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http://hdl.handle.net/1903/6854
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| Title: | Sound Localization by Echolocating Bats |
| Authors: | Aytekin, Murat |
| Advisors: | Moss, Cynthia F. |
| Department/Program: | Psychology |
| Type: | Dissertation |
| Sponsors: | Digital Repository at the University of Maryland
University of Maryland (College Park, Md.) |
| Keywords: | Psychology, Experimental (0623)
Physics, Acoustics (0986)
echolocation, bats, sonar, sensorimotor, sound localization, spatial perception |
| Issue Date: | 14-May-2007 |
| Abstract: | Echolocating bats emit ultrasonic vocalizations and listen to echoes reflected back from objects in the path of the sound beam to build a spatial representation of their surroundings. Important to understanding the representation of space through echolocation are detailed studies of the cues used for localization, the sonar emission patterns and how this information is assembled.
This thesis includes three studies, one on the directional properties of the sonar receiver, one on the directional properties of the sonar transmitter, and a model that demonstrates the role of action in building a representation of auditory space. The general importance of this work to a broader understanding of spatial localization is discussed.
Investigations of the directional properties of the sonar receiver reveal that interaural level difference and monaural spectral notch cues are both dependent on sound source azimuth and elevation. This redundancy allows flexibility that an echolocating bat m... |
| URI: | http://hdl.handle.net/1903/6854 |
| Appears in Collections: | Psychology Theses and Dissertations
UM Theses and Dissertations
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Size | Format | No. of Downloads |
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| umi-umd-4343.pdf | | 4516Kb | Adobe PDF | 545 | View/Open |
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