Research
Application of Current Theoretical Models to Bilingual Aphasia Rehabilitation Pt 3
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University:
Boston University -
Course:
CAS LX 250 | Introduction to Linguistics Academic year:
2019
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Views:
148
Pages:
16
Author:
larbiwxcvbn
What does this have to do with
Bilingual aphasia rehabilitation?
What are the implications of this research?
Cross-language parallel activation = Cross-language
generalization ?
Cross-language interference- Can competition be capitalized
in therapy?
Cognitive control of the language system- Train language or
cognition? A recent review of 13 studies on bilingual aphasia rehabilitation (FaroqiShah et al., 2010)
Except for one study with 30 participants (Junque et al., 1989), most
studies were case studies.
The good news:
Therapy provided in the L2 results in improved treatment outcomes in
the treated language.
Cross language transfer occurs in over half the participants.
Age of acquisition and language differences across studies do not
specifically influence treatment outcomes.
The bad news
Variability in treatment type and consequent treatment outcomes
Other confounding variables including time post onset and nature of
aphasia influence outcomes. Between and within language generalization
trained celery, cabbage improved (within-language)
trained celery and apio [direct translation] improved (between-language)
trained celery and repollo [cabbage] improved (between-language)
37 Between and within language generalization
X
X
trained celery, cabbage improved (within-language)
trained celery and apio [direct translation] improved (between-language)
trained celery and repollo [cabbage] improved (between-language)
39 What is the ultimate goal?
Predict treatment outcomes, between-language generalization
after rehabilitation in individuals with naming deficits
Simulation of language deficits (Keidel et al., 2010), modeling
rehabilitation of alexia (Welbourne & Lambon-Ralph, 2005, 2007),
naming deficits (Plaut, 1996) Age of
Acquisition
Language
exposure
Lesion site
Time post
onset stroke
Age
Language
severity
Language
Use
Education
History
Family
Proficiency
Impairment
in each
language
Language
Ability
Confidence
Degree of
semantic
processing
impairment
Degree of
naming
impairment
Degree of
semantic
syntactic
impairment
Language
Trained
Treatment
outcome? Patient study
17 Spanish-English adults with aphasia
Battery of standardized tests that examined
receptive/expressive language in Spanish and English
Language use questionnaire
10 weeks of naming therapy was administered.
2x/week, 2 hours Treatment protocol in behavioral study
Name picture
2. If incorrect, told correct name
3. Choose 6 correct features from 12
cards
4. Answer 15 yes/no questions about
the item
5. Named item again with feedback
Treatment always provided only in
one language (either
English/Spanish) and amount of
improvement examined:
1.
Within language: trained items &
semantically related words,
Between Language: direct
translations and semantic relations
TREATMENT
Long and green.
Found in produce
section
Vegetable
Eaten Fresh
Crunchy
“Celery”
L1
Nutritious
“Apio”
L2 Therapy video here
Three distinct groups of participants emerged:
Group 1 (A): model matched patient performance for both the trained and untrained language
Group 2 (B): model matched patient performance for the trained language only
Group 3 (C): model matched patient performance for untrained language better than the trained
language. Group 1 (A): Model matched patient performance
for both the trained and untrained language Group 2 (B): Model matched patient performance for the
trained language only Group 3 (C): model matched patient performance for
untrained language better than the trained language.
Three distinct groups of participants emerged:
Group 1 (A): model matched patient performance for both the trained and untrained language
Group 2 (B): model matched patient performance for the trained language only
Group 3 (C): model matched patient performance for untrained language better than the trained
language. Conclusions
Bilingual language processing is dynamic
Both languages are active in parallel
Language impairment in bilingual aphasia is influenced by pre-stroke
language proficiency and language control may be affected.
In terms of therapy:
1. Better understand the interaction between facilitation and interference
across a range of patients
2. We need to better understand the interaction between language and
cognitive control
3. Extend the computational model that accounts for facilitation and
interference to predict treatment outcomes
Application of Current Theoretical Models to Bilingual Aphasia Rehabilitation Pt 3
of 16
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