An owl is sitting in on a tree branch and hears a sound coming from a...
An owl is sitting in on a tree branch and hears a sound coming from a mouse on the ground directly in front of the owl. Describe how the owl would be able to determine the exact location of the owl based on how the sound is perceived in its ears.
Homework Answers
The Barn Owl's sensitive hearing is enhanced by its facial ruff, a concave surface of stiff dark-tipped feathers. The ruff functions as a reflector, channeling sounds into the ears. Once a sound is detected, the owl orients toward it and accurately pinpoints its location to within 1.5 degrees in both horizontal and vertical planes. The cue used to determine whether a sound comes from the right, left, or straight ahead is the difference in time that it takes for a sound to reach each ear. The owls' ears are linked to specialized cells contained within a discrete region of the midbrain. Each cell is sensitive to a unique combination of time and intensity differentials and responds only to sound issuing from one small area in space. The Barn Owl's brain thus contains a "neural map" of auditory space.
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driven by the same signal generator, that are a distance h (5m)
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apart. You walk in the positive direction starting at y=0 m, along
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sound is 340 m/s and the frequency is 170 HZ. As you walk, how many
times and where will you hear a maximum sound?
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