Baumeler Denise, Schönhammer Josef G, Born Sabine
Faculté de Psychologie et des Sciences de l'Éducation, Université de Genève, 40 Boulevard du Pont d'Arve, 1205 Genève, Switzerland.
Faculté de Psychologie et des Sciences de l'Éducation, Université de Genève, 40 Boulevard du Pont d'Arve, 1205 Genève, Switzerland.
Vision Res. 2020 May;170:46-52. doi: 10.1016/j.visres.2020.03.009. Epub 2020 Apr 2.
A briefly flashed peripheral cue has been shown to repulse the perceived position of a subsequently presented foveal probe - a bias called the Attentional Repulsion Effect (ARE). While this bias has originally been assumed to reflect attentional capturing by the cue, its attentional nature has recently been questioned. To investigate the ARE's attentional properties, we recorded microsaccades as an attentional marker in the ARE paradigm. Microsaccades, small fixational eye movements performed during fixation, have previously been described to reflect the dynamics of spatial attention deployment. Our results favor an attentional explanation for the ARE: In trials in which an ARE was found, microsaccades were directed more often toward the cue, presumably reflecting the covert shift of attention. In contrast, more cue-incongruent microsaccades were observed in trials in which no ARE was found. Therefore, both repulsion as well as measured microsaccade modulations, are most likely an outcome of the preceding shifts of covert attention.
短暂闪现的外周线索已被证明会使随后呈现的中央凹探测刺激的感知位置产生偏移——这种偏差被称为注意排斥效应（ARE）。虽然这种偏差最初被认为反映了线索对注意力的捕获，但最近其注意性质受到了质疑。为了研究ARE的注意特性，我们在ARE范式中记录了微眼跳作为一种注意标记。微眼跳是在注视过程中发生的小的注视性眼动，此前已被描述为反映空间注意部署的动态过程。我们的结果支持对ARE的一种注意解释：在发现有ARE的试验中，微眼跳更频繁地指向线索，大概反映了注意力的隐蔽转移。相比之下，在未发现ARE的试验中，观察到更多与线索不一致的微眼跳。因此，排斥以及测量到的微眼跳调制很可能都是先前隐蔽注意转移的结果。
