Phase Versus Frequency in Caiman Primary Auditory Fibres: Is There a Travelling Wave?
Anatomically the inner ear of the caiman is similar to that of mammals (v. Düring et al., 1974). Its primary afferent auditory fibres also show a number of properties similar to those of mammals (Klinke and Pause, 1977, 1980). A major difference is the shift of the characteristic frequency of caiman auditory fibres towards lower frequencies with decreasing body temperature (Klinke and Smolders, 1977). This phenomenon was also shown in other lower vertebrates (toad, Moffat and Capranica, 1976 and gecko, Eatock and Manley, 1976), but does not occur in cat primary fibres (Smolders and Klinke, 1977). Likewise, no, effect of temperature shift could be found in humans possessing genuine absolute pitch (Emde and Klinke, 1977).
KeywordsStimulus Frequency Basilar Membrane Auditory Nerve Fiber Basilar Papilla Primary Fibre
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