Psychosomatic Medicine Faster Service from Outside North America
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by RUESCH, J.
Right arrow Articles by SCHWAB, R. S.
Right arrow Search for Related Content
PubMed
Right arrow Articles by RUESCH, J.
Right arrow Articles by SCHWAB, R. S.

Psychosomatic Medicine 2:411-437 (1940)
© 1940 American Psychosomatic Society

The Electromyogram of Handwriting

JURGEN RUESCH M.D.1, JACOB È. FINESINGER M.D.1, and ROBERT S. SCHWAB M.D.1

1 Department of Diseases of the Nervous System, Harvard Medical School, and the Psychiatric Department, Massachusetts General Hospital

Electromyographic tracings obtained during handwriting on 15 subjects are presented. A few tracings obtained during attempts at foot writing and making a fist are presented.

A method is presented for the statistical analysis of the tracings, based on the measurement of successive spikes. The individual groups are defined in terms of successive maxima and minima and indices are derived which are used for the comparison of tracings.

The index M (ratio of the sum of the maxima to the sum of the minima) gives the best characteristic of an electromyographic tracing.

The interpretation of various tracings and the influence of strength, speed and relaxation are discussed.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1940 by the American Psychosomatic Society