On The Nature of the Selective Impairment of Verb and Noun Retrieval

Luzzatti, Claudio; Raggi, Rossella; Zonca, Giusy; Pistarini, Caterina; Contardi, A; Pinna, Gian Domenico

doi:10.1016/s0010-9452(08)70624-5

Cited by 30 publications

(16 citation statements)

References 5 publications

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“…This then raises the question of the proportions of people with aphasia who show relative verb over noun, or noun over verb impairments. This was the aim of the comprehensive study conducted by Luzzatti, Raggi, Zonca, Pistarini, Contardi, and Pinna (2001). They tested 58 Italian people with mild-to-moderate aphasia on an array of object-and action-naming tasks.…”

Section: Verbs and Nouns: Patterns Of Impairments In Aphasiamentioning

confidence: 99%

“…When patients' language is governed by frequency (as it is, for example in semantic dementia-progressive fluent aphasia), therefore, an apparent verb sparing can occur because light verbs are so much more frequent than any types of noun. However, as notes above, some studies have controlled for variables such as frequency and imageability, and have still found word class effects (Luzzatti et al, 2001).…”

Section: Verbs and Nouns: Patterns Of Impairments In Aphasiamentioning

confidence: 99%

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Towards theory‐driven therapies for aphasic verb impairments: A review of current theory and practice

2006

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Background: This review is intended for both theoretically and clinically motivated audiences with an interest in aphasic verb impairments. Aims: Building from previous reviews, our aim is to provide a concise summary of the relevant theoretical research and perspectives on verbs, and from this theoretical foundation to explore which aspects have been incorporated and tested in therapy studies. Main Contribution: In the theoretical domain, the review first considers the patterns of verb and noun impairments in aphasic syndromes. Second, an overview of the linguistic differences between verbs and nouns is provided, differences that occur at various levels of linguistic analysis: phonological, morphological, semantic, and syntactic. This is followed by a detailed account of the psycholinguistic perspective on verb-noun differences. Specifically, this section examines the role of variables such as imageability and frequency, and the issue of depiction of actions in static picture versus dynamic video format. Evidence from neuroimaging studies as well as neurodegenerative conditions such as semantic dementia is also reviewed. Finally, the psycholinguistic account further discusses the question of whether verbs (and nouns) serve as primary ordering principles in the cognitive architecture of language processing or whether they should be more accurately viewed as points on an overarching psycholinguistic continuum. Also within the psycholinguistic discussion, event perception is described as a theoretical account with implications for verb processing. Despite the importance of verbs in their pivotal role in connected speech, there is a very limited body of literature on verb therapies and only a small number of the theoretical issues/perspectives have penetrated approaches to treating verb impairments. Ten published papers are described. Two of these directly compare verb and noun therapies, reflecting the many comparisons of noun vs verb impairments in the theoretical literature. The remaining eight consist of purely verb-focused therapies, which also examined the effects of increased verb retrieval skills on related sentence production (reflecting the pivotal role of verbs in connected speech). These eight studies are subdivided between four that targeted verb retrieval only and four that also investigated aspects of verb argument structure and sentence production. Conclusions: The general discussion notes possible new approaches to the treatment of verb deficits that arise from the many factors noted in the theoretical literature which are yet to be fully explored in therapy studies.

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Section: Verbs and Nouns: Patterns Of Impairments In Aphasiamentioning

confidence: 99%

Section: Verbs and Nouns: Patterns Of Impairments In Aphasiamentioning

confidence: 99%

Towards theory‐driven therapies for aphasic verb impairments: A review of current theory and practice

2006

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“…Agrammatic patients with “pure” category-specific aphasia consistently omit or fail to produce words in some lexical categories but not others, although the spared versus impaired lexical categories vary from patient to patient, with some patients producing, e.g., nouns but not verbs, and others producing verbs but not nouns (see [15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33]).…”

Section: Introductionmentioning

confidence: 99%

Compensating for Language Deficits in Amnesia I: H.M.’s Spared Retrieval Categories

et al. 2013

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Three studies examined amnesic H.M.’s use of words, phrases, and propositions on the Test of Language Competence (TLC). In Study 1, H.M. used 19 lexical categories (e.g., common nouns, verbs) and one syntactic category (noun phrases) with the same relative frequency as memory-normal controls, he used no lexical or syntactic category with less-than-normal frequency, and he used proper names (e.g., Melanie) and coordinative conjunctions (e.g., and) with reliably greater-than-normal frequency. In Study 2, H.M. overused proper names relative to controls when answering episodic memory questions about childhood experiences in speech and writing, replicating and extending Study 1 results for proper names. Based on detailed analyses of the use (and misuse) of coordinating conjunctions on the TLC, Study 3 developed a syntax-level “compensation hypothesis” for explaining why H.M. overused coordinating conjunctions relative to controls in Study 1. Present results suggested that (a) frontal mechanisms for retrieving word-, phrase-, and propositional-categories are intact in H.M., unlike in category-specific aphasia, (b) using his intact retrieval mechanisms, H.M. has developed a never-previously-observed proposition-level free association strategy to compensate for the hippocampal region damage that has impaired his mechanisms for encoding novel linguistic structures, and (c) H.M.’s overuse of proper names warrants further research.

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“…Their lexical retrieval abilities on nouns and verbs were tested by means of a picture naming task of 40 actions and 30 objects. Nouns and verbs were matched for word frequency, length and age of acquisition (see Luzzatti et al, 2002). Patients were selected according to their performance on this task and their aphasia type in order to represent the major types of noun-verb dissociation observed so far, i.e., noun-impaired fluent (n=3), verbimpaired fluent (n=2) and verb-impaired non-fluent patients (n=2).…”

Section: Methodsmentioning

confidence: 99%

Noun–verb dissociation in aphasia: Type/token differences in the analysis of spontaneous speech

et al. 2006

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On The Nature of the Selective Impairment of Verb and Noun Retrieval

Cited by 30 publications

References 5 publications

Towards theory‐driven therapies for aphasic verb impairments: A review of current theory and practice

Towards theory‐driven therapies for aphasic verb impairments: A review of current theory and practice

Compensating for Language Deficits in Amnesia I: H.M.’s Spared Retrieval Categories

Noun–verb dissociation in aphasia: Type/token differences in the analysis of spontaneous speech

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