Abstract
Most species of bats making echolocation use the sound pressure level (SPL) and Doppler-shifted frequency of ultrasonic echo pulse to measure the size and velocity of target. The neural circuits for detecting these target features are specialized for amplitude and frequency analysis of the second harmonic constant frequency (CF2) component of Doppler-shifted echoes. The neuronal circuits involved in detecting these features have been well established. However, it is not yet clear the neural mechanism by which these neuronal circuits detect the amplitude and frequency of echo signals. We present here neural models for detecting SPL amplitude and Doppler-shifted frequency of echo sound reflecting a target. Using the model, we show that the tuning property of frequency is changed depending on the feedback connections between cortical and subcortical neurons. We also show SPL amplitude is detected by integrating input signals emanating from ipsi and contralatreal subcortical neurons.
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References
Suga, N.: Biosonar and neural computation in bats. Sci. Amer. 262, 60–68 (1990)
Suga, N.: Echolocation: Choleotopic and computational maps. In: Arbib, M.A. (ed.) The Handbook of Brain Theory and Neural Networks, 2nd edn., pp. 381–387. MIT Press (2003)
Suga, N., Manabe, T.: Neural bases of amplitude-spectrum representation in auditory cortex of the mustached bat. J. Neurophysiol. 47, 225–255 (1982)
Xiao, Z., Suga, N.: Reorganization of chocleotopic map in the bat’s auditory system by inhibition. Proc. Natl. Acad. Sci. USA 99, 15743–15748 (2002)
Suga, N., Jen, P.: Peripheral control of acoustic signals in the auditory system of echolocating bats. J. Exp. Biol. 62, 277–311 (1975)
Suga, N., Niwa, H., Taniguchi, I., Margoliash, D.: The personalized auditory cortex of the mustached bat: adaptation for echolocation. J. Neurophysiol. 58, 643–654 (1987)
Suga, N.: Amplitude spectrum representation in the Doppler-shifted-CF processing area of the auditory cortex of the mustache bat. Science 196, 64–67 (1977)
Liu, W., Suga, N.: Binaural and commissural organization of the primary auditory cortex of the mustached bat. J. Comp. Physiol. A 81, 599–605 (1997)
Koch, C.: Biophysics of Computation. Oxford Univ. Press, New York (1999)
Nagase, Y., Kashimori, Y.: Modulation of Corticofugal Signals by Synaptic Changes in Bat’s Auditory System. In: Wong, K.W., Mendis, B.S.U., Bouzerdoum, A. (eds.) ICONIP 2010, Part I. LNCS, vol. 6443, pp. 124–131. Springer, Heidelberg (2010)
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Mutoh, Y., Kashimori, Y. (2011). Neural Model of Auditory Cortex for Binding Sound Intensity and Frequency Information in Bat’s Echolocation. In: Lu, BL., Zhang, L., Kwok, J. (eds) Neural Information Processing. ICONIP 2011. Lecture Notes in Computer Science, vol 7062. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-24955-6_8
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DOI: https://doi.org/10.1007/978-3-642-24955-6_8
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