Аннотация:Dynamical spectroscopy of intensity fl uctuations allows measurements
of the dynamic scattering of light and motility detection of biomicroparticles in
suspensions and tissues. Spectroscopy of intensity fl uctuations allows the detection
of complex rhythms of the rat heart in vitro. The optical portable spectrometer used
detected Fourier spectra and real-time rhythms in rat cardiomyocytes, the beating in
the infarct model of the rat heart. The fi ndings indicated that single cardiomyocyte
beating was superimposed on the autowave heart tissue rhythm and associated with
the apoptotic process. A dependence was observed of the superposition of individual
cardiomyocyte beatings at 8–22 Hz on their metabolic state and autooscillations
of isolated rat heart tissue at 1–2 Hz.