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22 Cards in this Set
- Front
- Back
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Superior hemianopia
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Infarct from contralateral inf optic radiations
Associated w/ hemiparesis contralat to lesion |
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Temporal crescent sparing VF defect
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Ipsilateral Posterior occ lobe lesion
Monocular field defect as 30 deg temp from ipsi nasal retina only |
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Temporal crescent scotoma
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Ipsi Anterior occ lobe lesion
Monocular field defect as 30 deg temp from ipsi nasal retina only |
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Unformed hallucinations
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Occipital lobe
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Formed hallucinations
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Temporal lobe
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Seizures
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Temporal lobe
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Agnosia
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Parietal lobe
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Pie on the floor
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Parietal lobe
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Pie in the sky
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Temporal lobe
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Right/left confusion
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Parietal lobe
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Color perception
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Fusiform gyrus (temporal lobe—near occipital)
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Bilateral central scotomas
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DDx: alcohol, Lebers Hered. ON (LHON), bilat occip infarcts
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Supranuclear gaze palsy (DDx)
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Parkinsons, dorsal midbrain syndrome (pineal tumor), ataxia-telangiectasia
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INO
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Cant adduct + contralat abduct nystagmus
Ipsi MLF |
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Fast OKN abnormalities
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Frontal lobe
i.e. contralateral saccade |
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Slow OKN abnormalities
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Parieto-occipital (mostly parietal)
Drum rotates toward the lesion i.e. ipsilateral gaze |
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Facial recognition
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Fusiform gyrus (temporal lobe—near occipital)
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CN4 lesion/palsy
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Increased vertical fusional amplitudes demonstrates chronic/congenital d/o (normal=3-5PD)
Longest intracranial course-->prone to injury in closed head trauma |
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CN6 lesion/palsy (fascicular)
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Abduction deficit
In cavernous sinus, not protected-->prone to stretch w/ inc ICP |
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CN6 lesion/palsy (nuclear or earlier (i.e.PPRF))
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Ipsi gaze palsy OU (interneurons for contralat MR subnucleus via MLF)
In cavernous sinus, not protected-->prone to stretch w/ inc ICP |
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Orbital apex ischemia
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Isolated sup CN3 palsy (more posterior, sup & inf CN3 are 1)
Decreased ispi upgaze & ptosis **paradoxical ptosis of normal eye if examiner holds bad lid up as less stimulus required to raise previously ptotic lid **apparent contral upper lid retraction to counter ptotic lid |
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Vertebral-basilar insufficiency
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Sudden skew deviation, ataxia, imbalance, vomiting
MRI/A of brainstem, cblm, vert/basilar arteries |
