期刊
BRAIN AND LANGUAGE
卷 164, 期 -, 页码 32-42出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bandl.2016.09.009
关键词
Language; Stroke; Aphasia; Anomia; Self-report; Inner speech; Lesion-symptom mapping
资金
- National Institutes of Health (NIH) [F31DC014875]
- NIH [F30DC014198]
- NIH/NIDCD [R03DC014310]
- NIH/NCATS via the Georgetown-Howard Universities Center for Clinical and Translational Science [KL2TR000102]
- Doris Duke Charitable Foundation [2012062]
- Vernon Family Trust
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. (C) 2016 Elsevier Inc. All rights reserved.
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