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Japanese

Studies on the Cutaneous Reflexes.:On the Afferent Impulses caused by the Cutaneous Touch and Pressurestimulations. Keiichi MIMURA 1 1The 2nd Department of Physiology, Nagasaki University School of Medicine pp.197-199
Published Date 1955/7/20
DOI https://doi.org/10.11477/mf.1406200451
  • Abstract
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It has been comfirmed by Sato and Yamamoto that the cutaneous touch and pressure cause the augmentation and inhibition of the res-piratory and cardiac movement. So the afferent impulses elicited by the cutaneous touch and pressure was observed, in order to know whe-ther the above difference occurs or not on the peripheral activity. The skin-nerve pre-paration severed from frog (Rana nigromacu-lata) were used.

1) The impulses elicited by the cutaneous touch and pressre show the different height, i.e. the former shows 1.5-2 times higher than the latter.

2) The former shows longer duration and occurs temporally (phasic fibre). The latter shows shorter duration and occurs continuously (tonic fibre).

3) From these results it is recognizable that the impulses caused by the cutaneous touch-stimulation are different from those by the pressure-stimulation. It assumes that by the cutaneous touch and pressure stimulation the different receptors following different afferent signals are transmitted into the central nervous system. Thus the one of the reason for the above two effects comfirmed by Sato and Yamamoto is obtained.


Copyright © 1955, 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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