Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 40: 990-998, 1976;
8750-7587/76 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Stiles, R. N.
Right arrow Articles by Pozos, R. S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Stiles, R. N.
Right arrow Articles by Pozos, R. S.

Journal of Applied Physiology, Vol 40, Issue 6 990-998, Copyright © 1976 by American Physiological Society

ARTICLES

A mechanical-reflex oscillator hypothesis for parkinsonian hand tremor

R. N. Stiles and R. S. Pozos

Spectral analysis was performed on postural hand tremor records obtained from 22 parkinsonian subjects. Of these 22 subjects, 18 had postural hand tremor that occurred primarily at a single frequency during any one 16-s period. In general, this tremor occurred at different steady-state frequencies (each calculated over 16 s) between about 4 Hz and 8-9 Hz. This frequency decreased approximately 1 Hz for each 10-fold increase in displacement amplitude (root-mean-square, rms, amplitude determined at 16 cm from the wrist), decreasing from 8-9 Hz at about 30 mum to 3.75-4.0 Hz at about 30,000 mum. The major finding was that the frequency of parkinsonian hand tremor was nearly the same as that for hand tremor from normal subjects when these frequenceis were compared at similar rms displacement levels. This comparison, plus a comparison between other aspects of these two kinds of tremor, indicate that the mechanism for parkinsonian hand tremor is similar to that for large-displacement (greater than 100 mum) hand tremor of normal subjects, i.e., a mechanical-reflex oscillator mechanism.


This article has been cited by other articles:


Home page
 J. Neurophysiol.Home page
M. M. Sturman, D. E. Vaillancourt, and D. M. Corcos
Effects of Aging on the Regularity of Physiological Tremor
J Neurophysiol, June 1, 2005; 93(6): 3064 - 3074.
[Abstract] [Full Text] [PDF]

Home page
 BrainHome page
M. M. Sturman, D. E. Vaillancourt, L. V. Metman, R. A. E. Bakay, and D. M. Corcos
Effects of subthalamic nucleus stimulation and medication on resting and postural tremor in Parkinson's disease
Brain, September 1, 2004; 127(9): 2131 - 2143.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurol. Neurosurg. PsychiatryHome page
J Raethjen, M R Lemke, M Lindemann, R Wenzelburger, P Krack, and G Deuschl
Amitriptyline enhances the central component of physiological tremor
J. Neurol. Neurosurg. Psychiatry, January 1, 2001; 70(1): 78 - 82.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online