- reduces the intellectual concentration
- decreased accuracy and efficiency of movements
- distraction
- increased energy expenditure required to make a physical effort
- difficulty in perceiving the verbal information (orders, demands)
- voice and cerebral overload

State University of New York at Buffalo

non-traumatic noise are considered 'safe'. But constant exposure to individual could cause diverse harms. This harm takes in form of physiological level and at behavioral level. Which leads to release of stress hormone and cortisol

Effects of non-traumatic noise 

There negative link between noise annoyance and poor mental health including depression, generalized anxiety disorder, and general mental health, based on a small number of studies. More evidence is needed to confirm these findings.

Noise annoyance and mental health

- Cardio-vascular changes:  increased heart rate which causes vasoconstriction, blood pressure increase
- Digestive disorders
- Hormonal changes
- Respiratory changes
- Effects on vision
- Sleep disturbances
- Effects on thermoregulation
- Effects on the immune system

Physical impact of stress caused by non-traumatic noise 

Effects of non-traumatic noise on ability of work

- aggressiveness and changes in behavior
- drop in intellectual performance, memory and in learning capacity
- anxiety, stress, emotional instability, increased use of psychotropic drugs and sleeping pills. 

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