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首页> 外文期刊>Journal of Cognitive Neuroscience >Temporal Order is Coded Temporally in the Brain: Early Event-related Potential Latency Shifts Underlying Prior Entry in a Cross-modal Temporal Order Judgment Task
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Temporal Order is Coded Temporally in the Brain: Early Event-related Potential Latency Shifts Underlying Prior Entry in a Cross-modal Temporal Order Judgment Task

机译：时间顺序在大脑中是临时编码的：与交叉模式的时间顺序判断任务中的预先进入相关的早期事件相关的潜在延迟转移

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摘要

The speeding-up of neural processing associated with attended events (i.e., the prior-entry effect) has long been proposed as a viable mechanism by which attention can prioritize our perception and action. In the brain, this has been thought to be regulated through a sensory gating mechanism, increasing the amplitudes of early evoked potentials while leaving their latencies unaffected. However, the majority of previous research has emphasized speeded responding and has failed to emphasize fine temporal discrimination, thereby potentially lacking the sensitivity to reveal putative modulations in the timing of neural processing. In the present study, we used a cross-modal temporal order judgment task while shifting attention between the visual and tactile modalities to investigate the mechanisms underlying selective attention electrophysiologically. Our results indicate that attention can indeed speed up neural processes during visual perception, thereby providing the first electrophysiological support for the existence of prior entry.
机译：长期以来，与参加事件相关的神经处理（即事前进入效应）的加速被提出为可行的机制，通过这种机制注意力可以优先考虑我们的感知和行动。在大脑中，这被认为是通过感觉门控机制来调节的，增加了早期诱发电位的幅度，同时使潜伏期不受影响。但是，先前的大多数研究都强调了加快响应速度，并且没有强调精细的时间区分，因此潜在地缺乏在神经处理时机揭示假定的调制的敏感性。在本研究中，我们使用跨模式的时间顺序判断任务，同时在视觉和触觉模式之间转移注意力，以研究电生理学基础选择性注意的机制。我们的结果表明，注意力的确可以加速视觉感知过程中的神经过程，从而为先前进入的存在提供了第一电生理支持。

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