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Visual Feedback in Hand Tremor

Nature volume 216, pages 583–584 (1967)Cite this article

Abstract

IN the experimental situation with which we are concerned here a subject holds a short, stiff, vertical joystick with the finger tips of his right hand and attempts to press to the left with a constant force of, say, 1 kg. His forearm is supported in a horizontal trough. The force exerted is measured by a strain gauge and is made to deflect the spot of a cathode ray tube watched by the subject. The subject's task is to keep the spot at a mark on the tube face corresponding to the required force. He does not succeed, the spot dancing unceasingly around the target position. These errors we refer to as tremor.

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References

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Author notes

  1. P. A. MERTON

    Present address: Physiological Laboratory, Cambridge

  2. H. B. MORTON

    Present address: National Hospital, Queen Square, London, WC1

  3. C. RASHBASS

    Present address: The Institute of Psychiatry, De Crespigny Park, London, SE5

Authors and Affiliations

  1. National Physical Laboratory, Teddington, Middlesex

    P. A. MERTON, H. B. MORTON & C. RASHBASS

Authors
  1. P. A. MERTON
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  2. H. B. MORTON
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  3. C. RASHBASS
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MERTON, P., MORTON, H. & RASHBASS, C. Visual Feedback in Hand Tremor. Nature 216, 583–584 (1967). https://doi.org/10.1038/216583a0

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