在腹腔皮层中,类别表示的纵向发展预测了词语和面部识别
Marisa Nordt1,2,3, Jesse Gomez4, Vaidehi S Natu5
1Department of Psychology, Stanford University, Stanford, CA, USA. mnordt@ukaachen.de.
Nature communications
|December 4, 2023
概括
儿童大脑区域的发育表明,随着年龄的增长,类别表征会得到加强和削弱. 这会影响词语和人脸识别能力,突出显示长期皮质发育.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 认知神经科学 认知神经科学
背景情况:
- 腹腔皮层区域对于视觉识别诸如单词和面孔等类别至关重要.
- 类别表示也存在于高层视觉皮层的分布式响应中.
- 这些分布式表示的发展轨迹及其与行为变化的联系尚未得到充分理解.
研究的目的:
- 纵向研究分布式类别表征在儿童腹腔皮层的发展.
- 检查这些表征在童年几年内如何变化.
- 为了确定分布式表示中的发育变化是否与行为识别性能相关.
主要方法:
- 利用功能磁共振成像 (fMRI) 来追踪大脑活动.
- 多年来对学龄儿童进行了长度研究.
- 对10个不同的视觉类别在腹腔皮层的分布式反应进行了分析.
主要成果:
- 随着年龄的增长,观察到类别表示的加强和削弱,主要是在类别选择性语音中.
- 在左半球的文字表示和双边的面部表示中,注意到文字表示的特征增加.
- 发现单词和面部表现的独特性预测了个体儿童的识别表现.
结论:
- 童年期间在腹腔时皮层中分布式表示的发展具有显著的行为后果.
- 这些发现有助于理解皮层发育的长期和动态性质.
- 这项研究将视觉处理中的神经变化与识别技能的可观察到的改善联系起来.
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