title: [Statistical and frequency-amplitude characteristics of ultra weak emissions of the loach eggs and embryos under the normal conditions and during their optic interactions. I. Characteristics of ultra weak emission in normal development and the optic role of egg envelope].
abstract: Ultraweak emissions of groups comprising several dozens of unfertilized and fertilized loach eggs, embryos, larvae, and their egg envelopes were measured on a photomultiplier tube. The envelopes absorbed the light from external sources but readily gave it back in the absence of embryos. We carried out statistical and frequency-amplitude analyses of ultraweak emissions and studied the autocorrelation structure of their frequency spectra. The frequencies of signals with different intensity underwent regular changes during development. Cascades of short-term (< or = 1 ms) flashes timed (during cleavage) to furrowing were a characteristic element of ultraweak emission. The Fourier spectra of developing embryos had pronounced frequency-amplitude peaks and higher, than in unfertilized eggs and inanimate samples, mutual correlation during successive time intervals. Stage-specific translational symmetry of the frequency spectra of ultraweak emissions was demonstrated, which suggests the presence in groups of embryos of a coordinated system of harmonic oscillators. The latter underwent regular changes during development. The measurement of ultraweak emissions represents a unique non-invasive method of analysis of these oscillators.
authors.affiliation: Biological Faculty, Moscow State University, Vorob'evy gory, Moscow, 119899 Russia.
authors.forename: L V
authors.initials: LV
authors.lastname: Belousov
authors.forename: A B
authors.initials: AB
authors.lastname: Burlakov
authors.forename: N N
authors.initials: NN
authors.lastname: Luchinskaia
mesh_terms: D000818:Animals; D055592:Biophysical Phenomena; D001703:Biophysics; D003531:Cypriniformes / Q000196:embryology* / Q000502:physiology; D003627:Data Interpretation, Statistical; D004625:Embryo, Nonmammalian / Q000502:physiology*; D005314:Embryonic and Fetal Development; D005260:Female; D008027:Light; D055095:Optics and Photonics; D010063:Ovum / Q000502:physiology
vernacular_title: Statisticheskie i chastotno-amplitudnye kharakteristiki sverkhslabykh izlucheniĭ iaĭtsekletok i zarodysheĭ v'iuna v norme i pri ikh opticheskikh vzaimodeĭstviiakh. I. Kharakteristiki sverkhslabykh izlucheniĭ v normal'nom razvitii i opticheskaia rol' iaĭtsevykh obolochek.