Assessment of the effects of different noise levels on mental performance of individual doing mathematical calculation
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2014, Vol 8, Issue 7
Abstract
Noise is one of the most important adverse working conditions that experience in most workplaces. Effect of noise on job performance is a controversial topic among researchers. Noise is an environmental stressor, caused inaccuracy in brain activity, lack of coordination in intellectual task, enhancing in mental disorders and influence on efficiency. The sounds were required to be prepared and approved. The numbers of cases involving male students were determined. A checklist was used for entrance into the study. The study was performed using standard methods to control and limit confounding factors. The subjects were exposed to three sound level of 35 dB (sound-based), 75 and 85 dB. Simultaneously, samples were doing the mathematical calculations. Results showed that there was a significant correlation between different levels of noise and increased reaction time, depth of both middle and deep mental process (reduction of computational efficiency and precision). There is no significant relationship between different levels of noise and mental processes at shallow level. With rising the noise levels, reaction time increased and precision and efficiency calculations reduced.
Authors and Affiliations
Parvin Nasiri| Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Mohammadreza Monazzam| Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Farough Mohammadian *| Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, email: F.Mohammadian1986@gmail.com, Seyed Abolfazl Zakerian| Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Kamal Azam| Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
Keywords
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