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Tyler W. Garaas, Marc Pomplun; Distorted object perception following whole-field adaptation of saccadic eye movements. Journal of Vision 2011;11(1):2. doi: https://doi.org/10.1167/11.1.2.
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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.
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