Gibbons Henning, Rammsayer Thomas H
Georg Elias Müller Institute for Psychology, University of Göttingen, D-37073 Göttingen, Germany.
Brain Res Cogn Brain Res. 2005 Sep;25(1):195-209. doi: 10.1016/j.cogbrainres.2005.05.009.
In an event-related potential (ERP) study, brain correlates of temporal processing in the range of milliseconds were investigated by means of a dissociation paradigm. For this purpose, ten male and ten female subjects performed temporal and pitch generalization tasks with uni- and bidimensional stimulus variation. With difficulty held constant for both tasks, a larger frontally distributed negative slow wave was observed for pitch generalization relative to temporal generalization. This ERP pattern was consistent across uni- and bidimensional tasks of the present study but in direct contrast to prior ERP studies on temporal processing. Furthermore, for both uni- and bidimensional temporal tasks, within-task ERP analyses yielded amplitude modulation of centro-parietal P3b and fronto-central P500 as brain correlates of actively processed stimulus duration. Findings were consistent with a two-process model of temporal information processing based on a real-time comparison of the presented stimulus duration against an internal representation of the standard duration.
在一项事件相关电位（ERP）研究中，通过分离范式研究了毫秒级时间处理的大脑关联。为此，10名男性和10名女性受试者进行了具有单维和二维刺激变化的时间和音高泛化任务。在两项任务的难度保持不变的情况下，相对于时间泛化，音高泛化观察到更大的额部分布负慢波。这种ERP模式在本研究的单维和二维任务中是一致的，但与先前关于时间处理的ERP研究形成直接对比。此外，对于单维和二维时间任务，任务内ERP分析均产生中央顶叶P3b和额中央P500的振幅调制，作为主动处理刺激持续时间的大脑关联。研究结果与基于将呈现的刺激持续时间与标准持续时间的内部表征进行实时比较的时间信息处理双过程模型一致。
