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By Joel Brumlik, MD, PhD, Chong-Bun Yap, MD. Price, $7.50. Pp 93. Charles C Thomas Publisher, 301-327 E Lawrence Ave, Springfield, Ill 62703, 1970.

Roger C. Duvoisin, MD, Reviewer

Arch Neurol. 1971;25(1):95-96.

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Dr. Brumlik presented his observations on "normal tremor" in the S. Weir Mitchell Award Essay at the annual meeting of the American Academy of Neurology in 1961. He identified as "normal" or "physiologic" tremor the ballistocardiographic oscillation he had recorded with a sensitive accelerometer from various body parts at rest and suggested that there might well be a similar cardiovascular component in other types of tremor including postural and intention tremor. In his collaboration with Dr. Yap, he now presents additional thoughts on this subject in this brief monograph. Normal tremor is defined at the outset as a tremor "seen in normal individuals and characterized by a moderately rhythmic to dysrhythmic sustained oscillation... in the frequency range 7-13 c/sec." It is not usually discernible to the naked eye. The authors recognize a "normal" postural tremor, a "normal" intentional tremor, a "normal" rest tremor, and corresponding "abnormal" tremors. They identify "normal . . . [Full Text PDF of this Article]

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