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Psychosomatic Medicine 31:437-440 (1969)
© 1969 American Psychosomatic Society

An Apparatus for the Measurement of a Neonate's General Activity

ADAM P. MATHENY JR. PHD1 and KENNETH HULL MS2

1 Johns Hopkins Medical School, Department of Pediatrics, Baltimore, Md.; Department of Pediatrics, University of Louisville School of Medicine, Louisville, Kentucky
2 Johns Hopkins Medical School, Department of Pediatrics, Baltimore, Md.; School of Medicine, University of Maryland, Baltimore, Md.

A simple, inexpensive device for sensing a neonate's gross activity is described. Ordinary VU meters, inserted in a foam rubber crib mattress, transduce neonatal movement to an output voltage capable of being recorded. No external power source is needed. Ratings of visually observed movement were correlated with ratings of recorded signals obtained from 4 neonates. A correlation coefficient of +.77 was found between these ratings. The use of this device suffers little from the problems of (1) balancing a stabilimeter platform, and (2) dampening oscillations after movement.

Submitted on January 6, 1969
Revised on April 2, 1969






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Copyright © 1969 by the American Psychosomatic Society