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Night-Time Noise Index Based on the Integration of Awakening Potential

Author

Listed:
  • Junta Tagusari

    (Graduate School of Engineering, Kyoto University, Kyoto 615-8530, Japan)

  • Tomoya Takashima

    (Graduate School of Engineering, Kyoto University, Kyoto 615-8530, Japan)

  • Satoshi Furukawa

    (Graduate School of Engineering, Kyoto University, Kyoto 615-8530, Japan)

  • Toshihito Matsui

    (Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan)

Abstract

Sleep disturbance induced by night-time noise is a serious environmental problem that can cause adverse health effects, such as hypertension and ischemic heart disease. Night-time noise indices are used to facilitate the enforcement of permitted noise levels during night-time. However, existing night-time noise indices, such as sound exposure level (SEL), maximum sound level (L Amax ) and night equivalent level (L night ) are selected mainly because of practical reasons. Therefore, this study proposes a noise index based on neurophysiological determinants of the awakening process. These determinants have revealed that the potential on awakening is likely integrated into the brainstem that dominates wakefulness and sleep. From this evidence, a night-time noise index, N awake,year , was redefined based on the integration of the awakening potential unit (p unit ) estimated from the existing dose-response relationships of awakening. The newly-defined index considers the total number of awakenings and covers a wide-range and number of noise events. We also presented examples of its applicability to traffic noise. Although further studies are needed, it may reveal a reasonable dose-response relationship between sleep disturbance and adverse health effects and provide a consistent explanation for the risks of different sound sources where the characteristics of noise exposure are quite different.

Suggested Citation

  • Junta Tagusari & Tomoya Takashima & Satoshi Furukawa & Toshihito Matsui, 2016. "Night-Time Noise Index Based on the Integration of Awakening Potential," IJERPH, MDPI, vol. 13(3), pages 1-17, March.
    • Handle: RePEc:gam:jijerp:v:13:y:2016:i:3:p:272-:d:64839
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    Citations

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    Cited by:

    1. Junta Tagusari & Toshihito Matsui, 2016. "A Neurophysiological Approach for Evaluating Noise-Induced Sleep Disturbance: Calculating the Time Constant of the Dynamic Characteristics in the Brainstem," IJERPH, MDPI, vol. 13(4), pages 1-15, March.
    2. Ekici, Filiz & Orhan, Gamze & Gümüş, Öner & Bahce, Abdullah Burhan, 2022. "A policy on the externality problem and solution suggestions in air transportation: The environment and sustainability," Energy, Elsevier, vol. 258(C).

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