SOUND LOCALIZATION BEHAVIOR OF GREEN TREEFROG (HYLA-CINEREA) AND BARKING TREEFROG (HYLA-GRATIOSA)

Female treefrogs (H. cinerea and H. gratiosa) could accurately localize a sound source (playback of male mating calls) if both ears were intact. When the sensitivity of 1 eardrum was attenuated, by coating it with a thin layer of silicone grease, females no longer could locate the sound source. Female anurans rely on interaural cues for localization of a calline male. The neural basis for an anuran''s sound localization ability presumably involves binaural convergence on single cells in the auditory CNS.