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FREQUENCY RESPONSE IN TERMS OF MUSCULAR ACTIVITY IN CEREBRAL PALSIED CHILDREN Takuo TAMAKI 1 , Chikami MORISADA 1 1Dept. of Orthopedic Surgery, Nagasaki Univ. School of Med. pp.479-484
Published Date 1965/5/1
DOI https://doi.org/10.11477/mf.1406201844

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  • Abstract
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Cerebral palsied children were instructed to control the pointer so as to follow up the pendulous target in various frequencies, and subjected to the frequency response sest.

Cathode oscillograph made synchronously possible both recordings of movements of target and pointer as well as global trace derived from the biceps and triceps muscle.

With the logarithmic values of frequencies on abs-cissae, averaged amplitude of global electromyogram was plotted in ordinate. Pattern of reciprocal inner-vation between the antagonistic muscles was also examined with special reference to its transformation following the application of various frequencies.

Normal subjects showed the steady frequency response in terms of amplitude of global electrom-yogram and pattern of reciprocal innervation with systematic alteration in harmony with the various frequencies. In striking contrast with normal children most of cerebral palsied children revealed failure or lack or instability of frequency response in terms of muscular activity and deviation in pattern of recip-rocal innervation. Cerebral palsied children were found to have peculiarly their own servomechanism.


Copyright © 1965, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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