手掌と指先より記録した交感神経皮膚反応(SSR)の比較検討

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Recently, many hospital incorporate Sympathetic Skin Response (SSR) as one of the parameter to Autonomic Functional Test in clinical lab examination, and the actual examinations are mostly recorded by the Ag-AgCl electrode contacted to the palm (G1) and the reference electrode to the back of the hand (G2).However, due to setting the reference electrode and the recording electrode to the palm and the back of the hand respectively, minor movement of the hand introduces noise. Therefore in this study, by recording the SSR speak (p-p) voltage obtained from the palm and the fingertip simultaneously, we examine and compare difference between the SSR wave obtained by the electrode on the palm , which is the generic recording method, and the SSR wave obtained from the fingertip.Resuls had indicated that sixteen subjects out of seventeen subjects showed significant diffrences in peak voltage in the fingertip and palm. No significant SSR speak voltage differences recognized at the tip of the thumb and middle finger. By having the fingernail of the thumb as the reference, the electrical potential of the palm recorded higher when setting the back of the hand as the reference which is the positive electrical potential. No signficant diffrence were recognized between left and right hands. Comparing the noise incorporation, the fingertip showed less noise mixed than the back of the hand. From the result, we found that the inspection method of locating the recording electrode at the tip of the middle finger was more effective than the conventional palm-backhand electrical potential guide including the recording drift, SSR mechanism and against noise contamination.
2007-03-12

手掌と指先より記録した交感神経皮膚反応(SSR)の比較検討

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