Juravle Georgiana, Velasco Carlos, Salgado-Montejo Alejandro, Spence Charles
Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf , Hamburg, Germany ; Department of Experimental Psychology, University of Oxford , Oxford, UK.
Department of Experimental Psychology, University of Oxford , Oxford, UK.
Front Psychol. 2015 May 22;6:633. doi: 10.3389/fpsyg.2015.00633. eCollection 2015.
In the present study, we investigated whether indenting the sides of novel objects (e.g., product packaging) would influence where people grasp, and hence focus their gaze, under the assumption that gaze precedes grasping. In Experiment 1, the participants grasped a selection of custom-made objects designed to resemble typical packaging forms with an indentation in the upper, middle, or lower part. In Experiment 2, eye movements were recorded while the participants viewed differently-sized (small, medium, and large) objects with the same three indentation positions tested in Experiment 1, together with a control object lacking any indentation. The results revealed that irrespective of the location of the indentation, the participants tended to grasp the mid-region of the object, with their index finger always positioned slightly above its midpoint. Importantly, the first visual fixation tended to fall in the cap region of the novel object. The participants also fixated for longer in this region. Furthermore, participants saccaded more often, as well saccading more rapidly when directing their gaze to the upper region of the objects that they were required to inspect visually. Taken together, these results therefore suggest that different spatial locations on target objects are of interest to our eyes and hands.
在本研究中，我们假设注视先于抓握，在此前提下调查了按压新奇物体（如产品包装）的边缘是否会影响人们抓握的位置，进而影响他们注视的焦点。在实验1中，参与者抓握一系列定制物体，这些物体设计成类似典型的包装形式，在上部、中部或下部有一个凹陷。在实验2中，记录参与者观看不同尺寸（小、中、大）物体时的眼动情况，这些物体具有实验1中测试的相同三个凹陷位置，同时还有一个没有任何凹陷的对照物体。结果显示，无论凹陷位置在哪里，参与者倾向于抓握物体的中部区域，其食指总是位于中点稍上方。重要的是，首次视觉注视往往落在新奇物体的顶部区域。参与者在该区域的注视时间也更长。此外，参与者扫视更频繁，并且在将目光转向需要视觉检查的物体上部区域时扫视速度更快。综上所述，这些结果表明目标物体上不同的空间位置会引起我们眼睛和手部的关注。
