Abstract
HIGH-SPEED photography1 and an acoustic doppler method2,3 have shown that rapid ear movements of Rhinolophus ferrumequinum4,5 are closely correlated to the production of the constant frequency signals used for echolocation. In addition to independent “searching” movements, the pinnae make alternating movements with an excursion of up to 1 cm at the tip, thus describing an arc of about 30°. The simultaneous movements (forwards by one ear, backwards by the other) may take less than 20 ms and are generally associated with the emission of one ultrasonic pulse through the nose-leaf. The one to one correspondence is not always exact but is seldom much in error even at the highest recorded pulse repetition rates of up to 60–80 pulses/s.
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References
Griffin, D. R., Dunning, D. C., Cahlander, D. A., and Webster, F. A., Nature, 196, 1185 (1962).
Pye, J. D., Flinn, M., and Pye, A., Nature, 196, 1187 (1962).
Pye, J. D., Ergebn. Biol., 26, 12 (1963).
Möhres, F. P., Z. Vergl. Physiol., 34, 547 (1953).
Schneider, H., and Möhres, F. P., Z. Vergl. Physiol., 44, 1 (1960).
Pye, J. D., and Flinn, M., Ultrasonics, 2, 23 (1964).
Pye, J. D., Ultrasonics, 6, 32 (1968).
Möhres, F. P., and Kulzer, E., Naturwissenschaften, 42, 131 (1955); Möhres, F. P., and Kulzer, E., Verh. dt. Zool. Ges. Erlangen, 59 (1955).
Henson, O. W., Animal Sonar Systems (edit. by Busnel, R.-G.), 949 (Jouy-en-Josas, 1967).
Pye, J. D., Animal Sonar Systems (edit. by Busnel, R.-G), 1121 (Jouy-en-Josas, 1967).
Pye, J. D., J. Laryngol. Otol, 74, 718 (1960).
Schnitzler, H.-U., Z. Vergl. Physiol., 57, 376 (1968).
Kramer, E. L., Symp. Agard Avionics Panel on Advanced Navigation Techniques, Milan, 1967 (in the press).
Häusler, E., and Steffen, P., Ultrasonics, 7, 188 (1969).
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PYE, J., ROBERTS, L. Ear Movements in a Hipposiderid Bat. Nature 225, 285–286 (1970). https://doi.org/10.1038/225285a0
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DOI: https://doi.org/10.1038/225285a0
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