Walker J B, Akhanjee L K
Brain Res. 1985 Oct 7;344(2):281-5. doi: 10.1016/0006-8993(85)90805-4.
Irradiation of the skin overlying the median nerve at the wrist in humans with a low power (1 mW; 632.5 nm) helium-neon laser produced a somatosensory evoked potential obtained at Erb's point. This evoked potential had a latency equal to that observed after electrical stimulation of the same nerve. Prolonged exposure to laser (20 min, 3.1 Hz) resulted in a large (10-90%) decrease in the amplitude of the electrical evoked potential. Since this laser produces no detectable thermal change, the results imply that photochemical reactions alter neuronal activity.
用低功率（1毫瓦；632.5纳米）氦氖激光照射人类手腕部正中神经上方的皮肤，在Erb点记录到体感诱发电位。该诱发电位的潜伏期与对同一神经进行电刺激后观察到的潜伏期相同。长时间激光照射（20分钟，3.1赫兹）导致电诱发反应的幅度大幅下降（10 - 90%）。由于这种激光不会产生可检测到的热变化，结果表明光化学反应改变了神经元的活动。
