**Participants.** 10 naive participants will be recruited throughout the Department of Psychology and Martin Rolfs' lab, due to the Covid-19-related restrictions on data collection. Given the situation, the authors may also serve as study participants. Each participant will complete 2 sessions of approximately 45 minutes each. We will obtain written informed consent from all subjects prior to inclusion in the study. **Apparatus.** The apparatus will be the same as in the first experiment. Please refer to [osf.io/6rb29/, Apparatus][1]. **Procedure.** The procedure is similar to the one applied in the first experiment ([osf.io/6rb29/, Procedure][2]). The differences are: 1. Only one post-motion mask duration will be used, i.e., 50 ms. This condition led to medium performance in Exp. 1, so that ceiling effects can be avoided. 2. As shown in Figure 1, three new motion conditions were added: Incongruent motion direction with incongruent features (-2), incongruent motion direction with congruent features (-1), and congruent motion direction with incongruent features (2). Conditions 0 and 1 correspond to the conditions used in the first experiment. 3. All object move during the motion interval, not only the target. When continuous motion is present (condition -2, -1, 1, and 2) the entire array rotates in a CW or CCW manner. ![Figure 1][3] **Figure 1.** Plot of stimulus movement in respective experimental conditions. The coding for intra-saccadic motion conditions is as follows: feature and direction invalid (-2), feature valid and direction invalid (-1), no continuous motion (0), feature valid and direction valid (1), feature invalid and direction valid (2). **Stimuli.** Stimuli will be the same as those used previously ([osf.io/6rb29/, Stimuli][4]). **Design.** Each of the two sessions will consist of 810 trials. Altogether there will be 1620 Trials. They are determined by the following factors: - Stimulus cued (6 levels). Participants will make 10 dva saccades to one of six stimulus locations. - Initial position of the stimulus array (2 levels). Initial positions of stimuli 1-6 in angle relative to screen center can be either {0, 60, 120, 180, 240, 300} degrees (Figure 1, start at 0 deg) or {30, 90, 150, 210, 270, 330} degrees (Figure 1, start at 30 deg). - Global movement direction (3 levels). Stimulus arrays will rotate for 30 degrees in a clockwise direction (Figure 1, CW), counter-clockwise direction (Figure 1, CCW), or remain static altogether (Figure 1, static). - Type of stimulus motion (5 levels). Movement of the cued stimulus will either occur in a continuous (conditions -2, -1, 1, or 2) or step-wise fashion (condition 0), thus inducing an intra-saccadic motion streak or not, respectively. Conditions with continuous motion can be subdivided in 4 orthogonal conditions, coding whether direction and polarity/feature of the moving object is valid or invalid (see the drawing in Figure 2). ![Figure 2][5] [1]: https://osf.io/6rb29/ [2]: https://osf.io/6rb29/ [3]: https://mfr.de-1.osf.io/export?url=https://osf.io/cgwyf/?direct%26mode=render%26action=download%26public_file=False&initialWidth=774&childId=mfrIframe&parentTitle=OSF+%7C+position_plot.svg.png&parentUrl=https://osf.io/cgwyf/&format=2400x2400.jpeg [4]: https://osf.io/6rb29/ [5]: https://mfr.de-1.osf.io/export?url=https://osf.io/97pfk/?direct%26mode=render%26action=download%26public_file=False&initialWidth=774&childId=mfrIframe&parentTitle=OSF+%7C+design_drawing.jpeg&parentUrl=https://osf.io/97pfk/&format=1000x1000.jpeg