Perception of musical timbre in congenital amusia: Categorization, discrimination and short-term memory
Perception of musical timbre in congenital amusia: Categorization, discrimination and short-term memory
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DOI：
10.1016/j.neuropsychologia.2011.12.006
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发表时间：
2012-02-01
期刊：
影响因子：
2.6
通讯作者：
Stewart, Lauren
中科院分区：
文献类型：
--
作者：
Marin, Manuela M.;Gingras, Bruno;Stewart, Lauren
先天性失乐症是一种神经发育障碍，其主要特征是音高领域的困难。本研究的目的是探讨在一组先天性失乐症的个人的音乐音色的感知，通过探测的歧视和短期记忆的真实世界的音色刺激，以及检查这些人的能力，排序乐器音调根据他们的音色相似性。13个音乐人与13个非音乐控制的背景变量范围相匹配。的歧视任务包括两个不同的持续时间和配对的工具音，反映了不同的距离在感知音色空间的刺激。两组在辨别任务中的表现都达到了最高点。相比之下，失音乐症患者在短期音色记忆任务中的得分低于对照组。在排序任务上，Amuseum个体的表现也比对照组差，这表明在音乐音色的高阶表征上存在差异。这些发现进一步证实了音乐失认症是一种对音乐音色和音高的感知和记忆有影响的疾病。(C)2011爱思唯尔有限公司版权所有。
Congenital amusia is a neurodevelopmental disorder that is characterized primarily by difficulties in the pitch domain. The aim of the present study was to investigate the perception of musical timbre in a group of individuals with congenital amusia by probing discrimination and short-term memory for real-world timbral stimuli as well as examining the ability of these individuals to sort instrumental tones according to their timbral similarity. Thirteen a music individuals were matched with thirteen non-amusic controls on a range of background variables. The discrimination task included stimuli of two different durations and pairings of instrumental tones that reflected varying distances in a perceptual timbre space. Performance in the discrimination task was at ceiling for both groups. In contrast, amusic individuals scored lower than controls on the short-term timbral memory task. Amusic individuals also performed worse than controls on the sorting task, suggesting differences in the higher-order representation of musical timbre. These findings add to the emerging picture of amusia as a disorder that has consequences for the perception and memory of musical timbre, as well as pitch. (C) 2011 Elsevier Ltd. All rights reserved.