7.1 Cognition and Dementia Flashcards
located near the modality they serve (vision, sensory, motor), unimodal
first order association cortex
inputs from several modalities
multimodal association areas
decisions and executive function
anterior association area
integrates sensory input
posterior association area
spatial recognition, relationships
dorsal perceptual path
object recognition, faces
ventral perceptual path
normal score is 30 points, not great for non-dominant hemisphere (patterns) and executive
mental status exam
aphasia, affects Broca’s or Wernicke’s areas or surrounding cortex
focal language encephalopathy
chronic cell death (idiopathic), commonly bilateral
degenerative focal encephalopathy
several areas affected, alzheimers
diffuse encephalopathy
semantic area, decodes words
Wernicke’s
fluent speech (nonsense), can’t understand commands
wernicke’s aphasia
surrounding cortex damage, fluent speech and repetition, poor understanding
transcortical sensory aphasia
converts intent into words
broca’s area
non fluent speech, can’t repeat, intact understanding of words
broca’s aphasia