On the Relationship of Changes in the Ultradian Rhythms of the Body Temperature of Two Mice Groups Isolated From Each Other (original in Russian)

" We studied the dynamics of changes in the degree of synchronization of body temperature rhythms in the 6–20 and 100–260 minute range of periods between two groups of mice isolated from each other and under constant illumination, and to assess the effect of periods of disturbed geomagnetic conditions on this indicator. Groups of mice were kept under constant illumination, which avoids synchronization of the activity rhythms by the light factor – changing the light/dark cycle. Body temperature measurements were performed in 1 minute increments. The distance between the sites of these two groups of mice was 2 km." {Credits 1}

" It can be assumed that synchronous changes in the prevailing periods in the dynamics of body temperature in two groups of mice isolated from each other cause an external quasirhythmic environmental factor, which either directly determines these rhythms of activity in mice, or synchronizes their endogenous rhythms. The fact of the phase coincidence of activity rhythms between the two studied groups of mice, which we established, additionally testifies in favor of the hypothesis of the existence of an external synchronizing ultradian rhythms in rodents of an environmental factor different from the light / dark regime." {Credits 1}

" We have shown that an increase in the disturbance of the geomagnetic field leads to a decrease in the degree of synchronization of body temperature rhythms between two groups of mice isolated from each other. At negative values of the vertical component of the interplanetary magnetic field, which contribute to the disturbance of quasi-rhythmic oscillations of the geomagnetic field, a decrease in the values of the correlation coefficient of the power spectra of body temperature between the two studied groups of mice is also observed. Similar data on the desynchronizing effect of geomagnetic disturbances and storms were obtained by Gurfinkel while observing the rhythmic changes in the parameters of the cardiovascular system." {Credits 1}

{Credits 1} 🎪 Диатроптов М. Е., Арсеньев Г. Н., Шатеева В. С., Лигун Н. В., Дорохов В. Б. О ВЗАИМОСВЯЗАННОСТИ ИЗМЕНЕНИЙ УЛЬТРАДИАННЫХ РИТМОВ ТЕМПЕРАТУРЫ ТЕЛА ДВУХ ИЗОЛИРОВАННЫХ ДРУГ ОТ ДРУГА ГРУПП МЫШЕЙ // Ученые записки Крымского федерального университета имени В. И. Вернадского. Биология. Химия. 2022. №1. © 2022 The Author(s). This is an open access article distributed under the Creative Commons Attribution License.