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Impaired short-term memory for pitch in congenital amusia

机译:先天性失聪的短期记忆障碍

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Congenital amusia is a neuro-developmental disorder of music perception and production. The hypothesis is that the musical deficits arise from altered pitch processing, with impairments in pitch discrimination (i.e., pitch change detection, pitch direction discrimination and identification) and short-term memory. The present review article focuses on the deficit of short-term memory for pitch. Overall, the data discussed here suggest impairments at each level of processing in short-term memory tasks; starting with the encoding of the pitch information and the creation of the adequate memory trace, the retention of the pitch traces over time as well as the recollection and comparison of the stored information with newly incoming information. These impairments have been related to altered brain responses in a distributed fronto-temporal network, associated with decreased connectivity between these structures, as well as in abnormalities in the connectivity between the two auditory cortices. In contrast, amusic participants' short-term memory abilities for verbal material are preserved. These findings show that short-term memory deficits in congenital amusia are specific to pitch, suggesting a pitch-memory system that is, at least partly, separated from verbal memory. This article is part of a Special Issue entitled SI: Auditory working memory. (c) 2015 Elsevier B.V. All rights reserved.
机译:先天性失语是音乐感知和产生的神经发育障碍。假设是音乐缺陷是由于音调处理的改变而引起的,音调识别(即音调变化检测,音调方向识别和识别)和短期记忆受到损害。本篇评论文章重点关注对音调的短期记忆的不足。总体而言,此处讨论的数据表明短期记忆任务在每个处理级别都有损害;从音调信息的编码和创建足够的存储迹线开始,音调迹线随时间的保持以及存储信息与新进入信息的比较和比较。这些损伤与分布式额颞网络中大脑反应的改变有关,与这些结构之间的连通性降低以及两个听觉皮层之间的连通性异常有关。相反,音乐参与者对语言材料的短期记忆能力得以保留。这些发现表明,先天性躁郁症的短期记忆缺陷是特定于音调的,这表明音调记忆系统至少部分与言语记忆分开。本文是名为“ SI:听觉工作记忆”的特刊的一部分。 (c)2015 Elsevier B.V.保留所有权利。

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