Subjective experience of inner speech in aphasia: Preliminary behavioral relationships and neural correlates.

MedStar author(s):
Citation: Brain & Language. 164:32-42, 2017 JanPMID: 27694017Institution: MedStar National Rehabilitation NetworkForm of publication: Journal ArticleMedline article type(s): Journal ArticleSubject headings: *Anomia/pp [Physiopathology] | *Anomia/px [Psychology] | *Aphasia/pp [Physiopathology] | *Aphasia/px [Psychology] | Adult | Aged | Aged, 80 and over | Anomia/co [Complications] | Anomia/pa [Pathology] | Aphasia/co [Complications] | Aphasia/pa [Pathology] | Female | Humans | Language Tests | Male | Middle Aged | Pilot Projects | Self Report | Sensorimotor Cortex/pa [Pathology] | Sensorimotor Cortex/pp [Physiopathology] | SpeechYear: 2017ISSN:
  • 0093-934X
Name of journal: Brain and languageAbstract: Copyright � 2016 Elsevier Inc. All rights reserved.Many individuals with aphasia describe anomia with comments like "I know it but I can't say it." The exact meaning of such phrases is unclear. We hypothesize that at least two discrete experiences exist: the sense of (1) knowing a concept, but failing to find the right word, and (2) saying the correct word internally but not aloud (successful inner speech, sIS). We propose that sIS reflects successful lexical access; subsequent overt anomia indicates post-lexical output deficits. In this pilot study, we probed the subjective experience of anomia in 37 persons with aphasia. Self-reported sIS related to aphasia severity and phonological output deficits. In multivariate lesion-symptom mapping, sIS was associated with dorsal stream lesions, particularly in ventral sensorimotor cortex. These preliminary results suggest that people with aphasia can often provide meaningful insights about their experience of anomia and that reports of sIS relate to specific lesion locations and language deficits.All authors: Fama ME, Friedman RB, Hayward W, Snider SF, Turkeltaub PEFiscal year: FY2017Digital Object Identifier: Date added to catalog: 2017-05-06
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Journal Article MedStar Authors Catalog Article 27694017 Available 27694017

Copyright � 2016 Elsevier Inc. All rights reserved.

Many individuals with aphasia describe anomia with comments like "I know it but I can't say it." The exact meaning of such phrases is unclear. We hypothesize that at least two discrete experiences exist: the sense of (1) knowing a concept, but failing to find the right word, and (2) saying the correct word internally but not aloud (successful inner speech, sIS). We propose that sIS reflects successful lexical access; subsequent overt anomia indicates post-lexical output deficits. In this pilot study, we probed the subjective experience of anomia in 37 persons with aphasia. Self-reported sIS related to aphasia severity and phonological output deficits. In multivariate lesion-symptom mapping, sIS was associated with dorsal stream lesions, particularly in ventral sensorimotor cortex. These preliminary results suggest that people with aphasia can often provide meaningful insights about their experience of anomia and that reports of sIS relate to specific lesion locations and language deficits.

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