The temporal features of self-referential processing evoked by Chinese handwriting
The temporal features of self-referential processing evoked by Chinese handwriting
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中文笔迹引起的自我指涉加工的时间特征
DOI：
10.1162/jocn.2008.20505
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发表时间：
2008-05-01
影响因子：
3.2
通讯作者：
Li, Hong
中科院分区：
文献类型：
--
作者：
Chen, Antao;Weng, Xuchu;Li, Hong
为了探索自我参照加工的时间特征和潜在的大脑结构，参与者被展示了中文笔迹的例子，其中一半是自己的，另一半是别人的，并要求判断笔迹是否是自己的。在实验1中，任务是通过尽可能快地按下正确的键来对笔迹进行分类。在实验2中，参与者认识到刺激后，他们被要求在作出反应，而不是立即响应刺激发作后，凝视的笔迹为3000毫秒。结果表明，在200-500毫秒和1000-2000毫秒的时间窗内，由自己和其他手写条件引起的事件相关电位的显着差异。偶极子分析的差异波，自己减去其他，在这两个时间窗口进行。在200-500毫秒的时间窗内，内侧颞叶和前扣带皮层（ACC）有两个偶极子，MTL激活先于ACC激活。只有一个偶极子在后扣带皮层拟合到1000-2000毫秒的时间窗口。这些结构在一个时间过程中被顺序激活，这提供了证据表明，皮层中间结构可能形成一个特定的自我相关的处理单元，它涉及处理自我的各个方面。
To explore the temporal features and underlying brain structures of self-referential processing, participants were shown examples of Chinese handwriting, half of which were their own and the other half belonged to others, and asked to judge whether the handwriting was their own. In Experiment 1, the task was to categorize the handwriting by pressing the correct key as quickly as possible. In Experiment 2, after the participants recognized the stimuli, they were required to gaze at the handwriting for 3000 msec before making a response rather than responding immediately after stimulus onset. The results showed prominent differences in event-related potentials elicited by own and other handwriting conditions in the 200-500 msec and 1000-2000 msec time windows. Dipole analyses of the difference waves, own minus other, were conducted in both of these time windows. There were two dipoles in the 200-500 msec time window localized to the medial-temporal lobe and the anterior cingulate cortex (ACC), and MTL activation preceded ACC activation. Only one dipole at the posterior cingulate cortex was fitted to the 1000-2000 msec time window. These structures were activated sequentially in a temporal course, which provides evidence that the cortex middle structures potentially form a specific self-related processing unit, which is involved in processing various aspects of the self.