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目的 了解颜色刺激正常人和色觉异常者不同记录部位的VEP表现 ,作临床功能判断和色觉机制分析的参考。方法 通过实验用计算机软件控制亮度和颜色因素 ,用黑 白棋盘格和等亮度的红 白、绿 白及红 绿颜色棋盘格作为刺激模式 ,记录一组正常人及色觉异常者的瞬态诱发电位。结果 ( 1 )正常人在红 白、绿 白及红 绿刺激下 ,1 0导联P1波振幅低 ,在红 白、绿 白刺激下 ,1 5导联P1波潜伏期长 ,结果比较具有统计学意义。 ( 2 )正常人在上述四种刺激条件下P1波潜伏期按时间长短顺序 ,红 白 <黑 白 <红 绿 <绿 白 ,潜伏期之间的比较具高度显著性 ;P1波振幅的高低是黑 白 >红 白、红 绿、绿 白 ,差异有显著性 ,但颜色刺激之间振幅的比较无差异。 ( 3)色觉异常组在四种刺激每件下P1波潜伏期长短及振幅的高低之间无差异 ,但黑 白刺激潜伏期最短。红绿色盲及绿色盲 ,对绿 白刺激无反应 ,对红 白及红 绿有反应 ,但振幅较正常人显著降低。 ( 4)正常组与色觉异常组P1波的比较 ,潜伏期无差异 ,振幅在黑 白刺激下无差异 ,在颜色刺激下 ,差异有显著性。结论 ( 1 )颜色视觉诱发电位客观地检查先天性色觉异常是可行的 ,对红绿色盲和绿色盲尤为敏感。 ( 2 )在视中枢内可能有一个相对主要的颜色区域。 ( 3)颜色和亮
Objective To understand the VEP performance of different recording sites stimulated by color to stimulate normal people and abnormal color vision, and to make reference for clinical function judgment and color vision mechanism analysis. Methods The brightness and color factors were controlled by computer software. The black and white chessboard, the red, white, green and white and red and green checkerboards were used as the stimulation mode to record the transient evoked potentials of a group of normal people and abnormal color vision. Results (1) Under the stimulation of red, white, green and white and red and green, the amplitudes of P1 waves in 10 lead were low, and the latency of P1 wave in 15 leads was longer under the stimulation of red, white and green, the results were statistically significant significance. (2) The latency of P1 wave in normal subjects under the above four stimulation conditions was in the order of time, red and white red White, red and green, green and white, the difference was significant, but there was no difference in amplitude between color stimuli. (3) There was no difference between the sensory abnormality group and the amplitude of P1 wave in each of the four stimuli, but the shortest duration of black and white stimulation. Red-green blindness and green blindness, no reaction to green-white stimulation, red and white and red and green reaction, but the amplitude was significantly lower than normal. (4) Compared with P1 wave in normal group and abnormal color vision group, there was no difference in incubation period. There was no difference in amplitude between black and white stimulation. Under color stimulation, the difference was significant. Conclusions (1) The color visual evoked potentials are feasible to objectively examine congenital color vision abnormalities, and are especially sensitive to red-green color blindness and green color blindness. (2) There may be a relatively major color area within the visual center. (3) color and light