Higher Order Functions - Left Hemisphere/Language Flashcards
unimodal association cortices is ___________ and _____________.
modality specific
unidirectional
Unimodal includes what cortices?
motor association cortex (premotor and supplemental motor area)
somatosensory association cortex
visual association cortex
auditory association cortex
heteromodal is found in what 2 locations in the cortex?
frontal lobes
Parieto-occipitotemporal junction
heteromodal includes ________ mental functions and _________ connections
higher-order
bidirectional (motor, sensory, limbic)
left hemisphere includes:
analytical thought
logic, reasoning
language centers
right hemisphere includes:
perceptual integration imagination insight intuition creativity emotional drive
what is the most common asymmetry in the brain?
handedness
fMRI suggest although each hemisphere control simple movements of contralateral limbs, BUT highly skilled complex motor tasks are programmed by which hemisphere?
dominant hemisphere
language centers are predominantly in what hemisphere
left
left hemisphere is dominant for language in ____ of right handers, but also _______ of left handers
over 95%
60-70%
what is something significant seen with left-handers in regards to their language centers?
bilateral language representation so these individuals are believed to recover from language impairments quicker than right-handers
Broca’s area is in charge of what in regards to language
neural representation for words are converted into word output (i.e. speech output)
Wernicke’s area is in charge of what in regards to language
neural representation for sounds are converted into word output (i.e. language comprehension)
how to Broca’s and Wernicke’s areas communicate with each other
arcuate fasciculus
what are the 4 language areas of the brain
inferior lateral primary motor cortex
frontal lobes
supra marginal gyrus and angular gyrus (parietal and temporal lobes)
visual cortex, visual association cortex