Processing of self-related kinematic information embedded in static handwritten characters.
Processing of self-related kinematic information embedded in static handwritten characters.
复制标题
处理嵌入静态手写字符的自相关运动信息。
DOI：
10.1016/j.brainres.2016.03.039
复制
发表时间：
2016
期刊：
影响因子：
2.9
通讯作者：
H. Doi & N. Masataka
中科院分区：
文献类型：
--
作者：
R. Sawada;H. Doi & N. Masataka
手写字符是由我们自己的运动动作产生的，以前的研究表明，这些字符被感知和产生的方式是相关的。然而，嵌入在静态手写字符中的自我相关运动学信息的加工所涉及的神经激活的时间过程仍然有待识别。我们应用了事件相关电位(ERP)记录，同时参与者判断手写字符是自我生成的还是非自我生成的。为了检验静态手写字符的自相关运动学特征的影响，我们进行了两个实验，分别是操纵字符的风格或熟悉度。事件相关电位结果表明，右后部P250成分(刺激开始后250-350毫秒)和中线前部晚期正成分(LPC；刺激开始后350-500毫秒)的自我和非自我书写字符的大脑激活存在差异；即使手写字符不是以通常的形式产生或第一次书写也是如此。因此，我们的数据表明，嵌入在手写字符中的自我信息既涉及与身体自我加工有关的右侧化大脑激活，也涉及与自我参照加工有关的中线前脑激活。
Handwritten characters are generated by our own motor actions, and previous studies have shown that the manner in which such characters are perceived and generated is related. However, the temporal course of the neural activation involved in the processing of self-related kinematic information embedded in static handwritten characters remains to be identified. We applied event-related potential (ERP) recording while participants judged whether handwritten characters were self- or non-self-generated. To test the effects of the self-related kinematic characteristics of static handwritten characters, we conducted two experiments in which the styles or familiarity of characters were manipulated. The ERP results indicated differences in brain activation between self- and non-self-written characters for the P250 component (250–350 ms after stimulus onset) in right posterior regions and for the late positive component (LPC; 350–500 ms after stimulus onset) in anterior midline regions; this was the case even when the handwritten characters were not generated in their usual form or were written for the first time. Therefore, our data indicate that self-information embedded in handwritten characters involves both right-lateralized brain activation associated with bodily self-processing and anterior midline brain activation related to self-referential processing.