title: The spatial pattern of peri-saccadic compression for small saccades.
abstract: In the temporal vicinity of a saccade onset, visual stability is transiently disrupted and briefly flashed visual stimuli undergo a systematic perceptual mislocalization. Specifically, when a stimulus is flashed around saccade onset, localization judgments are grossly biased toward the saccade endpoint. This peri-saccadic compression increases with saccade amplitude. Previous studies of peri-saccadic compression have typically used rather large saccade amplitudes. In the present study, we investigate systematically the pattern of errors for small saccade sizes (2°-10°), taking into account both the amplitude of the saccade and the position of the flashed stimulus (11 positions tested from 1 to 12°). Our results show a weaker compression effect for the smallest saccades. Moreover, we found that the strength of the compression depends on both stimulus side and relative distance to the saccade target.
authors.affiliation: Paris Descartes University, Laboratoire de Psychologie et Neuropsychologie cognitives, FRE3292 CNRS and IUPDP, Boulogne Billancourt, France. louisa.lavergne@parisdescartes.fr
authors.forename: Louisa
authors.initials: L
authors.lastname: Lavergne
authors.forename: Dorine
authors.initials: D
authors.lastname: Vergilino-Perez
authors.forename: Markus
authors.initials: M
authors.lastname: Lappe
authors.forename: Karine
authors.initials: K
authors.lastname: Doré-Mazars
mesh_terms: D005556:Form Perception / Q000502:physiology*; D006801:Humans; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time / Q000502:physiology; D012438:Saccades / Q000502:physiology*; D013028:Space Perception / Q000502:physiology*