本文记录了144例正常成人的上肢体感诱发电位,其中50岁以上年龄组100例(男性80例,女性20例),50岁以下年龄组44例(男性22例,女性22例)。刺激正中神经,从刺激同侧记录锁骨上电位,从刺激对侧的头皮上记录分析半球50ms以内的成份。结果,半球各波愈向后变异愈大;波的峰潜时男性50岁以上者较50岁以下者延长,男性较女性为长,女性各年龄组之间各波的峰潜时差异无显著性。作者认为在检测神经系统疾病患者的体感诱发电位时应注意年龄和性别上的差异性。 This paper records the somatosensory evoked potential of the upper extremities in 144 normal adults, 100 of whom are in the age group of over 50 years old (80 males and 20 females) and 44 under the age of 50 (22 males and 22 females). The median nerve is stimulated and the supraclavicular potential is recorded from the stimulus side and the contents within 50 ms of the hemisphere are recorded and analyzed from the contralateral scalp. As a result, the greater the variation of each wave in the hemisphere, the greater the wave peak latent latency of men aged over 50 was longer than those under 50 years of age, and men were longer than those of women. There was no significant difference in peak latency of wave among women of all age groups Sex. The authors consider that age and gender differences should be noted when testing somatosensory evoked potentials in patients with neurological disorders.