title: [The information value of indices of the mathematical analysis of heart rhythm in noise exposure].
abstract: The effect of noise on the vegetative nervous system is well-studied. In a laboratory room simulating operator's box 6 subjects were exposed fourfold to white noise with intensity 95 dB/A. The indices of the cardiac rhythm were measured for 10 minutes, threefold, during all exposures, except the first. The measurements were before the beginning of the noise exposure, from the 5th to the 15th minute after starting and at the end (the exposure continues 135 min.). It was established that the effect of noise on the cardiac rhythm indices is most strongly expressed in the beginning. At the end of the exposure the traced indices show a tendency towards level off with the initial data. A conclusion is made that the nearly unknown, in our country, indices of the mathematical analysis of the cardiac rhythm possess high information concerning the noise hazard.
authors.forename: S
authors.initials: S
authors.lastname: Danev
mesh_terms: D000328:Adult; D001330:Electronic Data Processing; D006339:Heart Rate; D006801:Humans; D008433:Mathematics; D009622:Noise / Q000009:adverse effects*; D009623:Noise, Occupational / Q000009:adverse effects*; D011603:Psychophysiology; D013997:Time Factors
vernacular_title: Informativnost na pokazatelite ot matematicheskiia analiz na sŭrdechniia ritŭm pri shum.