Summary
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1.
Doppler shift compensation (DSC) behavior of the greater horseshoe bat,Rhinolophus ferrumequinum, was compared during spontaneous emission of echolocation sounds and during electrically elicited vocalization.
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2.
At low to moderate intensities of electrical stimulation in regions near the midbrain periaqueductal grey, the Doppler shift compensation performance showed the same characteristics as during spontaneous emission. This was also true for artificially increased emission rates (Fig. 1).
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3.
Electrically induced high sound emission rates improved the dynamic response properties of the Doppler shift compensation control system (Figs. 2, 3, 4).
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4.
At deep caudal stimulation sites in the midbrain electrical stimulation at moderate to high intensities led either to reversible suppression of DSC, or to reduction and distortion of the compensation (Fig. 5).
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Abbreviations
- DSC :
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Doppler shift compensation
- RF :
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resting frequency
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Schuller, G. Influence of echolocation pulse rate on Doppler shift compensation control system in the greater horseshoe bat. J. Comp. Physiol. 158, 239–246 (1986). https://doi.org/10.1007/BF01338567
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DOI: https://doi.org/10.1007/BF01338567