerve deficits
- long tract signs i.e. proprioceptive deficits or if more severe, paresis
- (obtundation)
