Pertovaara A, Reinikainen K, Hari R
Brain Res. 1984 Jul 30;307(1-2):341-3. doi: 10.1016/0006-8993(84)90490-6.
Brief infrared laser pulses were applied to 3 different skin areas in man. Reaction times indicated that A delta-fibers were activated in the dorsal and volar skin of the finger whereas only C-fibers were activated in the hairy skin of the forearm. The qualitative sensations were in line with this interpretation. We conclude that the activation of unmyelinated or myelinated afferent fiber populations with brief laser pulses varies with skin type.
向人体的3个不同皮肤区域施加了短暂的红外激光脉冲。反应时间表明，Aδ纤维在手指背侧和掌侧皮肤中被激活，而在前臂的多毛皮肤中只有C纤维被激活。定性感觉与这一解释一致。我们得出结论，用短暂的激光脉冲激活无髓鞘或有髓鞘传入纤维群体的情况因皮肤类型而异。
