Perisaccadic Updating of Visual Representations and Attentional States: Linking Behavior and Neurophysiology.
Perisaccadic Updating of Visual Representations and Attentional States: Linking Behavior and Neurophysiology.
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DOI：
10.3389/fnsys.2016.00003
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发表时间：
2016
影响因子：
3
通讯作者：
Mazer JA
中科院分区：
文献类型：
--
作者：
Marino AC;Mazer JA
在自然视觉过程中，眼球扫视运动会导致频繁的视网膜图像变化，从而导致不同的神经元亚群在注视时表现出相同的视觉特征。尽管神经表征发生了这些潜在的破坏性变化，但我们的视觉感知却非常稳定。视觉感受野重新映射，其特征是在眼跳之前神经元空间感受野位置的预期变化，已被提议作为视觉稳定性的一种可能的神经基础。重新映射的许多具体属性，例如，重新映射相对于扫视向量的确切方向以及重新映射可以实例化稳定性的精确机制，仍然是一个有争议的问题。最近的研究还表明，视觉注意力就像感知本身一样，可以在眼跳中持续，这表明注意力控制系统也可以补偿眼球运动。经典重映射可能具有注意力成分，或者可能存在与视觉重映射不同的注意力类似物。目前我们还没有完全理解注意力表征的稳定性与视跳感受野变化之间的关系。在这篇综述中，我们开发了一个词汇表来讨论接受场位置的视跳变化和注意焦点的视跳变化，回顾和综合视跳感知和视跳注意力的行为和神经生理学研究，并确定仍有待实验解决的开放性问题。
During natural vision, saccadic eye movements lead to frequent retinal image changes that result in different neuronal subpopulations representing the same visual feature across fixations. Despite these potentially disruptive changes to the neural representation, our visual percept is remarkably stable. Visual receptive field remapping, characterized as an anticipatory shift in the position of a neuron’s spatial receptive field immediately before saccades, has been proposed as one possible neural substrate for visual stability. Many of the specific properties of remapping, e.g., the exact direction of remapping relative to the saccade vector and the precise mechanisms by which remapping could instantiate stability, remain a matter of debate. Recent studies have also shown that visual attention, like perception itself, can be sustained across saccades, suggesting that the attentional control system can also compensate for eye movements. Classical remapping could have an attentional component, or there could be a distinct attentional analog of visual remapping. At this time we do not yet fully understand how the stability of attentional representations relates to perisaccadic receptive field shifts. In this review, we develop a vocabulary for discussing perisaccadic shifts in receptive field location and perisaccadic shifts of attentional focus, review and synthesize behavioral and neurophysiological studies of perisaccadic perception and perisaccadic attention, and identify open questions that remain to be experimentally addressed.