Behavioral neurology I Flashcards
where is new verbal memory processed?
medial temporal lobe left
where is new visual memory processed?
medial temporal lobe right
where is semantic memory processed?
lateral temporal
where is face / object recognition processed?
posterior temporal
where does emotional processing occur?
amygdala
disruption of the papez circuit results in what condition?
amnesic syndromes (severe memory disturbance)
hypoxia, HSV, alzheimer disease, PCA strokes, and surgery can damage what part of the papez circuit?
medial temporal lobes
korsakoff syndrome, thalamic strokes, and surgery can damage what part of the papez circuit?
diencephalon
ACA aneurysm bleed or clipping can damage what part of the papez circuit?
basal forebrain
what locations are important for encoding and retrieval of memory?
hippocampus / MTL
what location is important for metamemory (executive control over memory apparatus)?
dorsolateral prefrontal cortex
definition: confabulations
inability to distinguish a true memory from a false memory or from a memory inappropriate for the context
how can you test semantic memory at the bedside?
- ask about a well known concept that has unique features
- ideally independent of verbal abilities
the parietal lobe is responsible for what 3 major functions?
- cortical sensation
- praxis (dominant lobe)
- spatial orientation (non-dominant lobe)
which brain lobe (lesion) is responsible for
- praxis
- alexia
- agraphia
- acalculia
- left-right confusion
- finger agnosia
dominant parietal lobe
akinetic mutism, withdrawal, lack of initiative, poverty of speech
MDPC (frontal lobe)
impaired abstraction and logical thinking, poor planning, poor judgment, impaired working memory and attention, poor memory organization
DLPC (frontal lobe)
impulsive and antisocial behavior (disinhibition, hypersexuality, compulsions, breaking of social conventions), high risk behavior, stimulus boundness, unstable mood
OFC (frontal lobe)
the subcortical structures are the _______ and the ________
white matter and basal ganglia
which area decoding phoneme into meaning?
wernicke’s area
a conduction aphasia is a result of a lesion to the _________
arcuate fasciculus
definition: apraxia
- loss of ability to perform a learned, familiar, purposeful motor act despite having the desire and the physical ability to perform the movements
- can perform an action but the pattern for what you are supposed to do does not work
where is praxis located in the brain?
dominant parietal lobe
what is prosopagnosia?
face blindness
