Mental Representation of Events: An Investigation of Agrammatic Aphasia

Payne, M. Carr; Faroqi‐Shah, Yasmeen

doi:10.1016/j.sbspro.2013.09.076

Cited by 1 publication

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“…The first is a divergence between speaking time and reference time for past and future, but not present tense ( Table 1 , [ 44 , 45 , 47 , 57 ]). Additionally, neurologically healthy speakers process sentences referring to ongoing events faster than completed or hypothetical events [ 50 – 55 ]. And developmentally, children acquire past tense later than present tense [ 76 , 77 ] and show a past tense disadvantage in specific language impairment [ 78 ].…”

Section: Discussionmentioning

confidence: 99%

“…It is also crucial to establish whether a disadvantage for temporally complete events is a general pattern found across several populations or is a core characteristic of agrammatic aphasia, because a parsimonious theory of agrammatism really needs to account for symptoms that are unique to the condition. Data from other populations indicate that the disadvantage for past events is not unique to agrammatism and is found in healthy adults and children, fluent aphasia, and specific language impairment [ 29 , 50 – 55 , 76 – 78 ].…”

Section: Discussionmentioning

confidence: 99%

“…As for tense processing, monitoring for a word following a short paragraph was faster when the target word occurred in sentences with present tense compared to past tense in Spanish [ 54 ]. The interaction between tense and aspect was examined using six sentence types (past and present tense in simple, progressive, and perfect aspects) in a sensibility judgment task [ 55 ]. Response times were influenced by verb aspect, with the fastest responses to simple aspect ( …closed/closes the drawer ) and slowest responses to perfectives (…had closed/has closed the drawer), but there was no effect of verb tense on response times.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Production of Verb Tense in Agrammatic Aphasia: A Meta-Analysis and Further Data

Faroqi‐Shah

Friedman

2015

Behavioural Neurology

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In a majority of languages, the time of an event is expressed by marking tense on the verb. There is substantial evidence that the production of verb tense in sentences is more severely impaired than other functional categories in persons with agrammatic aphasia. The underlying source of this verb tense impairment is less clear, particularly in terms of the relative contribution of conceptual-semantic and processing demands. This study aimed to provide a more precise characterization of verb tense impairment by examining if there is dissociation within tenses (due to conceptual-semantic differences) and an effect of experimental task (mediated by processing limitations). Two sources of data were used: a meta-analysis of published research (which yielded 143 datasets) and new data from 16 persons with agrammatic aphasia. Tensed verbs were significantly more impaired than neutral (nonfinite) verbs, but there were no consistent differences between past, present, and future tenses. Overall, tense accuracy was mediated by task, such that picture description task was the most challenging, relative to sentence completion, sentence production priming, and grammaticality judgment. An interaction between task and tense revealed a past tense disadvantage for a sentence production priming task. These findings indicate that verb tense impairment is exacerbated by processing demands of the elicitation task and the conceptual-semantic differences between tenses are too subtle to show differential performance in agrammatism.

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