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Causal relationships have been discovered between noise and psychological effects such as annoyance, psychiatric disorders, and effects on psychosocial well-being. [5] Exposure to intense levels of noise can cause personality changes and violent reactions. [33] Noise has also been shown to be a factor attributed to violent reactions. [34]
These factors may diminish well-being of people that suffer from sound annoyance. Other factors that correlate with sound annoyance are increased absence form work, [3] sleep disturbance, [3] and interference with performing cognitive tasks like paying attention at school. [3] For a more detailed article about health effects: health effects ...
HAE studies the (presumably ancestral) monitoring functions of the human auditory system. These monitory auditory functions are used by human auditory system to build a perceptual representation of the close environment, orient and navigate, assess resources (food, water, shelter) and danger (e.g., flooding, predators), opportunities for action, and the general health of the environment.
Developmental noise may help individuals gain the ability to adapt to the environment. Biological systems display both variation and robustness. [6] Natural variation within a population is in large part genetically determined, but variation due to noise may contribute to a rapid response by an individual to changes in the environment.
Psychoacoustics is the branch of psychophysics involving the scientific study of the perception of sound by the human auditory system.It is the branch of science studying the psychological responses associated with sound including noise, speech, and music.
The risk of negative health effects from sound exposures (be it noise or music) is primarily determined by the intensity of the sound , duration of the event, and frequency of that exposure. [9] These three factors characterize the overall sound energy level that reaches a person's ears and can be used to calculate a noise dose.
When sensorineural hearing loss (damage to the cochlea or in the brain) is present, the perception of loudness is altered. Sounds at low levels (often perceived by those without hearing loss as relatively quiet) are no longer audible to the hearing impaired, but sounds at high levels often are perceived as having the same loudness as they would for an unimpaired listener.
Environmental noise is an accumulation of noise pollution that occurs outside. This noise can be caused by transport, industrial, and recreational activities. [1] Noise is frequently described as 'unwanted sound'. Within this context, environmental noise is generally present in some form in all areas of human, animal, or environmental activity.