Modifying Directionality through Auditory System Scaling in a Robotic Lizard

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The peripheral auditory system of a lizard is strongly directional. This directionality is created by acoustical coupling of the two eardrums and is strongly dependent on characteristics of the middle ear, such as interaural distance, resonance frequency of the middle ear cavity and of the tympanum. Therefore, directionality should be strongly influenced by their scaling. In the present study, we have exploited an FPGA–based mobile robot based on a model of the lizard ear to investigate the influence of scaling on the directional response, in terms of the robot’s performance in a phonotaxis task. The results clearly indicate that the model’s frequency response scales proportionally with the model parameters.

Original languageEnglish
Title of host publicationFrom Animals to Animats 11 : 11th International Conference on Simulation of Adaptive Behavior, SAB 2010, Paris - Clos Lucé, France, August 25-28, 2010. Proceedings
EditorsStéphane Doncieux, Benoît Girard, Agnès Guillot, John Hallam, Jean-Arcady Meyer, Jean-Baptiste Mouret
Number of pages11
Publication date2010
ISBN (Print)978-3-642-15192-7
Publication statusPublished - 2010
SeriesLecture Notes in Computer Science


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