w9 and 10 Flashcards
cause of dementia
neurological disorder, caused by progressive cell death
hallmarks of dementia
memory loss and effects on language functioning
define aphasia
language impairments
define apraxia
motor memory impairments
define agnosia
sensory memory impairments
what is needed to diagnose dementia
- memory impairment
- one of the a’s (aphasia, apraxia, agnosia, abstract thinking impairments)
- impairment in social behaviour
- not explainable by another disorder
cause of degenerative dementias
genetic
cause of non degenerative dementias
a heterogeneous group of disorders with diverse origin
example of cortical dementia
Alzheimer’s
example of subcortical dementia
Parkinson’s
cause of Parkinson’s
dopaminergic cell loss
examples of memory impairments
- difficulty learning new info
- info retrieval deficits
- personal episodic memory impairment
which memory is more commonly impaired
declarative rather than procedural
what are language deficits
- list generation deficits
- word-finding difficulties
- verbal fluency deficits
- less complex sentence structure
what are visual recognition impairments
trouble recognizing familiar faces
what are spatial deficits
getting lost in familiar surroundings
in Alzheimer’s, which brain area shows clearest evidence for cell loss
The entorhinal cortex (link between neocortex and hippocampus)
what are other affected areas in Alzheimer’s
limbic cortex, inferior temporal cortex, and posterior parietal cortex
which areas are spared in Alzheimer’s
primary sensory and motor areas
what are the 2 main categories of LTM
- implicit (non-declarative)
- explicit (declarative)
what is implicit memory
Ability to recall a movement sequence or how to
perform some act or behavior