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Speech shadowing

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Speech shadowing is an experimental technique in which subjects repeat speech immediately after hearing it (usually through earphones). The reaction time between hearing a word and pronouncing it can be as short as 254 ms[1] or even 150 ms.[2] This is only the delay duration of a speech syllable. While a person is only asked to repeat words, they also automatically process their syntax and semantics.[1] Words repeated during shadowing imitate the parlance of the words overheard more than the same words when read aloud by the subject.[3]

Functional imaging finds that the shadowing of nonwords[4] occurs through the dorsal stream that links auditory and motor representations of speech through a pathway that starts in the superior temporal cortex, goes to the inferior parietal cortex and then the posterior inferior frontal cortex (Broca's area).[5]

Speech shadowing was first used as a research technique by the Leningrad Group led by Ludmilla Andreevna Chistovich in the late '50s.[2][6] It has been used in research upon speech perception[1] and stuttering.[7]

FootnotesEdit

  1. 1.0 1.1 1.2 PMID 4621131 (PMID 4621131)
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  2. 2.0 2.1 DOI:10.1016/0167-6393(85)90036-6
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  3. PMID 15283067 (PMID 15283067)
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  4. PMID 19345269 (PMID 19345269)
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  5. PMID 15037127 (PMID 15037127)
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  6. DOI:10.1121/1.422540
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  7. PMID 2808903 (PMID 2808903)
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