Sound localization behavior of the green treefrog (Hyla cinerea) and the barking treefrog (H. gratiosa) |
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| Authors: | Albert S Feng H Carl Gerhardt Robert R Capranica |
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| Institution: | (1) Section of Neurobiology and Behavior and School of Electrical Engineering, Cornell University, 14853 Ithaca, New York, USA;(2) Division of Biological Sciences, University of Missouri, 65201 Columbia, Missouri, USA;(3) Section of Neurobiology and Behavior and School of Electrical Engineering, Cornell University, 14853 Ithaca, New York, USA;(4) Present address: Department of Neurosciences, Neurobiology Unit, Scripps Institute of Oceanography, University of California, 92037 La Jolla, California, USA |
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| Abstract: | Summary Female treefrogs (Hyla cinerea andH. gratiosa) can accurately localize a sound source (playback of male mating calls) if both ears are intact. When the sensitivity of one eardrum is attenuated, by coating it with a thin layer of silicone grease, females no longer can locate the sound source. This study demonstrates that female anurans rely on interaural cues for localization of a calling male. The neural basis for an anuran's sound localization ability presumably involves binaural convergence on single cells in the central auditory nervous system.This work was supported by research grants from the National Science Foundation and the U.S. Public Health Service. The assistance of Anne J.M. Moffat in measuring the directional characteristics of the loudspeaker is gratefully appreciated. |
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