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- W2086369409 abstract "The spectral component analysis of heart rate variability, based on the IPFM model, was applied in order to assess the physiological effect of environmental lighting. There appear to be two prominent components in the power spectrum of the heart rate variability. One is the blood pressure vasomotor component which reflects the activities of both the sympathetic and parasympathetic nervous systems. The other is the respiratory component which reflects the activity of the parasympathetic nervous system. Therefore these two components can be the indices of the physiological load. The experiment was carried out under five illuminance levels of 180, 320, 560, 1,000 and 1,800 lx, using fluorescent lamps with color temperatures 2,800 and 5,000 K as the light sources. The results suggested that the physiological load was minimal in the illuminance range 500∼600 lx in both 2,800 and 5,000 K, and increased with increasing or decreasing illuminance from this range. It was obvious that the physiological load was influenced by the psychological effect of lighting. The most desirable illuminance range was 500∼600 lx, where the physiological load was minimal, in 2,800 K. But in 5,000 K a higher level of illuminance scored maximum desirability, than the level corresponding to minimum physiological load. An illuminance range 500∼1,000 lx was acceptable in 5,000 K.." @default.
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- W2086369409 date "2001-01-01" @default.
- W2086369409 modified "2023-10-04" @default.
- W2086369409 title "Assessment of Physiological Effect of Lighting by Spectral Analysis of Heart Rate Variability." @default.
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- W2086369409 doi "https://doi.org/10.2150/jlve.25.1_28" @default.
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