Auditory processing in aphasia

Question 1

What part of the the Patterson and Shewell model looks at auditory processing (1987)?

Answer 1

top left

Question 2

describe Patterson and Shewell model (1987) for auditory processing

Answer 2

• spoken word
• acoustic analysis (identifies and discriminates speech sounds)
• auditory input lexicon (store of auditory forms of words, recognises words as words)
• semantic system (store of meanings of words)

Question 3

What variables affect processing?

Answer 3

• imagebility
• frequency
• word length

Question 4

What are the tests of auditory input processing?

Answer 4

• minimal pair judgements
  -auditory lexical decision
• spoken word to picture matching
• spoken synonym judgements

Question 5

What are the tests for acoustic analysis?

Answer 5

• minimal pair judgments
• present string of phonemes in pairs
• 50% success = chance
• maximal or minimal pairs
• palpa subtests 1-4

Question 6

What are the tests for auditory input lexicon?

Answer 6

• auditory lexical decision
• present words and non-words auditorally
• 50% = chance
• manipulate difficulty with choice of words
• palpa 5

Question 7

What are the tests for access to semantics?

Answer 7

• spoken word to picture matching
• present array of pictures
• ask person to select one
• manipulate relationship between target and distractors
• Palpa 47
• 25% CAT, 20% palpa

Question 8

What are the tests for accessing semantics?

Answer 8

• spoken synonym judgements
• test of lower frequency/imagebility items
• present pairs of words on spoken form
• chance = 50%

Question 9

What assessments are there for auditory processing in aphasia?

Answer 9

• CAT
• PALPA
• Pyramids and Palm trees

Question 10

What are the routes to repitition?

Answer 10

word repition
- AA-AIL-SS-POL-phon
- AA-AIL-POL-phon
- AA-phon
non-word repition
- AA-phon

Question 11

What are the tests for repitition?

Answer 11

• Palpa 7 syllable length
• palpa 9 - imageability x frequency
• palpa 8 - sublexical non-word repitition

Question 12

What are the types of auditory processing deficits in aphasia?

Answer 12

• word sound deafness
• word form deafness
• word meaning deafness
• central semantic impairment
• specific semantic impairment

Question 13

Describe word sound deafness

Answer 13

• damage to acoustic analysis system
• hear words and sounds
• recognise language
• recognise different voices and differences between languages
• normal non-verbal sound recognition
• do not understand words
• cannot make lexical decisions
• cannot repeat through any route
• comp improved by slowed speech, context cues, exaggerated intonation, lip reading
• vowels may be more easily discriminated than consonant vowel combos

Question 14

Describe word form deafness

Answer 14

• damage to auditory input lexicon
• impaired auditory lexical decision
• good performance on minimal pairs
• good repition without understanding via sub-lexical processes
• impaired access to semantics

Question 15

Describe word meaning deafness

Answer 15

• damage to processes corresponding betweem input phonology and meaning
• difficulties in auditory input semantic tasks
• good auditory minimal pairs and auditory lexical decision
• performance on written tasks good (different from central semantic impairment)
• good repitition of words and non-words

Question 16

Describe central semantic impairment

Answer 16

• damage to semantic system
• performance in minimal pairs and lexical judgements intact
• accessing semantics from written words also impaired

Question 17

Describe specific semantic impairment

Answer 17

• damage to semantics may affect certain subgroups of items
  -show imageability effect