The Effects of Clothing Pressure on Somatosensory Evoked Potential

1. 1991年的实施方案：女性受试者固定监测呼吸的热敏电阻，佩戴袖口带。压力约为30mmHg。他们坐在椅子上，要求睁开眼睛。表面电极放置于头皮位置CZ和C4'。在受试者呼气期或吸气期中间对正中神经进行单次电刺激。在短潜伏期和中潜伏期记录了电刺激产生的SEP。平均扫描60-100次，所有数据存储在磁盘上。测量SEP分量的峰值潜伏期和振幅，并计算其平均值。在10 ~ 60mmhg的压力下，询问受试者腰线各部位的压迫感。在每个点的腰袖带和皮肤之间插入小袋。服装压力对SEP.2无显著影响。1992年的实施方案：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量受服装压力的影响。1993年的实施方案：在刺激手部进行主动主动的握紧动作时，在灵感或实验结束时对正中神经进行单次电刺激。服装压力对CZ部位SEP的影响比C4部位更具体。深呼吸时P2N3的平均振幅均处于顺序吸气期>呼气期>吸气期。讨论了服装压力与压感之间的关系。由28个数据的平均值得到的回归线很好地以直线表示，服从Weber和Fechner的low。

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.