Figure 1. Illustrations of experimental procedures.

A) Example movement. On each trial, subjects experienced a movement in the horizontal plane, for example 45°, as shown here. B) Response dial for identification task. Subjects indicated their heading direction after each movement by adjusting the orientation of an arrow within a dial on the screen. The setting shown here matches the movement from panel A). C) Investigated heading directions for the identification procedure (grey) and the control procedure (black).