Influence of slope of rise and event order of aircraft noise events on high resolution actimetry parameters
Somnologie - 2008
Tóm tắt
Takeoffs and landings
during the night are restricted in
some form at most airports. Therefore,
commonly, evenings and
mornings are especially prone for
sleep disturbances through aircraft
noise. We conducted an experimental
field study at residents' homes
in the vicinity of Zurich Airport
that aimed at quantifying the effects
of aircraft noise events on
bodily reactions before wakeup in
the morning. Aircraft noise was administered
using pre-recorded
noise events and played back in the
subjects' bedrooms. A non-intrusive
and event-related recording
system for sleep physiology parameters
(high resolution actimetry,
cardiac and respiratory parameters)
was developed and used to
measure bodily reactions to noise
events. Results show that motility
reactions to the first aircraft noise
events in the morning were stronger
than to subsequent ones, suggesting
that the number of previously
experienced overflights has a
systematic effect, especially if the
events occur in short intervals. Motility
reactions have also been
found to be dependent on the slope
of rise of events, with steeper rises
– as they are typical for close flyovers
from landing aircraft – evoking
stronger reactions. These findings
are in accordance with recent
laboratory investigations of aircraft
and railway noise impact on awakening
probability.
Từ khóa
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