Stimulus velocity badly predicts owl motion discrimination because duration and range co-determine it

Evidence

When comparing sensitivity for noise sweeps of similar velocities at different durations (Fig. 2 , 3 ), we had expected to find them to be similar across conditions. In contrast to our expectation, stimulus velocity was a rather bad predictor of the owls’ behavioural performance. This can be explained, however, by the interaction of duration and angular range that determines stimulus velocity. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3197