Effects of neurological damage on production of formulaic language

Authors: Sidtis, Diana1; Canterucci, Gina2; Katsnelson, Dora3

Source: Clinical Linguistics & Phonetics, Volume 23, Number 4, April 2009 , pp. 270-284(15)

Publisher: Informa Healthcare

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Early studies reported preserved formulaic language in left hemisphere damaged subjects and reduced incidence of formulaic expressions in the conversational speech of stroke patients with right hemispheric damage. Clinical observations suggest a possible role also of subcortical nuclei. This study examined formulaic language in the spontaneous speech of stroke patients with left, right, or subcortical damage. Four subjects were interviewed and their speech samples compared to normal speakers. Raters classified formulaic expressions as speech formulae, fillers, sentence stems, and proper nouns. Results demonstrated that brain damage affected novel and formulaic language competence differently, with a significantly smaller proportion of formulaic expressions in subjects with right or subcortical damage compared to left hemisphere damaged or healthy speakers. These findings converge with previous studies that support the proposal of a right hemisphere/subcortical circuit in the management of formulaic expressions, based on a dual-process model of language incorporating novel and formulaic language use.

Keywords: Aphasia; basal ganglia; formulaic language

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/02699200802673242

Affiliations: 1: New York University, New York, New York, USA,Nathan Kline Clinic for Psychiatric Research, Orangeburg, New York, USA 2: New York University, New York, New York, USA 3: Nathan Kline Clinic for Psychiatric Research, Orangeburg, New York, USA

Publication date: April 1, 2009

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