language 1 Flashcards
perisylvian language arc
auditory nerves (VIII) pons, A1 (heschels/broadmans 41), A2 (wernickes, 22), acruate fasiculus, Brocas (44), motor areas (face and speech)
damage to auditory aparatus, auditory nerve or heschels gyrus
hearing loss/ deafness or cortical deafness
damage to wernickes area - simple
langauge comprehension (perceptive language problems)
damage to brocas area - simple
language production problems
acruate fasiculus
conductive aphasia, repitition difficulties
4 core skills of language
categorization: qualities go to certain concepts to make percepts so we can retrieve info later
labeling categories: attach words to diff concepts to help stimulate words about concept
sequencing behavior: order of speech delivery, left hemisphere helps to order vocal movements
mimicry:fosters language developement in infants
wernicke geschwind model
- comprehension extracted from sounds in wernickes
- passed over to arcuate fasiculus
- to brocas area to be articulated as speech
dual language pathway
dorsal- connects wernickes with dorsal aspects of brocas, important for regulation of phenomes
ventral- connects wernickes with ventral aspects of brocas and temporal areas to other areas of frontal lobe (semantics)
transcranial magnetic stimulation uses
interferes with speech and neuronal function
primes nuerons to enhance reaction times
evaluates connections b/w brain regions
used to map speech regions in brain
classic view of localization of language
left: verbal right: non verbal
left: parts/details, learned information, explicit language and grammar/syntax
right: global/hollistic, novel information, implicit language, complex understanding
nouns in the brain
21, 37, 20
subcortical structures and language
basal ganglia, thalamus - pulvinar and ventrolateral, cerebellum
disorders of language
aphasia: was established but person lost ability to communicate
agraphia: lose capacity to communicate with written language
alexia: lose capacity to read
apraxia: difficulty with production of speech
anomia: recalling names
agrammitism: lose acces to knowledge of grammar rules
what are aphasias
partial or total loss of ability to articulate ideas or comprehend spoken or written language resulting from damage to brain
3 types of aphasias
fluent: wernickes/conduction fluent speech but difficulties in comprehension or repitition
nonfluent: brocas difficulty articulating but good comprehension
global: difficulties producing and understanding speech