A Study of Power Spectra Analysis of Normal Finger Tremors

Measurements of ``normal,'' neuromuscular finger tremor acceleration in healthy adults were made and then analyzed by power spectra and correlation techniques. These techniques from random-signal analysis offer objective methods by which tremors may be described and compared quantitatively. Measurements of this type may provide useful information in evaluating surgical and medical treatments of Parkinson's disease; furthermore, if relations between tremor phenomena and certain physiological and pathological states are established, these techniques will have diagnostic value. Some interesting and useful results evolved from this study; the power density spectra, autocorrelograms, and cumulative power spectra of the tremor measurements are presented and discussed.

[1]  M. Clare,et al.  Patterns of tremor in normal and pathological conditions. , 1948, Journal of applied physiology.

[2]  A. Eshner.  A GRAPHIC STUDY OF TREMOR , 1897, The Journal of experimental medicine.

[3]  W. W. Tuttle,et al.  Influence of Exercises, Emotional Stress, and Age on Static Neuromuscular Tremor Magnitude , 1954 .

[4]  J W REDFEARN.  FREQUENCY ANALYSIS OF PHYSIOLOGICAL AND NEUROTIC TREMORS , 1957, Journal of neurology, neurosurgery, and psychiatry.

[5]  H. Wachs.  Studies of physiologic tremor in the dog , 1964, Neurology.

[6]  Stanford Goldman,et al.  Information theory , 1953 .

[7]  D. Webster,et al.  Dynamic measurement of rigidity, strength, and tremor in Parkinson patients before and after destruction of mesial globus pallidus , 1960, Neurology.

[8]  J. Graham.  STATIC TREMOR IN ANXIETY STATES , 1945, Journal of neurology, neurosurgery, and psychiatry.

[9]  J. Brumlik,et al.  On the nature of normal tremor , 1962, Neurology.

[10]  B. Burns,et al.  A preliminary report on the measurement of Parkinson's disease , 1960, Neurology.

[11]  B. Boshes,et al.  Tremor studies in normals and in Parkinsonism. , 1961, Archives of neurology.

[12]  C. van Buskirk,et al.  Physiologic tremor , 1962, Neurology.

[13]  R N Wolfenden,et al.  A Note on the Rhythm and Character of Certain Tremors , 1888, British medical journal.

[14]  R. N. Stiles,et al.  POWER SPECTRAL ANALYSIS OF FINGER ACCELERATION TREMOR. , 1964, Journal of applied physiology.

[15]  W. W. Tuttle,et al.  Effect of exercises of graded intensity on neuromuscular tremor as measured by a strain gauge technique. , 1951, Journal of applied physiology.

[16]  J. Redfearn,et al.  An analysis of the frequencies of finger tremor in healthy subjects , 1956, The Journal of physiology.

[17]  J. Marshall.  OBSERVATIONS ON ESSENTIAL TREMOR , 1962, Journal of neurology, neurosurgery, and psychiatry.

[18]  W. Friedlander.  Characteristics of Postural Tremor in Normal and in Various Abnormal States , 1956, Neurology.

[19]  Gwilym M. Jenkins,et al.  General Considerations in the Analysis of Spectra , 1961 .