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. 2018 Sep 19;9:1731. doi: 10.3389/fpsyg.2018.01731

FIGURE 2.

FIGURE 2

Schematic overview of the setup of the experimental sessions. Screen dimensions and other metrics are in cm. Note that the figures are not scaled to actual size. Balls appeared at the top of the screen (Y = 64) and moved downward toward the interceptions axis (Y = 0) at one of two constant vertical velocities. Gray triangles indicate the range of potential ball arrival positions. (A) During the first session (S1) participants intercepted balls individually. The situation depicted here represents the initial conditions for a left position player. (B) In the second (S2) and third (S3) sessions, participants intercepted balls in dyads where on player started on the left side of the screen and the other player started on the right side of the screen.