Attention is often extolled for its selective neural properties. Yet, when powerfully captured by a salient unexpected event, attention can give rise to a broad cascade of systemic effects for evaluating and adaptively responding to the event. Using graph theory analysis combined with fMRI, here we show that the extensive psychophysiological and cognitive changes associated with such attention capture are related to large-scale, distributed changes in the brain's functional connectivity. Novel task-irrelevant 'oddball' stimuli presented to subjects during the performance of a target-search task triggered an increase in inter-network functional connectivity that degraded the brain's network modularity, thereby facilitating the integration of information. Further, this phenomenon habituated with repeated oddball presentations, mirroring the behavior. These functional network connectivity changes are remarkably consistent with those previously obtained with conscious target perception, thus raising the possibility that large-scale inter-network connectivity changes triggered by attentional capture and awareness rely on common neural network dynamics.

中文翻译：

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通过注意力捕获增加人脑中的网络间功能连接

注意力通常因其选择性神经特性而受到称赞。然而，当被突出的意外事件有力地捕获时，注意力可以产生广泛的系统效应，用于评估和适应性地响应事件。使用图论分析结合 fMRI，我们在这里表明与这种注意力捕获相关的广泛的心理生理和认知变化与大脑功能连接的大规模分布式变化有关。在执行目标搜索任务期间呈现给受试者的新的与任务无关的“奇怪”刺激引发了网络间功能连接的增加，从而降低了大脑的网络模块性，从而促进了信息的整合。此外，这种现象习惯于重复古怪的演讲，反映行为。这些功能性网络连通性变化与先前通过有意识目标感知获得的变化非常一致，从而增加了由注意力捕获和意识触发的大规模网络间连通性变化依赖于共同的神经网络动力学的可能性。