Garaas Tyler W, Pomplun Marc
University of Massachusetts Boston, Boston, MA 02125-3393, USA.
J Vis. 2011 Jan 3;11(1):2. doi: 10.1167/11.1.2.
The adaptation of an observer's saccadic eye movements to artificial post-saccadic visual error can lead to perceptual mislocalization of individual, transient visual stimuli. In this study, we demonstrate that simultaneous saccadic adaptation to a consistent error pattern across a large number of saccade vectors is accompanied by corresponding spatial distortions in the perception of persistent objects. To induce this adaptation, we artificially introduced several post-saccadic error patterns, which led to a systematic distortion in participants' oculomotor space and a corresponding distortion in their perception of the relative dimensions of a cross-figure. The results indicate a tight coupling between the oculomotor and visual-perceptual spaces that is not limited to misperception of individual visual locations but also affects metrics in the visual-perceptual space. This coupling suggests that our visual perception is continuously recalibrated by the post-saccadic error signal.
观察者的眼球扫视运动适应人工扫视后视觉误差会导致对单个瞬态视觉刺激的感知错误定位。在本研究中，我们证明，在大量扫视向量上同时对一致的误差模式进行扫视适应会伴随着对持久物体感知中的相应空间扭曲。为了诱导这种适应，我们人工引入了几种扫视后误差模式，这导致参与者眼动空间的系统性扭曲以及他们对十字图形相对尺寸感知的相应扭曲。结果表明，眼动空间和视觉感知空间之间存在紧密耦合，这不仅限于对单个视觉位置的误感知，还会影响视觉感知空间中的度量。这种耦合表明我们的视觉感知会通过扫视后误差信号不断重新校准。
