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In The News... "Noise, stress and annoyance"
Read the entire
article
This article reviews the effects of sound on man with
emphasis on the physiological reaction mechanisms and the ultimate stress
reaction. It is shown that energy related noise levels are poor predictors for
the reactions in man as noise is always interpreted in the central nervous
system, generating secondary and tertiary reactions that are not controlled by
the brain cortex. The stimulation of these reaction pathways in acute situations
lead to involuntary reflexes and feelings of fright and despair. In chronic
exposure situations a give-up stage may develop with reduced corporal and mental
functions. In the acoustical panorama peak level noises usually cause the most
pronounced effects as they stimulate reactions of fear and flight. The
dose-response for noise is a typical hormesis relationship – low levels of sound
are necessary for a good environment and high doses cause health effects and
other negative reactions. The practical consequences in terms of prevention are
discussed.
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