Abstract
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.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Christensen-Dalsgaard, J.: Directional hearing in nonmammalian tetrapods. In: Popper, A.N., Fay, R.R. (eds.) Sound Source Localization. Springer Handbook of Auditory Research, vol. 25, pp. 67–123. Springer, New York (2005)
Wever, E.G.: The Reptile Ear: Its Structure and Function. Princeton University Press, Princeton (1978)
Christensen-Dalsgaard, J., Manley, G.A.: Acoustical coupling of lizard eardrums. JARO-Journal of the Association for Research in Otolaryngology 9(4), 407–416 (2008)
Christensen-Dalsgaard, J., Manley, G.A.: Directionality of the lizard ear. Journal of Experimental Biology 208(6), 1209–1217 (2005)
Klump, G.M.: Sound localization in birds. In: Dooling, R.J., Fay, R.R., Popper, A.N. (eds.) Comparative Hearing: Birds and Reptiles. Springer Handbook of Auditory Research, vol. 13, pp. 249–307. Springer, Heidelberg (2000)
Michelsen, A., Popov, A., Lewis, B.: Physics of directional hearing in the cricket Gryllus bimaculatus. Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology 175(2), 153–164 (1994)
Michelsen, A.: Biophysics of sound localization in insects. In: Hoy, R.R., Popper, A.N., Fay, R.R. (eds.) Comparative Hearing: Insects. Springer Handbook of Auditory Research, vol. 10, pp. 18–62. Springer, Heidelberg (1998)
Zhang, L., Hallam, J., Christensen-Dalsgaard, J.: Modelling the peripheral auditory system of lizards. In: Nolfi, S., Baldassarre, G., Calabretta, R., Hallam, J.C.T., Marocco, D., Meyer, J.-A., Miglino, O., Parisi, D. (eds.) SAB 2006. LNCS (LNAI), vol. 4095, pp. 65–76. Springer, Heidelberg (2006)
Shaikh, D., Hallam, J., Christensen-Dalsgaard, J., Zhang, L.: A braitenberg lizard: Continuous phonotaxis with a lizard ear model. In: Mira, J., Ferrández, J.M., Álvarez, J.R., de la Paz, F., Toledo, F.J. (eds.) IWINAC 2009. LNCS, vol. 5602, pp. 439–448. Springer, Heidelberg (2009)
Shaikh, D., Hallam, J., Christensen-Dalsgaard, J.: Control of a braitenberg lizard in a phonotaxis task with decision models. In: Kyriacou, T., Nehmzow, U., Melhuish, C., Witkowski, M., (eds.): Technical Report Series: Proceedings of Towards Autonomous Robotic Systems, University of Ulster, Intelligent Systems Research Centre, University of Ulster, pp. 48–54 (2009)
Braitenberg, V.: Vehicles: Experiments in Synthetic Psychology. MIT Press, Cambridge (1984)
Fletcher, N.H.: Acoustic Systems in Biology. Oxford University Press, USA (1992)
Fletcher, N.H., Thwaites, S.: Physical models for the analysis of acoustical systems in biology. Quarterly Reviews of Biophysics 12(1), 25–65 (1979)
Heffner, H.E., Heffner, R.S.: Hearing. Comparative Psychology: A Handbook, pp. 290–303 (1998)
Heffner, H.E., Heffner, R.S.: High-frequency hearing. The Senses: A Comprehensive Reference. Audition 3, 55–60 (2008)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2010 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Shaikh, D., Hallam, J., Christensen-Dalsgaard, J. (2010). Modifying Directionality through Auditory System Scaling in a Robotic Lizard. In: Doncieux, S., Girard, B., Guillot, A., Hallam, J., Meyer, JA., Mouret, JB. (eds) From Animals to Animats 11. SAB 2010. Lecture Notes in Computer Science(), vol 6226. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-15193-4_8
Download citation
DOI: https://doi.org/10.1007/978-3-642-15193-4_8
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-15192-7
Online ISBN: 978-3-642-15193-4
eBook Packages: Computer ScienceComputer Science (R0)