Cerebrum Stuff Flashcards
Damage to Broca’s area also causes what other clinical signs?
Right hemiparesis
apraxia of the L limb and face
(due to proximity to motor cortex)
Wernicke’s area damage also causes what other clinical signs?
R homonymous hemianopsia
Conduction disorder also presents with what other clinical signs?
R hemisensory deficit
apraxia of all limbs and face
Global disorder also presents with what other clinical signs?
R hemiparesis
R hemisensory deficit
R homonymous hemianopsia
spastic hemiparesis = damage to?
precentral gyri of frontal lobe (contralat), F1
Apraxias (even with normal muscle strength) = damage to?
premotor gyri (F2),
damage = eyes fixed towards damaged side, but if overactive, eyes move away, also mediates saccadic movements
frontal eye fields (F3)
anhedonia when damaged BILATERALLY, otherwise pleasure center
ant cingulate gyrus (F4)
Preseverance and inattentiveness can result if damaged BILATERALLY
Dorsolateral frontal cortex (F5)
Inappropriate social behavior when damaged, area of personal decision making
pre-frontal cortex (F6)
damage to post-central gyrus
anesthesia/ dysesthesia to affected area–contains primary somatosensory cortex
tactile agnosia/astereoagnosia
superior parietal lobule (ant)–contains 2nd-ary somatosensory cotex
“neglect”
sup. parietal lobule (rest of it)
can’t do puzzles or fitting shapes into right holes
inferior parietal lobule
superior and inferior contralateral quadranopsias
primary visual cortex of occipital lobe
CONTRALAT visual agnosia
seconary and tertiary visual cortices of occipital lobe
CONTRALAT color blindness
V4 of occipital lobe
CONTRALAT motion loss (strobe like vision)
V5 of occipital lobe
inability to do pursuit eye movements to CONTRALAT side (so eyes fixed on side of lesion)
Middle Temporal (or MT) cortex (in lateral occipital lobe)
can’t hear tone/intensity of sound
primary auditory cortex of temporal lobe
can’t hear pitch/intonations
secondary auditory cortex of temporal lobe
anomia (“tip of tongue phenomenon”)
LEFT middle/inferior temporal gyri
prosopagnosia
RIGHT middle/inferior temporal gyri
limbic system consists of
parahippocampal gyrus, hippocampus (long term–>short term memory), mammilary bodies, anterior nucleus of thalamus+cingulate gyrus
ante-retrograde amnesia
damage to limbic system
center for unpleasant emotion like fear and anxiety (opposite in terms of function to ant. cingulate gyrus)
amygdala
