cognitive disorders
Terms
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- diffuse brain damage
- attention often impaired due to hypoxia, ingestion of toxic substances
- focal brain lesions
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circumscribed areas of abnomral change in brain structure
location and extent of damage determines problems - main consequences seen in people with brain damage
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1. impairment of memory
2. impairment of orientation
3. impairment of learning, comprehension and judgement
4. impairment of emotional control or modulation
5. apathy or emotional blunting
6. impairment in the initiaion of behavior
6. impairment of controls over matters of propriety and ethical conduct
8. impairment of receptive and expressive communication
9. impaired visuospatial ability - delirium defined
- acute confusional state that lies between normal wakefulness and stupor or coma
- symptoms of delirium
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dificulty in concentration
disruption of the sleep-walking cycle
incoherent speech
memory impairment for recent events
perceptual disturbances
mood/activity swings - dsm criteria for dementia
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one or more:
1. aphasia
2. apraxia
3. agnosia
4. disturbance of executive functions - aphasia
- deterioration in language function
- agnosia
- failure to recognize or ID objects despite intact sensory function
- apraxia
- impaired ability to execute motor activities despite intact motor ability
- clinical presentation of alzheimer's disease
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gradual onset
-prominent amnesia with rapid forgetting
-marked executive dysfunction
-speeded perceptual-motor integration defects
-lang. production and comprehension
-visuospatial impairments - risk factors for alzheimers
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1. age
2. mild congnitive impairment
3. positive family history
4. apolipoprotein E
5. head injurly
6. women>men
7. education/lifetime occupational attainment - frontal-subcortical dementia
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involves frontal-subcortical pathways or subcortical structures intimately connected with the frontal lobes
- vascular dementia: stroke
- parkinsons disease - vascular dementia
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clot - stroke
burst - anurism - parkinsons disease symptoms
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1. stooped and rigid posture, shuffling gait
2. tremor
3. muscular rigidity
4. masklike facial appearance - 3 types of traumatic brain injury
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-closed-head injuries
-penetrating head injuries
-skull fracture - 2 types of amnesia that can result from TBI
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1. anteriograde - inability to remember since accident
2. retrograde - inability to remember before accident