The noise, the annoying and unwanted sound, affects human behavior. Stress, reduced performance in an activity, reduced school performance, fatigue, headaches, sleep problems are symptoms associated with exposure to noise for a long time.

The noise also influences social behavior, making communication more difficult, reducing altruism and increasing the tendency for aggression.

Research shows that unpredictable and prolonged noise experienced by a person as a threat is a stressor. By stimulating the sympathetic nervous system, stress increases heart rate, blood pressure and respiratory rate, while decreasing sexual mood.

At the same time, more cortisol and other hormones are secreted by the adrenals, increasing blood glucose and speeding up metabolism. The potential increase in gastric juice may increase the risk of ulcers.

The noise has a negative impact on the completion of spiritual work. It reduces the performance of complex tasks that require self-focus, alertness, focus, simultaneous perception of many and different information and memorization.

Children living in areas of excessive noise, according to surveys, show poor school performance. They have increased blood pressure and stress-related hormone levels, perform less well in mathematics, have difficulty reading and are more easily resolved problem solving and completing a task compared to children living in other areas without noise.

The noise also affects altruistic behavior. On the one hand, the feeling of discomfort, subjective discomfort, irritability and negative mood, on the other hand, distracting attention from the noise reduces the willingness to offer help to the fellow.

Noise is also indirectly linked to aggressive behavior. Without causing aggression on its own, it enhances the manifestation of aggressive behavior caused by other factors.


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