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Fig. 8. Individual subjects tended to favor different head orientations in our
auditory and visual two-alternative forced-choice (2AFC) tasks, however each
subject oriented similarly in both tasks (see text). Normalized distributions
of head orientations used by subjects 325 (A), 392 (B) and 000 (C) in our
auditory (open circles) and visual (closed circles) 2AFC discrimination tasks.
Plotted above each distribution is the proportion of trials in which subjects
flew to the correct response perch in the visual task. Distributions for the
auditory task (open circles) are the same as those shown in
Fig. 6.