Fig. 8.

The proportion of correct responses given for (A) echo identification, (B) scrambled vs. route identification, (C) stimulus identification and (D) route identification. Data from sighted participants are shown as grey bars, with error bars representing the standard error of the mean across sighted participants. Data from experts who did only a single session without training are shown as open squares. For comparison, they have been plotted as ‘post’ training, i.e. after sighted participants have had 20 session of echo-acoustic training with the virtual navigation task.