成人和学龄儿童在单词处理方面的功能神经解剖学差异
Bradley L Schlaggar1, Timothy T Brown, Heather M Lugar
1Department of Neurology, Washington University, St. Louis, MO 63110, USA. schlaggarb@neuro.wustl.edu
概括
执行文字任务的儿童和成年人的大脑差异表明,到10岁时,大脑激活模式的成熟不完全. 这项发展性认知神经科学研究强调了功能神经解剖学与年龄相关的变化.
科学领域:
- 发展性认知神经科学 发展性认知神经科学
- 神经科学是一个神经科学.
- 认知神经科学是一种认知神经科学.
背景情况:
- 发育性认知神经科学的一个关键问题是了解儿童和成人在认知任务期间功能神经解剖学的差异.
- 研究与年龄相关的大脑功能变化对于理解认知发展至关重要.
研究的目的:
- 为了直接比较成人和儿童执行单词处理任务的大脑激活模式.
- 为了确定观察到的大脑激活的差异是由于性能差异或功能神经解剖学的成熟变化.
主要方法:
- 成人和儿童 (年龄在7~10岁) 进行了视觉单词处理任务.
- 在年龄组之间比较左额叶和外层皮层中的大脑激活.
主要成果:
- 在成人和儿童之间,在特定的额头和外层区域发现了大脑激活的显著差异.
- 观察到的一些与年龄相关的大脑活化差异独立于任务性能,表明成熟效应.
结论:
- 文字处理的功能神经解剖学显示了童年和成年之间的发展变化.
- 对于这些任务,大脑激活模式似乎在10岁的儿童身上仍在成熟.
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