The study examined the changes in intraperitoneal body temperature of laboratory mice, Jungar hamsters, European greenfinch Chloris chloris, and starlings. In a few minutes range, these changes significantly correlated not only between the animals of the same species, but also between the different classes such as birds and mammals, which were isolated from each other and maintained under different illumination regimen. This phenomenon indicates some external influence(s) on the central mechanisms of the thermal control system not related to illumination regiment. In 80% cases, the phases of most pronounced rhythms of body temperature oscillating with the periods of 8-9 and 12-13 min coincided with those of geomagnetic field within the accuracy of ±1 min. However, the amplitude of body temperature oscillations did not depend on the amplitude of geomagnetic field (GMF) oscillations. Synchronicity of the changes in body temperature and GMF was observed at the amplitude of GMF oscillation of 0.4 nT, which is extremely low value. In contrast, there was no reaction of body temperature to greater (6-10 nT) but irregular and abrupt perturbations of GMF.

该研究检查了实验室小鼠、Jungar 仓鼠、欧洲绿翅雀Chloris chloris 的腹膜内体温变化，和八哥。在几分钟的范围内，这些变化不仅在同一物种的动物之间存在显着相关性，而且在鸟类和哺乳动物等不同类别之间也存在显着相关性，它们彼此隔离并在不同的光照方案下保持。这种现象表明对热控制系统的中央机制有一些外部影响，与照明团无关。在 80% 的情况下，以 8-9 和 12-13 分钟为周期振荡的最明显体温节律的相位与地磁场的相位一致，精度在 ±1 分钟内。然而，体温振荡的幅度不依赖于地磁场（GMF）振荡的幅度。在0.4 nT的GMF振荡幅度下观察到体温和GMF变化的同步性，这是极低的值。相比之下，体温对更大（6-10 nT）但不规则和突然的 GMF 扰动没有反应。