Tone Merging Patterns in Congenital Amusia in Hong Kong Cantonese

Oi-Yee Ho, Jing Shao, J. Ou, S. Law, Caicai Zhang
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引用次数: 2

Abstract

Congenital amusia is a neurodevelopmental disorder, affecting fine-grained musical pitch processing without brain injury. This disorder also affects pitch processing in speech such as lexical tone perception. On the other hand, the phenomenon of tone merging has been observed among some speakers of Hong Kong Cantonese (HKC), who exhibit confusion between certain tone pairs in perception and/or production. It has been reported that tone merging may relate to individual variation in cognitive abilities of working memory and attention. The current study is a first attempt to investigate the relationship between amusia and tone merging by examining tone merging patterns in perception of amusics in HKC and their cognitive abilities of working memory and attention as well as pitch threshold. The results revealed a different profile of amusics from that of merger groups reported in previous studies. Amusics exhibited a profound impairment in discriminating tones compared to musically intact controls, which appeared to differ from the highly selective perceptual confusion of tone pairs reported in the merger groups. Regarding cognitive measures, amusics also demonstrated broad deficits in selective attention, working memory and inhibitory control. The temporary results imply that amusia might have a limited contribution to the previously reported tone merging.
香港粤语先天性失音症的音合并模式
先天性失音症是一种神经发育障碍,在没有脑损伤的情况下影响精细音高的加工。这种障碍还影响语音中的音高处理,如词汇音调感知。另一方面,一些说香港粤语的人也出现了声调合并的现象,他们在感知和/或发出某些声调时出现了混淆。据报道,声调合并可能与个体工作记忆和注意力认知能力的差异有关。本研究首次通过研究儿童对音乐感知中的音合并模式及其工作记忆、注意和音高阈值的认知能力来探讨失音症与音合并之间的关系。结果显示,与之前的研究报告中合并组的音乐不同。与音乐完好的对照组相比,音乐组在辨别音调方面表现出严重的损伤,这似乎不同于合并组中对音调对的高度选择性感知混淆。在认知测量方面,音乐在选择性注意、工作记忆和抑制控制方面也表现出广泛的缺陷。暂时的结果表明,失音症可能对先前报道的音调合并有有限的贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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