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Visual Effects on Finger Tremor in Normal Subjects and Anxious Patients

Published online by Cambridge University Press:  29 January 2018

J. R. G. Carrie
J. R. G. Carrie*
Affiliation:
Lecturer, Institute of Psychiatry, Maudsley Hospital, Denmark Hill, London, S.E.5
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Extract

Sutton and Sykes (1956) studied the characteristics of the tremor superimposed on a voluntary muscular contraction under two conditions; (a) when the subjects were provided with a visual display of the accuracy with which they were maintaining a constant force, and (b) when they carried out the same task with the eyes closed. It was observed that when the subjects' eyes were closed, the tremor amplitude at 8–9 c/s (cycles per second) was sometimes relatively much diminished. In some subjects there was evidence of a smaller reduction in amplitude at other frequencies. Young (1933) had made similar findings using a less satisfactory technique. The findings of these workers have been confirmed and extended in another investigation (Carrie, 1965).

Type
Research Article
Information
The British Journal of Psychiatry , Volume 111 , Issue 481 , December 1965 , pp. 1181 - 1184
Copyright
Copyright © Royal College of Psychiatrists, 1965 

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References

Brumlik, J. (1962). “On the nature of normal tremor.” Neurology (Minneap.), 12, 159–179.CrossRefGoogle ScholarPubMed
Carrie, J. R. G. (1965). “Finger tremor with an amplified visual display of position and following eyeclosure.” J. neurol. Sci. (In press).Google Scholar
Halliday, A. M., and Redfearn, J. W. T. (1956). “An analysis of the frequencies of finger tremor in healthy subjects.” J. Physiol., 134, 600–611.CrossRefGoogle ScholarPubMed
Halliday, A. M., and Redfearn, J. W. T. (1958). “Finger tremor in tabetic patients and its bearing on the mechanism producing the rhythm of physiological tremor.” J. Neurol. Neurosurg. Psychiat., 21, 101–108.CrossRefGoogle ScholarPubMed
Lippold, O. C. J., Redfearn, J. W. T., and Vuco, J. (1959). “The frequency analysis of tremor in normal and thyrotoxic subjects.” Clin. Sci., 18, 587–595.Google Scholar
Malmo, R. B., Shagass, C., and Davis, J. F. (1951). “Electromyographic studies of muscular tension in psychiatric patients under stress.” J. clin. exp. Psychopath., 12, 45–66.Google ScholarPubMed
Marshall, J., and Walsh, E. G. (1956). “Physiological tremor.” J. Neurol. Neurosurg. Psychiat., 19, 33–35.CrossRefGoogle ScholarPubMed
Redfearn, J. W. T. (1957). “Normal and neurotic tremors.” J. Neurol. Neurosurg. Psychiat., 20, 302–313.CrossRefGoogle Scholar
Sutton, G. G. (1956). “A preliminary note on the relationship between total error in maintaining a fixed force and the magnitude of the force.” Statistical Advisory Unit Report, 4/58. pp. 25–27. Ministry of Aviation Library, London.Google Scholar
Sutton, G. G., and Sykes, K. (1956). “The reduction of hand tremor by removal of visual stimulus.” Statistical Advisory Unit Report 4/58. pp. 28–36. Ministry of Aviation Library, London.Google Scholar
Van Buskirk, C., and Fink, R. A. (1962). “Physiologic tremor—an experimental study.” Neurology (Minneap.), 12, 361–370.CrossRefGoogle ScholarPubMed
Wachs, H. (1964). “Studies of physiologic tremor in the dog.” Neurology (Minneap.), 14, 50–61.CrossRefGoogle ScholarPubMed
Young, I. C. (1933). “A study of tremor in normal subjects.” J. exptl. Psychol., 16, 644–656.CrossRefGoogle Scholar
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