Meermeier Annegret, Gremmler Svenja, Lappe Markus
Institute for Psychology, University of Muenster, Muenster, Germany.
Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Muenster, Muenster, Germany.
J Vis. 2017 Sep 1;17(11):13. doi: 10.1167/17.11.13.
Saccadic adaptation aims at keeping saccades accurate to enable precise foveation of objects. It has been believed to be a rather low-level adjustment, responding chiefly to direction and magnitude of postsaccadic position error. However, recent studies have shown that image content can modify saccadic adaptation. Adaptation is more complete for saccades toward socially relevant human figures in comparison to noise when time constraints exist. In the present experiment, we show that saccadic adaptation is also susceptible to the novelty of a stimulus. In a scanning adaptation paradigm, 20 subjects participated in two sessions of forward adaptation to one position at which the same human picture was always displayed versus a position at which a new human figure was presented in every trial. Saccadic adaptation was more complete to the novel-target position. This suggests that novelty can increase oculomotor learning and corroborates the claim that saccadic adaptation includes influences that reflect the target's visual properties.
眼跳适应旨在保持眼跳准确，以便精确注视物体。人们一直认为这是一种相当低级的调整，主要对眼跳后位置误差的方向和大小做出反应。然而，最近的研究表明，图像内容可以改变眼跳适应。当存在时间限制时，与注视噪声相比，朝向具有社会相关性的人物的眼跳适应更完整。在本实验中，我们表明眼跳适应也易受刺激新颖性的影响。在扫描适应范式中，20名受试者参加了两个阶段的正向适应，一个阶段是始终在同一位置显示相同的人物图片，另一个阶段是每次试验都呈现新的人物图片。对新目标位置的眼跳适应更完整。这表明新颖性可以增强眼球运动学习，并证实了眼跳适应包括反映目标视觉属性的影响这一观点。
