Towards And Reverse Eye Jump Task Orientation Effect

Pro- and antisaccade tasks are two kinds of popular saccade paradigms. In current research, EyeLinkⅡeye tracker was used to explore the direction-eccentricity effect in pro- and antisaccade tasks of younger participants, that is the systematical influences on saccade performance of the direction and eccentricity of target stimulus. The design was within-subject design, with saccade task, target direction and target eccentricity all as variables. Following conclusions are found: (1) antisaccade task is more difficult than prosaccade task, mainly because of a higher direction error rate and a longer saccade latency of the first saccade in antisaccade task; (2) there were direction effects in antisaccade task but not in prosaccade task, mainly embody a higher direction error rate and a shorter latency of the first directional error saccade, and a longer correction latency, when target were presented at the right side of the fixation area; (3) there were eccentricity effects in both prosaccade and antisaccade tasks, that is, saccade latency, amplitude and peak velocity all increased with the increasing of target eccentricity.