Angular range dominates hearing-driven motion detection over speed and duration.

Evidence

For any trial the starting point, motion direction, velocity (53–2400°/s), duration (30–225 ms) and angular range (12–72°) of the noise sweeps were randomized. Each test stimulus had a motion direction being opposite to that of the reference stimuli. Stimuli were presented in the frontal or the lateral auditory space. … The angular extent of the motion had a large effect on the owl’s discrimination sensitivity allowing a better discrimination for a larger angular range of the motion. In contrast, stimulus velocity or stimulus duration had a smaller, although significant effect. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3178 (#corroborates, via linked claim)

Categorization

• XREF: connects to: Synchronized visual motion captures perceived sound direction within 30 degrees — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1466; Barn owls can be trained to report acoustic motion direction changes — Dijk, Pim van, Physiology, Psychoacoustics and…, 3178; Inhibition and adaptation, not velocity matching, drive motion direction selectivity (+3 more)

Related

• Inhibition and adaptation, not velocity matching, drive motion direction selectivity (similarity 0.94)
• Angular range, not velocity, dominates barn owl auditory motion discrimination sensitivity (similarity 0.91)
• Barn owls can be trained to report acoustic motion direction changes (similarity 0.90)
• Frontal space yields better auditory motion discrimination than lateral space (similarity 0.89)
• Barn owls do not decode sound motion by comparing start and end points (similarity 0.88)
• Motion direction perception requires a much larger angular sweep than static localization (similarity 0.88)
• Auditory motion direction detection requires much larger angular sweeps than static sound localization does. (similarity 0.88)
• Auditory motion perception is not computed from endpoint comparisons (similarity 0.88)
• Barn owls distinguish sound motion only across spans far exceeding their static localization acuity (similarity 0.88)
• Motion perception improves with larger sweep angles more than with faster sweeps (similarity 0.87)
• Stimulus velocity badly predicts owl motion discrimination because duration and range co-determine it (similarity 0.87)
• Auditory motion-direction neurons in barn owls tolerate very broad velocity ranges (similarity 0.84)
• Owls require 24° of motion but only 3° for static localization (similarity 0.81)
• Stimulus duration and angular velocity are interdependent in auditory motion (similarity 0.81)
• Owls detect direction changes more readily in frontal than lateral space. (similarity 0.81)

Broader Connections

• Angular range, not velocity, dominates barn owl auditory motion discrimination sensitivity #corroborates (0.92) — Dijk, Pim van, Physiology, Psychoacoustics and…, 3178
• The minimum audible angle quantifies the just-detectable change in sound source position #qualifies (0.72)