Perisaccadic perceptual changes in pathologically slow saccades

Introduction: Despite frequent saccadic gaze shifts during visual exploration we perceive the outer world as stable. Here, we make use of a visual illusion to infer on the neural mechanisms that support space constancy around saccadic eye movements: Briefly flashed stimuli are systematic-cally mislocalized around the onset of saccadic eye movements and sometimes not seen at all. Perisaccadic mislocalization and saccadic suppression are believed to partly result from extraretinal signals associated with saccadic motor commands. Recently, we observed that a considerable part of inter-individual idiosyncrasies in p…