cerebral cortex Flashcards
association cortex: list the functions of the association cortex in each cortical lobe, explain the types of deficits caused by lesions there, and compare the attributes of the primary and association cortex
function of visual association cortex in occipital lobe
analyses different attributes of visual image in different places
what is analysed along ventral pathway of visual association cortex in occipital lobe
form and colour (what)
what is analysed along dorsal pathway of visual association cortex in occipital lobe
spatial relationships and movement (where)
what do lesions in occipital lobe affect, using prosopagnosia as example
specific aspects of visual perception; lesion of visual posterior association area (fusiform gyrus), losing ability to recognise familiar faces or learn new faces
function of posterior patietal association cortex
creates spatial map of body in surroundings, from multi-modality information
what might injuries in parietal lobe cause, including effect of Alzheimer’s disease
disorientation, inability to read map or understand spatial relationships, apraxia, hemispatial neglect (if stroke in area, so don’t see one side of image); Alzheimer’s disease progresses through cortex, and when it hits parietal cortex, disorientation occurs
function of temporal lobe
language, object recognition, memory (hippocampus basis for new memory formation), emotion
what might injuries in temporal lobe lead to, including what is done to attempt to cure epilepsy
agnosia, receptive aphasia, anterograde amnesia (can’t lay down new memories); bilateral resection of anterior medial temporal lobe structures to try to cure epilepsy
function of frontal lobe
judgement, foresight, personality, appreciation of self in relation to world
what might injuries in frontal lobe lead to
deficits in planning, inappropriate behaviour (self-control is hugely impaired), disorganised behaviour, diminished attention span and concentration
3 features of association cortices (symmetry, organisation, function)
less predictable function, not organised topographically, left-right symmetry weak or absent
functions of prefrontal association cortex
behaviour, personality changes
function of motor association area
planning
function of sensory association area
different modalities
what is primary visual cortex surrounded by
visual association area