Ossenkopp K P, Kavaliers M, Hirst M
Neurosci Lett. 1983 Oct 10;40(3):321-5. doi: 10.1016/0304-3940(83)90059-9.
Latency to respond to an aversive thermal stimulus and the degree of analgesia induced by morphine were examined in mice injected with either isotonic saline or morphine sulfate (10 mg/kg) during midscotophase of a 12:12 h LD cycle. When mean response latencies were compared to the degree of geomagnetic disturbance (Ap index) present on test days, it was found that during the geomagnetic storm on December 17th, 1982, a significant reduction (P less than 0.01) in response latency was evident in both saline- and morphine-treated mice. The reduction in response latencies was greater, and lasted longer in the morphine-treated animals. It is suggested that the pineal gland may mediate this biomagnetic effect.
在12:12小时光照/黑暗周期的暗期中期，给注射了等渗盐水或硫酸吗啡（10毫克/千克）的小鼠检测对厌恶性热刺激的反应潜伏期以及吗啡诱导的镇痛程度。当将平均反应潜伏期与测试日存在的地磁干扰程度（Ap指数）进行比较时，发现1982年12月17日地磁风暴期间，盐水处理组和吗啡处理组小鼠的反应潜伏期均显著缩短（P小于0.01）。吗啡处理组动物的反应潜伏期缩短幅度更大，且持续时间更长。提示松果体可能介导了这种生物磁效应。
