Related Experiment Video
Updated: Dec 2, 2025

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
Published on: December 20, 2024
Crocodiles use both interaural level differences and interaural time differences to locate a sound source
L Papet1, M Raymond1, N Boyer1
1Equipe Cognition Auditive et Psychoacoustique, Centre de Recherche en Neurosciences de Lyon, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5292, Institut National de la Santé et de la Recherche Médicale U1028, Université Lyon 1, Lyon, France.
Abstract:
To explore how crocodilians locate a sound source, two Nile crocodiles (Crocodylus niloticus) were trained to swim towards an acoustic target. Using filtered versions of synthesized stimuli, the respective roles of interaural level differences (ILDs) and interaural time differences (ITDs), which are the two main cues providing information on sound source position, were tested. This study shows that crocodiles rely on both ILDs and ITDs to locate the spatial direction of a sound source and that their performance is lower when one of the cues is lacking.
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