The spatial pattern of peri-saccadic compression for small saccades

作者：Lavergne Louisa^*; Vergilino Perez Dorine; Lappe Markus; Dore Mazars Karine

来源：Journal of Vision, 2010, 10(14): 17.

DOI：10.1167/10.14.17

• small saccade
• mislocalization
• compression

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 degrees-10 degrees), taking into account both the amplitude of the saccade and the position of the flashed stimulus (11 positions tested from 1 to 12 degrees). 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.

• 出版日期2010