The noise, whether from a machine, cars or a neighbor with a bad musical taste, certainly has already caused damage to your health. But that are not just hearing damage. They go far beyond the eardrum and can unbalance a person emotionally.
According to director and professor of physiology at Seton Hill University, United States, Mark A. W. Andrews, background or low volume sounds, whether at home, at work or at school, interrupt people’s concentration. So far no news. But, according to the US National Institute of Occupational Health and Safety, ambient sound also affects health by increasing stress levels and aggravating related conditions, such as high blood pressure, coronary heart disease, peptic ulcers and migraines.
The continued exposure to noise, according to the Institute, does not get people used to it, but it worsens the effects.
As Andrews shows, several studies indicate that stress from white noise, that is, a standard random sound signal, can induce the release of cortisol. It is a hormone that helps to restore homeostasis, that is, the balance of the body’s conditions, after a bad experience. It turns out that excess cortisol impairs the function of the prefrontal cortex, an emotional learning center of the brain, which helps to regulate “executive” functions: planning, reasoning and controlling impulses.
Andrews says there is recent evidence that the prefrontal cortex also stores short-term memories. Changes in that region, therefore, can obstruct a person’s ability to think clearly and retain information. Although this is not definitive, says the professor, there is also research that suggests that stress caused by noise can decrease the amount of dopamine in the prefrontal cortex. As a result, there may be memory loss, learning difficulties and a decrease in important brain functions.
Warrior of silence In my search for people who think like me when it comes to respect for the quietness of others, I ended up meeting Graziela Menezes Alves, editor of a blog that essentially repudiates and combats the exacerbated noise of automotive sound and noise without limit in popular celebrations. The blog content is a real cry for help from the authorities and the community. Graziela, who studies for public contests, finds herself in constant struggle against a noisy neighborhood and evokes all kinds of information or legal support that helps in her battle: “People in general see me as reactionary or simply boring, not everyone world has this point of view in relation to my despair in the face of noise pollution, it is normal for people to make jokes and think that I am exaggerating ”, she told me by email. “I get highly stressed, the pressure goes up, the heart speeds up, I’ve had a stomach ache and an earache too,” she told me.