Perception of strong-meter and weak-meter rhythms in children with spina bifida meningomyelocele.
Perception of strong-meter and weak-meter rhythms in children with spina bifida meningomyelocele.
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DOI：
10.1017/s1355617709090845
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发表时间：
2009-07
期刊：
影响因子：
--
通讯作者：
Dennis M
中科院分区：
文献类型：
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作者：
Hopyan T;Schellenberg EG;Dennis M
神经发育障碍，如脊柱裂、脑膜脊髓膨出(SBM)，通常与节律运动障碍有关。我们研究了21名SBM儿童和21名年龄匹配的对照组儿童的节奏辨别能力，研究问题是这两组儿童是否都表现出强节拍优势，即强节拍的节奏辨别能力比弱节拍儿童更好，在强节拍的节奏中出现较长间隔的节奏，而在弱节奏的节奏中，较长间隔的开始出现在节拍之外。与对照组相比，SBM组辨别强节拍节奏的能力较差，尽管他们在辨别弱节拍节奏方面的表现相当。SBM儿童的强节拍优势减弱表明，他们的节律缺陷发生在感知和动作水平上，可能代表着大脑节律机制的中央处理中断。
Neurodevelopmental disorders such as spina bifida meningomyelocele (SBM) are often associated with dysrhythmic movement. We studied rhythm discrimination in 21 children with SBM and in 21 age-matched controls, with the research question being whether both groups showed a strong-meter advantage whereby rhythm discrimination is better for rhythms with a strong-meter, in which onsets of longer intervals occurred on the beat, than those with a weak-meter, in which onsets of longer intervals occurred off the beat. Compared to controls, the SBM group was less able to discriminate strong-meter rhythms, although they performed comparably in discriminating weak-meter rhythms. The attenuated strong-meter advantage in children with SBM shows that their rhythm deficits occur at the level of both perception and action, and may represent a central processing disruption of the brain mechanisms for rhythm.