Cerebral cortex Flashcards
to/from cortex and subcortical structures and spinal cord
projection fibers
connect homologous areas of R and L hemisphere
commissural fibers
connect cortical regions within one hemisphere
association fibers
primary sensory areas receive sensory info from
thalamus
discriminates shape, texture, or size of objects
primary somatosensory
conscious discrimination of loudness and pitch of sounds
primary auditory
distinguishes intensity of light,shape, size, and location of objects
primary visual
discriminates among head positions and headmovements
primary vestibular
stereognosis and memory of the tactile and spatial environment
secondary somatosensory
analysis of motion, color; control of visual fixation
secondary visual
classification of sounds
secondary auditory
complex behavior organized; integration and interpretation of sensations, processing of memory, emotions, personality, executive functions
association cortices
executive function
self-awareness (avoid socially inappropriate behavior)
dorsolateral prefrontal association
sensory integration
understanding language and spatial relationships
parietotemporal association
impulse control
personality
ventral; regulates mood and affect
medial: regulates emotion and reaction to emotion
ventral and medial dorsal prefrontal association
executive function (goal-oriented behavior)
deciding on a goal
executing a plan
monitoring the execution of the plan
association cortices
L hemisphere dominant for 94% of people
communication
L: comprehension of spoken language
R: interpreting nonverbal signals (comprehension of spatial relationships)
Wernicke’s area
L: instruction for language output; plan movements to produce speech
R; instruction fro producing nonverbal communication (emotional gestures, intonation of speech)
Broca’s area
communication loop
primary motor cortex secondary auditory cortex Wernicke's area Subcortical connections Broca's area Oral and throat region of sensorimotor cortex
Loss of tactile localization and conscious proprioception
primary somatosensory
Loss of localization of sounds
primary auditory
homonymous hemianopia
primary visual
change in awareness of head position and movement
primary vestibular