[Fluorescence anisotropy and myelin structure. IV. An analysis of the effect of temperature changes on the membrane structure].

The temperature dependence of birefringence and fluorescent polarization of stained nerve fibers has been studied. Theoretical aspects of the determination of the orientation of chromophores from polarized emission experiments are aslo considered. The experiments with changing temperature permits a conclusion that the organization of polar groups of the membrane becomes random with the decline of temperature from 20 degrees to 0 degree C, while the order of organization of hydrophobic groups increases.