Journal of comparative physiology

, Volume 100, Issue 3, pp 211–219 | Cite as

Behavioural audiograms from the bat,Rhinolophus ferrumequinum

  • Glenis R. Long
  • Hans-Ulrich Schnitzler


A conditioned heart rate and muscular activity response was used to measure behavioural audiograms inRhinolophus ferrumequinum. The audiograms are very similar to the evoked potential “on” response threshold curves. They show a low frequency roll off of 30 dB per octave below 15 kHz and three areas of low threshold with SPLs of about 0 dB separated by two insensitivity peaks with SPLs of 25–30 dB. The sharply tuned threshold minima above 80 kHz (Q-values between 45–85) are followed by a high frequency roll off of 160–170 dB/octave.


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Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • Glenis R. Long
    • 1
  • Hans-Ulrich Schnitzler
    • 1
  1. 1.Arbeitsgruppe Neuro und Rezeptorphysiologie, Fachbereich BiologieUniversitÄt FrankfurtFrankfurtFederal Republic of Germany

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