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首页> 外文期刊>The European Journal of Neuroscience >Temporal cuing modulates alpha oscillations during auditory attentional blink
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Temporal cuing modulates alpha oscillations during auditory attentional blink

机译：时间提示在听觉注意眨眼过程中调节阿尔法振动

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摘要

Attentional blink (AB) refers to the phenomenon whereby the correct identification of a visual or auditory target impairs processing of a subsequent probe. Although it has been shown that knowing in advance, when the probe would be presented, reduces the attentional blink and increases the amplitude of event-related potential (ERP) elicited by the probe, the neural mechanism by which attention mitigates the AB remains unclear. Here, we used time-frequency analysis to further explore the mechanism of the auditory attentional blink. Participants were presented a series of rapid auditory stimuli and asked to indicate whether a target and a probe were present in the sequence. In half of the trials, participants were cued to the probe position relative to the target ('Early' or 'Late'). Probe detection and ERP amplitude elicited by the probe decreased when the probe was presented shortly after the target compared to when it was presented later after the target. Importantly, the behavioral and ERP correlates of probe discrimination significantly improved when the 'Early' cue was presented. The improvement in processing the probe in the cued condition was accompanied by the decrease in alpha activity (8-13 Hz) after the time when the probe was expected; suggesting that successfully directing attention to time window where the probe would likely occur reduces the processing resources needed to suppress distractors. This in turn freed up available processing resources for the target and probe at the short-term consolidation stage, which ultimately reduced the auditory attentional blink.
机译：注意眨眼（AB）指的是正确识别视觉或听觉目标会削弱后续探针处理的现象。尽管已经显示出事先知道，什么时候会出现探针，会减少注意力眨眼并增加探针引起的事件相关电位（ERP）的幅度，但是注意力减轻AB的神经机制仍然不清楚。在这里，我们使用时频分析来进一步探索听觉注意眨眼的机制。向参与者提供了一系列快速听觉刺激，并要求其指示序列中是否存在靶标和探针。在一半的试验中，将参与者提示到相对于目标（“早期”或“晚期”）的探头位置。当探针在靶后不久出现时，与探针在靶后出现时相比，探针引起的探针检测和ERP振幅降低。重要的是，当出现“早期”提示时，探针识别的行为和ERP相关性显着改善。在提示状态下处理探针的过程中，随着预期探针的出现，α活性（8-13 Hz）降低了;建议成功地将注意力转移到可能发生探查的时间窗口上，可以减少抑制干扰因素所需的处理资源。反过来，这又释放了目标和探针在短期合并阶段可用的处理资源，最终减少了听觉注意眨眼。

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