Higher Cortical Functioning
Terms
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- Broca's Area #44
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I: Arcuate fasciculus
O: Premotor cortex
L: Broca's aphasia (comprehending, non-fluent) - Wernicke's Area #22
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I: Primary auditory cortex
O: Arcuate fasciculus
L: Wernicke's aphasia (non-comprehending, fluent) - Arcuate fasciculus
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I: Wernicke's area
O: Broca's area
L: Conduction aphasia (comprehending, fluent, defect in repetition) - Primary auditory cortex #41
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I: Medial geniculate nucleus
O: Auditory association areas
L: Improper localization of sound - Auditory association area #42
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I: Primary auditory cortex
L: Word deafness (unable to connect sounds with meaning) - Motor Cortex #4
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I: VL, premotor area
O: Corticospinal pathway
L: CONTRA upper motor neuron signs - Premotor area #6
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I: VL
O: Motor cortex
L: CONTRA upper motor neuron signs - Frontal eye fields #8
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I: Where visual stream (dorsal)
O: Contra PPRF
L: Eyes look toward the lesion (with siezure, eyes look away) - Lateral prefrontal cortex
- L: Loss of executive function, working memory
- Primary somatosensory area #3,1,2
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I: VPL, VPM
O: Secondary somatosensory areas
L: Loss of CONTRA sensation (DC and STT) - Secondary somatosensory area #5,7,40
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I: Primary somatosensory cortex
L: Astereognosis, Agraphesthesia - Parietal association areas
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Dominant lesion: classical apraxia (can't brush teeth, dress self)
Non-dominant lesion: construction apraxia - Primary visual cortex #17
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I: Lateral geniculate nucleus (via optic radiations)
O: Visual association areas
L: CONTRA homonymous hemianopsia with macular sparing - Visual association areas #18,19
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I: Primary visual cortex
O: Dorsal where stream, Ventral what stream - Where stream
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I: Visual association areas #18,19
O: frontal eye fields
L: Decreased perception of motion, decreased ability to track a moving object and decreased ability to voluntary gaze towards a moving object - What stream
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I: Visual association areas #18,19
L: Color agnosia (can distinguish, but can't name colors - bilateral); Prosopagnosia (defective facial recognition - bilateral lesion of fusiform gyrus); Pure dyslexia (visual agnosia - can't read but speech intact, lesion must be in dominant hemisphere and must include part of corpus callosum) - Parietal, occipital, temporal association cortex
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I: Pulvinar nucleus; info from POT cortex
Dominant lesion: dyslexia, dysgraphia, dyscalculia (reading, writing, 'rithmetic)
Non-dominant lesion: defective visuospatial skills, part-to-whole processing