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Training-induced Neuroplasticity in Young Children

机译:幼儿培养诱导的神经塑性

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As the main interhemispheric fiber tract, the corpus callosum (CC) is of particular importance for musicians who simultaneously engage parts of both hemispheres to process and play music. Professional musicians who began music training before the age of 7 years have larger anterior CC areas than do nonmusicians, which suggests that plasticity due to music training may occur in the CC during early childhood. However, no study has yet demonstrated that the increased CC area found in musicians is due to music training rather than to preexisting differences. We tested the hypothesis that approximately 29 months of instrumental music training would cause a significant increase in the size of particular subareas of the CC known to have fibers that connect motor-related areas of both hemispheres. On the basis of total weekly practice time, a sample of 31 children aged 5-7 was divided into three groups: high-practicing, low-practicing, and controls. No CC size differences were seen at base line, but differences emerged after an average of 29 months of observation in the high-practicing group in the anterior midbody of the CC (which connects premotor and supplementary motor areas of the two hemispheres). Total weekly music exposure predicted degree of change in this subregion of the CC as well as improvement on a motor-sequencing task. Our results show that it is intense musical experience/practice, not preexisting differences, that is responsible for the larger anterior CC area found in professional adult musicians.
机译:作为主要的纵裂纤维束,胼胝体(CC)是特别重要的音乐家谁同时啮合两个半球的部分过程,并播放音乐。谁7岁以前就开始音乐训练专业音乐家比DO n​​onmusicians,这表明可塑性由于音乐训练幼儿期的CC可能会出现较大的前CC领域。然而,还没有研究尚未证实,增加CC区音乐家发现是由于音乐的训练,而不是已经存在的差异。我们测试了约29个月器乐训练会导致已知的CC的特定分区的大小显著上升有纤维的假设,即两个半球的连接电机的相关领域。对周总的练习时间的基础上,31岁的5-7儿童的样本分为三组:高练低练,和控制。无CC大小差异,看到在基线,但是差的平均值为29个月的观察后的高练组在CC(连接前运动和两个半球的运动辅助区)的前船体中部出现了。每周总音乐曝光预计该分区域CC的变化对电机测序任务的度数和改进。我们的研究结果表明它是强烈的音乐体验/实践,而不是已经存在的差异,这是负责的专业成人音乐家发现较大的前CC区。

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