Institute of Medical Psychology, Ludwig Maximilian University Munich, Goethestr. 31, 80336, Munich, Germany.
Neurosci Lett. 2010 Jan 29;469(3):411-5. doi: 10.1016/j.neulet.2009.12.040. Epub 2009 Dec 23.
Analyses of neural mechanisms of duration processing are essential for the understanding of psychological phenomena which evolve in time. Different mechanisms are presumably responsible for the processing of shorter (below 500 ms) and longer (above 500 ms) events but have not yet been a subject of an investigation with functional magnetic resonance imaging (fMRI). In the present study, we show a greater involvement of several brain regions - including right-hemispheric midline structures and left-hemispheric lateral regions - in the processing of visual stimuli of shorter as compared to longer duration. We propose a greater involvement of lower-level cognitive mechanisms in the processing of shorter events as opposed to higher-level mechanisms of cognitive control involved in longer events.
分析时长加工的神经机制对于理解随时间演变的心理现象至关重要。不同的机制可能负责处理较短（低于 500 毫秒）和较长（高于 500 毫秒）的事件，但尚未用功能磁共振成像（fMRI）进行研究。在本研究中，我们发现与处理较长时长的视觉刺激相比，处理较短时长的视觉刺激时，大脑的几个区域（包括右半球中线结构和左半球外侧区域）的参与度更高。我们提出，在处理较短时长的事件时，较低层次的认知机制的参与度更高，而在处理较长时长的事件时，认知控制的较高层次机制的参与度较低。
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