PMID: 6026673Jul 7, 1967Paper

Frequency sensitivity of single auditory neurons in the gecko Coleonyx variegatus

Science
N Suga, H W Campbell

Abstract

Although acoustic communication is not pronounced in reptiles, analysis of single auditory neurons in the medulla oblongata shows that the cochlea is a frequency analyser. Auditory neurons of the lizard Coleonyx variegatus respond to acoustic stimuli over a range of less than 0.1 to 17 kilohertz and are maximally responsive between 0.8 and 2.0 kilohertz. The frequencies to which they are most sensitive differ from neuron to neuron, ranging from 0.11 to 4 kilohertz. Some neurons have an inhibitory area which greatly overlaps the response area, so that inhibitory areas do not seem to sharply tune the response area at this level of the auditory tract. The inhibitory area is responsible for producing in some neurons a phasic response and nonmonotonic relation between sound intensity and number of impulses. The response pattern shows a tendency to change from tonic to phasic in more advanced auditory centers. This may serve to code rapid changes in the acoustic stimuli.

References

Jan 1, 1967·The Journal of General Physiology·G von Békésy
Nov 1, 1958·Journal of Neurophysiology·Y KATSUKIT WATANABE
Apr 1, 1964·Proceedings of the National Academy of Sciences of the United States of America·E G WEVERJ A VERNON

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Citations

Aug 1, 1972·The Journal of Experimental Zoology·G A Manley
Mar 1, 1976·The Journal of Experimental Zoology·Y L Werner
Jun 1, 1974·Journal of Morphology·E G Wever
Feb 1, 1972·Quarterly Reviews of Biophysics·A R Moller
Dec 15, 1977·The Journal of Comparative Neurology·R H Browner, K Rubinson
Feb 1, 1985·The Journal of Comparative Neurology·M R Miller
Dec 1, 1972·Evolution; International Journal of Organic Evolution·Geoffrey A Manley

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