Simultaneous multi-area recordings suggest that attention improves performance by reshaping stimulus representations.
Simultaneous multi-area recordings suggest that attention improves performance by reshaping stimulus representations.
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同时多区域记录表明，注意力通过重塑刺激表征来提高表现。
DOI：
10.1038/s41593-019-0477-1
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发表时间：
2019
影响因子：
25
通讯作者：
Cohen,MarleneR
中科院分区：
文献类型：
--
作者：
Ruff,DouglasA;Cohen,MarleneR
视觉注意力极大地提高了个体的视觉能力，并调节了每个已知视觉和动眼神经区域的神经元的反应，但这种调节是否能改善知觉尚不清楚。我们测量了视觉神经元、动眼神经元群和在检测和辨别任务中的行为之间的关系。我们发现，注意力背后的两个重要的假想神经机制(涉及信息编码的变化和感觉信息的读出方式)都没有对观察到的行为改善提供令人满意的解释。相反，我们的结果更符合这样的假设，即注意力重塑了被注意刺激的表征，以更有效地影响行为。我们的结果表明，通过分析受行为和大脑区域之间相互作用限制的神经元反应，可以了解健康和疾病中感知和认知的神经基础。
Visual attention dramatically improves individuals’ ability to see and modulates the responses of neurons in every known visual and oculomotor area, but whether such modulations can account for perceptual improvements is unclear. We measured the relationship between populations of visual neurons, oculomotor neurons and behavior during detection and discrimination tasks. We found that neither of the two prominent hypothesized neuronal mechanisms underlying attention (which concern changes in information coding and the way sensory information is read out) provide a satisfying account of the observed behavioral improvements. Instead, our results are more consistent with the hypothesis that attention reshapes the representation of attended stimuli to more effectively influence behavior. Our results suggest a path toward understanding the neural underpinnings of perception and cognition in health and disease by analyzing neuronal responses in ways that are constrained by behavior and interactions between brain areas.