The Effects of Clothing Pressure on Somatosensory Evoked Potential

1.1991年的执行计划：女性受试者固定用于监测呼吸的热敏电阻，并佩戴腰带。这是在大约30毫米汞的压力下进行的。他们坐在椅子上，被要求睁开眼睛。将表面电子放置在头皮位置CZ和C4‘。在受试者呼气相或吸气相的中段对正中神经进行单次电刺激。电刺激诱发的SEP在短潜伏期和中潜伏期均有记录。平均由60-100次扫描组成，所有的数据都存储在光盘上。测量SEP各成分的峰潜伏期和波幅，并计算其平均值。受试者在腰围按压10~60毫米汞柱时，询问腰线各部位的压力感。袋子被插入腰带和皮肤之间的每一个点。结论：1.服装压力对SEP没有显著影响。1992年的实施计划：在实验方面增加了深呼吸。研究了服装压力对中、长潜伏期的影响。深呼吸时的N3P4波幅受服装压力的影响。1993年的实施计划：在手受到刺激的情况下进行主动的自愿拍击动作时，在结束灵感或体验时对正中神经进行单次电刺激。服装压力对体感诱发电位的影响在CZ比C4‘更具特异性。P_2N_3平均波幅在深呼吸、呼气相、吸气相的顺序为吸气相。讨论了服装压力与压力感的关系。由28个数据的平均值得到的回归直线用直线表示得很好，符合Weber和Fechner的低点。

1. The enforcement plan in 1991 : Female subjects fixed the thermistor for monitoring respiration and wore the waist cuff band. This was pressured at about 30mmHg. They were seated in a chair and asked to open their eyes. Surface electrondes were placed in scalp positions CZ and C4'. Single electrical stimulation to median nerve was given ato the middle of the subject's expiratory or inspiratory phase. SEP from electrical stimulation have been recorded on the short- and middle-latency. Averages were composed of 60-100 sweeps and all deta were stored on disc. Peak latencies and amplitudes of SEP components were measured and mean values for those were calculated. The subjects were questioned on the pressure sensation at each part of waist-line when the waist cuff was pressed at 10-60mmHg. The pouch was inserted between the waist cuff band and the skin at each point. There were no significant effects of clothing pressure on SEP.2. The enforcement plan in 1992 : Deep breathing was added in term of experiment. The effectts of clothing pressure on the middle- and long-latency were investigated. On the amplotude N3P4 during deep breathing, there were affected by clothing pressure.3. The enforcement plan in 1993 : When active voluntary clunching movements were carried out with the hand being stimulated, single electrical stimulation to median nerve was given at the ending inspiration or experiation. the effects of clothing pressure involved more specific change in the SEP at CZ than C4'. Mean amplitude of P2N3 were in the order inspiratory phase during deep breathing > expiratory phase > inspiratory phase. The relationship between the clothing pressure and the pressure sensation was discussed. the regression line derived from the mean of 28 data were well represented by straight and obeyed the low of Weber and Fechner.