Representation of Linguistic Rules in the Brain: Evidence from Training an Aphasic Patient to Produce Past Tense Verb Morphology

Weinrich, Michael; Boser, Katharina; McCall, Denise

doi:10.1006/brln.1999.2141

Cited by 27 publications

(24 citation statements)

References 28 publications

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“…The high accuracy in selecting temporal adverbs and the low accuracy in selecting verb forms suggests that the specific difficulty lies in verb form retrieval rather than selecting tense diacritics. Similar conclusions were drawn by Tyler, Behrens, Cobb, and Marsel-Wilsonn (1990) after studying the word monitoring data for a patient with non-fluent aphasia and by Weinrich and colleagues after conducting treatment studies where tense production was trained (Weinrich, Boser, & McCall, 1999;Weinrich, Shelton, Cox, & McCall, 1997).…”

Section: Morphological Affixationsupporting

confidence: 68%

Verb inflections in agrammatic aphasia: Encoding of tense features☆

Faroqi‐Shah

Thompson

2007

Journal of Memory and Language

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Across most languages, verbs produced by agrammatic aphasic individuals are frequently marked by syntactically and semantically inappropriate inflectional affixes, such as Last night, I walking home. As per language production models, verb inflection errors in English agrammatism could arise from three potential sources: encoding the verbs' morphology based on temporal information at the conceptual level, accessing syntactic well-formedness constraints of verbal morphology, and encoding morphophonological form. We investigate these aspects of encoding verb inflections in agrammatic aphasia. Using three sentence completion experiments, it was demonstrated that production of verb inflections was impaired whenever temporal reference was involved; while morphological complexity and syntactic constraints were less likely to be the source of verb inflection errors in agrammatism. These findings are discussed in relation to current language production models. KeywordsMorphology; Broca's aphasia; Language; Verb; Inflection; Models of sentence production Aphasia is an impairment in producing and/or comprehending language resulting from acute brain injury such as a cerebrovascular accident. Agrammatic speech is commonly associated with the clinical syndrome of Broca's aphasia, and is frequently characterized by ill-formed sentences, reduced syntactic complexity, a paucity of verbs, and grammatical morpheme errors. Production of both free grammatical morphemes and inflectional morphemes can be impaired in agrammatic aphasia. Across most languages that have been studied, verbs produced by agrammatic aphasic individuals are frequently marked by syntactically and semantically inappropriate inflectional affixes in a variety of tasks including spontaneous speech,

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Section: Morphological Affixationsupporting

confidence: 68%

Verb inflections in agrammatic aphasia: Encoding of tense features☆

Faroqi‐Shah

Thompson

2007

Journal of Memory and Language

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“…The present data extend the range of such representations to include not only tense (Weinrich et al, 1999) but passive constructions with conjoined subjects and objects. We do not take a position here regarding whether functional level representations for active and passive voiced sentences are equivalent (see Bock and Levelt, 1994, for a discussion on this point), but note that in either case, both CM and EA can produce both active and passive constructions in C-VIC to describe accurately pictures presented to them.…”

Section: Discussionsupporting

confidence: 53%

“…Training involved practice constructing C-VIC tense marked sentences and then producing spoken English equivalents. After training, EA demonstrated significant improvements in English verb retrieval and production of correct tense morphology (Weinrich et al, 1999).…”

Section: Trainingmentioning

confidence: 98%

“…In addition, EA has been involved in a number of studies using C-VIC since 1993 Weinrich et al, 1999).…”

Section: Subjectsmentioning

confidence: 99%

“…In a previous study, we demonstrated that patients with severe expressive aphasias can relearn to produce correct English past-tense verb morphologies by training on C-VIC, an iconic computer-based communication interface (Weinrich, Boser, & McCall, 1999). To determine the extent to which such patients can relearn other morpho-syntactic operations, we developed a training procedure using C-VIC to retrain patients in producing English passive voiced sentences.…”

Section: Introductionmentioning

confidence: 99%

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