Class_11_Frontal-Subcortical Function Flashcards
(19 cards)
Parts of the frontal cortex
- prefrontal cortex
- anterior cingulate
- basal ganglia
Parts of the basal ganglia
- caudate
- putamen
- globus pallidus
Dysexecutive syndrome
Lateral prefrontal + superior parietal cortex
- Problems with working memory
- prospective memory
- planning
- multi-tasking
- sustained attention
Apathy syndrome
Medial prefrontal
- Low motivation
- low interest
- no hobbies
- no social life
- limited speech
Disinhibition syndrome
Orbitofrontal
- Swearing
- risk taking
- sexually inappropriate
- aggression
- poor social skills
Lacunes
small lesions of the subcortical grey and white matter
Lacunar strokes
strokes affecting the subcortical areas
- e.g., basal ganglia or white matter
- interfere with the function of the cortical-subcortical circuits
Fronto-parietal system
general intelligence and executive functions
Frontal-Subcortical Assessment Battery
bedside tests of executive functions
- subcortical impairment
- e.g., Parkinson’s disease
1. verbal fluency subtest
2. Luria three step subtest
3. Go/no-go subtest
Dynamic aphasia
frontal cortex, or basal ganglia damage
- poor verbal fluency
- can name pictures,
- can repeat what they are told
- can comprehend speech
- indicate general executive impairment
Brief Executive Language Screen
- Buccofacial apraxia
- verbal fluency
- picture description
- Hayling Test
- Go/No-go
Cortical-subcortical circuits
basal ganglia
- behavior control
- non-declarative learning
Non-declarative learning tests
- Classification tasks
- Weather Prediction Task
Medial prefrontal circuit
motivation
Akinetic mutism
medial prefrontal / anterior cingulate circuit damage
- extreme loss of motivation
- volition
Abulia
“lack of will, drive, or initiative for action, speech, and thought
Orbitofrontal circuit
- utilization behavior
- behavior regulation
Environmental dependency syndrome
orbitofrontal cortex damage
- tend to use objects placed in front of them
Frontal Systems Behavior Scale- FrSBe
dysexecutive, apathy, and disinhibition