کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5045112 | 1475551 | 2017 | 6 صفحه PDF | دانلود رایگان |
- Amusic are more likely to identify lexical tones using envelope pitch-cues.
- Amusia does not only manifest in fine-grained pitch judgements.
- These results are consistent with the existence of two distinct pitch mechanisms.
Amusia is a pitch perception disorder associated with deficits in processing and production of both musical and lexical tones, which previous reports have suggested may be constrained to fine-grained pitch judgements. In the present study speakers of tone-languages, in which lexical tones are used to convey meaning, identified words present in chimera stimuli containing conflicting pitch-cues in the temporal fine-structure and temporal envelope, and which therefore conveyed two distinct utterances. Amusics were found to be more likely than controls to judge the word according to the envelope pitch-cues. This demonstrates that amusia is not associated with fine-grained pitch judgements alone, and is consistent with there being two distinct pitch mechanisms and with amusics having an atypical reliance on a secondary mechanism based upon envelope cues.
Journal: Neuropsychologia - Volume 104, September 2017, Pages 48-53