使用皮质大脑小脑结构模式来分类早期和晚期训练的音乐家
Joseph J Shenker1,2, Christopher J Steele1,3, Robert J Zatorre2,4
1Department of Psychology, Concordia University, Montreal, Quebec, Canada.
Human brain mapping
|June 16, 2023
概括
在七岁之前开始音乐训练可以提高音乐技能并改变大脑结构,特别是在小脑和感觉运动区域. 这种早期的培训会影响皮质-小脑发育,支持音乐的敏感时期.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 音乐心理学 音乐心理学
背景情况:
- 有证据表明,音乐训练是一个敏感的时期,早期的开始者 (在7岁之前) 显示出卓越的音乐技能和独特的大脑结构.
- 在早期训练 (ET) 和晚期训练 (LT) 音乐家之间,在运动皮层和小脑区域中注意到了差异.
研究的目的:
- 使用机器学习研究ET和LT音乐家之间的结构性大脑差异.
- 确定早期音乐培训敏感时期的年龄界限.
主要方法:
- 使用了支持向量机器 (SVM) 模型,一种监督机器学习技术.
- 使用递归特征消除与交叉验证来选择关键大脑区域.
- 感兴趣的区域集中在小脑和皮质感官运动区域.
主要成果:
- 一个最佳的SVM模型准确地对ET和LT音乐家进行了分类,确定了17个关键区域 (9个小脑区域,8个感觉运动区域).
- 该模型在区分早期和晚期学员方面表现出高准确度,灵敏度和特异性.
- 当将ET音乐家定义为在7岁之前开始训练的音乐家时,该分类是最准确的,其表现优于不同年龄 (5-10岁) 的模型.
结论:
- 在7岁之前的音乐训练在成年时显著影响皮质-小脑结构.
- 研究结果支持在发育过程中连接的大脑区域之间的相互相互作用的假设,影响大脑和行为成熟.
- 这项研究提供了强有力的证据,证明音乐发育中的敏感时期会影响神经可塑性.
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