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The “EE-OO machine”—An apparatus which controls a videotape recorder by detecting specific vocalisations

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Abstract

This paper describes a device for detecting a specific vocalisation inMacaca fascicularis. It is used to control a videotape recorder and therefore to record behaviour following the vocalisation. It is activated if two pre-set frequencies occur in a particular order and within a specified time interval. The running time of the VTR is also pre-set and can be varied within wide limits. The circuitry is relatively simple, being based on readily available integrated circuits. In use the machine has proved to be sensitive and to show a high level of specificity.

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References

  • Chance M. R. A., in press. Status referents in long-tailed macaques (Macaca fascicularis): Precursors and effects of a female rebellion.

  • Hinde R. A., 1974.Biological Bases of Human Social Behaviour. McGraw-Hill, N.Y., pp. 193–228.

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Authors and Affiliations

  1. Sub-department of Ethology, The Medical School, Edgbaston, Birmingham 15, England

    J. A. Humphreys & J. H. Mackintosh

  2. Department of Biochemistry, The University, Edgbaston, Birmingham 15, England

    R. J. Chance

  3. Ethology Department, Uffculme Clinic, Queensbridge Road, Moseley, Birmingham 13, England

    M. R. A. Chance

Authors
  1. J. A. Humphreys
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  2. J. H. Mackintosh
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  3. R. J. Chance
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  4. M. R. A. Chance
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Humphreys, J.A., Mackintosh, J.H., Chance, R.J. et al. The “EE-OO machine”—An apparatus which controls a videotape recorder by detecting specific vocalisations. Primates 19, 761–764 (1978). https://doi.org/10.1007/BF02373642

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  • DOI: https://doi.org/10.1007/BF02373642

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