higher cortical function Flashcards
What layer of the cortex is there motor input to the cortex?
Layer 4: internal granular (site of thalamocortico fibers)
What layer of the cortex is there motor output?
Layer 5: internal pyramidal (large pyram cells, CS, CB)
The cortex is arranged in (vertical/horizontal) columns.
vertical columns
What areas are in the primary cortex?
Somatosensory (areas 1-3), Motor (area 4), visual (area 17), auditory (area 41)
definition: areas that integrate/coordinate information from the primary/secondary areas of the cortex to produce complex, meaningful interactions
association cortex
What areas are in the association cortex?
Motor (area 6), somatosensory (areas 5 and 7), visual (areas 18 and 19), auditory (areas 22 and 42)
definition: cortical pathway that connects all of the lobes
superior longitudinal fasciculus
definition: cortical pathway that connects the frontal, parietal, and occipital lobes
superior occipitofrontal fasciculus
definition: cortical pathway that connects the frontal, temporal, and occipital lobes
inferior occiptofrontal fasciculus
definition: cortical pathway that connects the frontal and temporal lobe
uncinate fasciculus
definition: cortical pathway that connects the cinguate with the parahippocampal gyrus
cingulum
What are the s/s of a left parietal lesion?
- R/L orientation
- acalculla
- agraphia
- limb apraxia
What are the s/s of a right parietal lesion?
- intentional hemineglect
- limb apraxia
definition: loss of the ability to perform single arithmetic calculations
acalculla
What temporal lobe lesion results in auditory recognition and learning problems?
superior temporal gyrus
What lesion results in prosopagnosia?
inferior temporal lesion
medial occipital lesion
definition: inability to recognize faces
prosopagnosia
What are the s/s of orbitofrontal lesions?
- irritation
- hyperkinesia
- promiscuity
- lack of social graces
- paranoia
- grandiosity
What are the s/s of prefrontal convexity lesion?
attentional neglect
definition: knowing the contralateral orbital space exists but does not care
attentional neglect
definition: lesion between Broca’s area and Wernicke’s area
conduction aphasia
definition: lesion of ALL the pathways in the Broca’s area and Wernicke’s area
global aphasia
What is the left hemisphere responsible for?
- language
- calculations
- right visual field
What is the right hemisphere responsible for?
- emotional content to language
- spatial abilities
- music abilities
- left visual field
