Language Flashcards
speech=
phonation and articulation
language-
communication by means of symbols (not just audible sounds)
Left cerebral hemisphere
is dominant in almost all right handed ppl and half of left handed ppl
what vascular territory are the major language centers located in
MCA
define aphasia
d/o of previously acquired language ability d/t a lesion in a critical language center
define fluency
ease, facility, and quantity of speech regardless of content or meaning
define comprehension
should be evident when verbal or written commands are followed
Repetition
is intact only if a phrase from examiner is perfectly repeated by the pt
-imperfect repetition occurs with a lesion in either perisylvian language ctr (B or W area) or connecting arcuate fasciculus
define paraphasia
an abnml word or syllable substitution
- more common with W’s aphasia
- severe form=neologism=nonsensical/foreign sounding word
Brocas aphasia
- post inf FRONTAL lobe in dominant hemisphere
- fluency is very impaired
- imperfect repetition
- good comprehension=frustrated pt
Wernicke’s aphasia
- post sup TEMPORAL lobe in dominant hemisphere
- fluency preserved
- imperfect repetition
- poor comprehension
Conduction aphasia
- lesions of arcuate fasciculus (pathway connecting B and W)
- fluency good (like W), mild comprehension, imperfect repetition
Global aphasia
- extensive lesion that damages entire perisylvian language region
- nonfluent, imperfect repetition, poor comprehension
- severe hemiplegia
alexia
impairment of reading when visual cortex is disconnected from language centers critical for reading
agraphia
when a lesion disconnects the motor cortex for the dominant hand from language centers critical for writing
