Figure 3.

Localization of combined vertical and horizontal motion on a partial sphere

Experiment 2.

The task and the results of experiment 2 with the sources moving on a semi-sphere.

(A) Example trajectories of “moving” stimuli. Participants were asked to reproduce the start and endpoints, as well as the direction of sources moving both horizontally (within the entire 360° azimuth range) and vertically (+/−30° in elevation) on a partial sphere.

(B) Group results (chance level marked as a dashed line). There were two test conditions: Audio and Tactile. Data are represented as mean ± SD. Statistical comparisons with a Wilcoxon signed-rank test (∗∗∗p < 0.001,∗∗p < 0.01,∗p < 0.05).

(C) Single participants’ scores (with one-third of the participants performing better in the task using touch, as compared to audio).