Perceptual saccadic suppression starts in the retina
Perceptual saccadic suppression starts in the retina
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DOI：
10.1038/s41467-020-15890-w
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发表时间：
2020-04-24
影响因子：
16.6
通讯作者：
Hafed, Ziad M.
中科院分区：
文献类型：
--
作者：
Idrees, Saad;Baumann, Matthias P.;Hafed, Ziad M.
视觉灵敏度，通过非常短暂的视觉刺激的感知检测能力来探测，在快速眼动的时间周围强烈受损。这种被称为扫视抑制的鲁棒感知现象通常归因于直接从眼球运动命令导出的主动抑制信号。在这里，我们表明，而不是视觉机制，由扫视引起的图像移位激活，可以解释所有的感知特性的扫视抑制，我们已经调查。这种机制始于大脑视觉处理的第一阶段，但不一定是唯一的。至关重要的是，起源于视网膜的神经抑制持续时间超过感知抑制周围的时间扫视，这表明，视网膜外运动相关的信号，而不是造成抑制，可能反而会起到缩短它的作用。我们的研究结果表明，视觉处理机制的感知扫视抑制，在视网膜开始，而不需要调用明确的电机为基础的抑制命令的深远贡献。扫视抑制通常归因于从眼球运动命令导出的主动抑制信号。在这里，作者表明，从视网膜开始的仅视觉机制可以解释感知扫视抑制特性，而不需要基于运动的抑制命令。
Visual sensitivity, probed through perceptual detectability of very brief visual stimuli, is strongly impaired around the time of rapid eye movements. This robust perceptual phenomenon, called saccadic suppression, is frequently attributed to active suppressive signals that are directly derived from eye movement commands. Here we show instead that visual-only mechanisms, activated by saccade-induced image shifts, can account for all perceptual properties of saccadic suppression that we have investigated. Such mechanisms start at, but are not necessarily exclusive to, the very first stage of visual processing in the brain, the retina. Critically, neural suppression originating in the retina outlasts perceptual suppression around the time of saccades, suggesting that extra-retinal movement-related signals, rather than causing suppression, may instead act to shorten it. Our results demonstrate a far-reaching contribution of visual processing mechanisms to perceptual saccadic suppression, starting in the retina, without the need to invoke explicit motor-based suppression commands. Saccadic suppression is frequently attributed to active suppressive signals derived from eye movement commands. Here, the authors show that visual-only mechanisms starting in the retina can account for perceptual saccadic suppression properties without the need for motor-based suppression commands.