Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/78094
Title: Normal pre-attentive and impaired attentive processing of lexical tones in Cantonese-speaking congenital amusics
Authors: Zhang, CC 
Shao, J 
Issue Date: 2018
Publisher: Nature Publishing Group
Source: Scientific reports, 2018, 8:8420, p.1-14 How to cite?
Journal: Scientific reports 
Abstract: The neural underpinnings of congenital amusia, an innate neurogenetic disorder of musical pitch processing, are not well understood. Previous studies suggest that amusia primarily impairs attentive processing (P300) of small pitch deviations in music, leaving pre-attentive pitch processing (mismatch negativity or MMN) more or less intact. However, it remains unknown whether the same neuro-dynamic mechanism of deficiency underlies pitch processing in speech, where amusics also often show impairment behaviorally. The current study examined how lexical tones are processed in pre-attentive (MMN) and attentive (P300) conditions in 24 Cantonese-speaking amusics and 24 matched controls. At the pre-attentive level, Cantonese-speaking amusics exhibited normal MMN responses to lexical tone changes, even for tone pairs with small pitch differences (mid level vs. low level tone; high rising vs. low rising tone). However, at the attentive level, amusics exhibited reduced P3a amplitude for all tone pairs, and further reduced P3b amplitude for tone pairs with small pitch differences. These results suggest that the amusic brain detects tone changes normally pre-attentively, but shows impairment in consciously detecting the same tone differences. Consistent with previous findings in nonspeech pitch processing, this finding provides support for a domain-general neuro-dynamic mechanism of deficient attentive pitch processing in amusia.
URI: http://hdl.handle.net/10397/78094
EISSN: 2045-2322
DOI: 10.1038/s41598-018-26368-7
Rights: © The Author(s) 2018
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
The following publication Zhang, C., & Shao, J. (2018). Normal pre-attentive and impaired attentive processing of lexical tones in Cantonese-speaking congenital amusics. Scientific reports, 8:8420 is available at https://doi.org/10.1038/s41598-018-26368-7
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