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

机译:失语症的内在语音主观体验:初步的行为关系和神经相关。

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摘要

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.
机译:许多失语症患者用“我知道但我不能说”这样的注释来描述失语症。这些短语的确切含义尚不清楚。我们假设至少存在两种​​离散的经历:(1)知道一个概念,但是找不到正确的单词,以及(2)在内部说出正确的单词但没有大声说出正确的单词(成功的内部语音,sIS)。我们建议sIS反映成功的词汇访问;随后的明显失范表明词法后产出不足。在这项初步研究中,我们探讨了37名失语症患者的失范主观体验。自我报告的sIS与失语症严重程度和语音输出缺陷有关。在多发性病变症状图谱中,sIS与背流病变有关,特别是在腹侧感觉运动皮层。这些初步结果表明,失语症患者通常可以提供有关其失范经历的有意义的见解,并且sIS的报告与特定的病变部位和语言缺陷有关。

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