Research Methods for Understanding Aircraft Noise Annoyances and Sleep Disturbance (2014) / Chapter Skim
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Pages 42-45
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From page 42... ...
PHASE II – AIRCRAFT SLEEP DISTURBANCE STUDY PLANS 14 Sleep Disturbance Literature Review 14.1 Background The principal aim of the literature review was to critically review the scientific literature concerned with the effect of aircraft noise on sleep while additionally explaining sleep assessment concepts for the nonspecialist. Particular attention was given to the strengths and weaknesses of the literature with identification of gaps in the present state of knowledge.
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From page 43... ...
In addition to investigating additional evoked arousals due to noise, the assessment of the degree of sleep disturbance involves noting: sleep onset delay, increased awakenings, decreased slow wave sleep13, REM sleep, and early awakenings. Polysomnography is very sensitive, extremely well standardized and the dominant method in modern sleep research particularly for identifying arousals which seem to be essential for the detrimental effects of sleep fragmentation on daytime functioning.
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From page 44... ...
There have been many noise-response curves developed which indicate a threshold of significant disturbance where the response moves above background levels of internally generated arousals. The field studies, similar to laboratory studies, indicated a direct causal relationship between noise level and the degree of sleep disturbance.
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From page 45... ...
The cumulative noise energy exposure (e.g. Lnight or Ln)
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