auditory phonological analysis functions: what does it start with? what does it recognize?
- begins with soundwave
- recognizes if input is speech or not
phonological input lexicon: what does it store? what does it recognize?
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- store of all sounds and words we know
- recognizes if word is in your language or not (NO MEANING)
semantic system function (1)
- meaning of all words we know
PRELEXICAL PROCESSING: which sides of the brain is auditory analysis carried out by for complex sounds vs for speech?
- complex sounds: bilateral
- speech: left lateralization
T or F: the motor cortex does not light up during auditory comprehension
false!
______ information is integrated with auditory information at an early stage of processing.
lip-reading
LEXICAL PROCESSING: what is neighbourhood density?
some words may have many other phono similar words (neighbours). others are more distinctive.
why might longer words improve comprehension in damaged systems?
longer words = less neighbourhood density
what does PALPA stand for?
psycholinguistic assessments of language processing in aphasia
how many ax tasks does PALPA contain?
what does it assess (2)?
- 60 tasks (SLP picks and chooses)
- language processing (more)
- language use (less – pair with functional ax’s!)
what steps of the PALPA occur for word recognition? (3)
- speech [input]
- auditory phonological analysis
- phonological input lexicon
what steps of the PALPA occur for word recognition AND comprehension? (4)
- speech [input]
- auditory phonological analysis
- phonological input lexicon
- semantic system
how does: GRAMMATICAL CATEGORY influence comprehension?
functors are generally most difficult to comprehend
how does: SEMANTIC CATEGORY influence comprehension?
some evidence that diff categories are more difficult to comprehend than others
how does: AGE OF ACQUISITION influence comprehension?
earlier acquisition = easier to recall
how does: IMAGEABILITY influence comprehension?
+imageability = +comprehension
how does: OPERATIVITY influence comprehension?
+ability to operate target = +comprehension
how does: WORD LENGTH influence comprehension? (2)
- shorter generally = easier
- but longer may have less neighbours
define pure word deafness (aka word sound deafness). how does this affect speech, reading, and writing?
- inability to understand, repeat, or write words heard from dictation despite normal audiometry
- other domains generally not sig impaired
hypothesized impairment PALPA location for pure word deafness? neurological impairment?
- auditory phonological analysis
- bilateral temporal damage
what kind of tasks/strategies would you use for someone with pure word deafness? (3)
- minimal pair judgements
- pointing to target words among distractors
- allow lip-reading
define word form deafness. how does this affect minimal pairs discrimination and written lexical decisions?
- relatively spared aud phono analysis but impaired auditory lexical decisions (i.e., is this a word in my language?)
- other two areas spared
define word meaning deafness. which abilities are spared?
inability to understand words heard from dictation (syntax) but spared ability to repeat (without comprehending) or write words heard from dictation
hypothesized impairment PALPA location for word meaning deafness?
connection bw phono input lexicon and semantic system
