Young: Speech and Language Flashcards
Specialization of one hemisphere for a particular cognitive activity
lateralization
The ability to quickly and fluidly produce long sequences of phonemes
speech
Assigning meaning to arbitrary phoneme sequences
language
Compromise of essential language functions while leaving the sensory and motor components of verbal communication intact
aphasia
With aphasia, the emphasis on loss of the ability to produce or understand (blank) as opposed to realistic representations is important. The more (blank) the representation, the less understanding in the presence of an aphasia.
symbolic
All focal brain syndromes can be considered to be the result of what?
destruction of particular information processing center (ex: Broca’s area)
or
disconnection of inputs & outputs from such a center
(blank) aphasia is a classic example of a disconnection syndrome
conductive
3 common aphasic syndromes
Broca’s aphasia
Wenicke’s aphasia
Conduction aphasia
What have been very useful in establishing the lateralization of language?
experimental paradigms
Post-mortem studies of pts whose symptoms are well documented
Examination of pts w commissurectomies
Electrical stimulation of surgical pts
PET and functional MRI studies of intact pts
Reaction time studies in intact pts
These are all things that have been used to establish lateralization of language
This is an analogous region of the operculum
The function is not really understood
planum temporale
What makes the planum temporale interesting?
frequently observed asymmetrical gross development and patterns of cortical connectivity
The right hemisphere is involved in (blank) processing and (blank) elements of language
language; prosodic (rhythm and pattern of sound)
What are aprosodias?
defects in non-linguistic aspects of language associated w R hemisphere lesions
The manifestations of aprosodias largely parallel the (blank)
aphasias