ORIGINAL ARTICLE
EFFECT OF LONG-TERM EXPOSURE TO TRAFFIC NOISE ON AUDITORY TEMPORAL RESOLUTION OF TRAFFIC POLICE: A PRELIMINARY STUDY
 
More details
Hide details
1
Department of Speech and Hearing, JSS Institute of Speech and Hearing, Mysore, India
CORRESPONDING AUTHOR
Vipin Ghosh   

Vipin Ghosh, Lecturer in Audiology, JSS Institute of Speech and Hearing, M G Road, Mysore-570004, Karnataka, India, e-mail: vipinghosh78@gmail.com
Publication date: 2020-04-14
 
J Hear Sci 2016;6(4):50–54
 
KEYWORDS
ABSTRACT
Background:
Prolonged exposure to occupational noise can lead to various audiological and non-audiological effects. The present study is a preliminary investigation of the temporal resolution ability of traffic police officers who had a history of exposure to traffic noise for at least 5 years.

Material and Methods:
The study focused on an experimental group of 20 traffic police officers and a control group of 20 agematched individuals without noise exposure. A gap detection test (GDT) and a test of modulation detection thresholds for sinusoidally amplitude modulated noise (TMTF) at 8 Hz, 20 Hz, and 60 Hz were administered to all the participants.

Results:
ANOVA was carried out to check for significant different in performance between the groups, which suggested a main effect of groups. A further t-test was done and no significant difference (p>0.05) between the groups in test performance was observed, suggesting that temporal resolution is not significantly affected in traffic police exposed to traffic noise.

Conclusions:
The present study findings may be attributed to various factors that control the effect of noise on humans. These factors are discussed. However, the population cannot be considered as free from noise-related harms since nonauditory effects of traffic noise, including sleep disturbances, annoyance, hypertension, and stress, have been reported in earlier studies. More research is needed to clarify the situation.

 
REFERENCES (12)
1.
Basner MD, Bbisch W, Davis A, Brink M, Clark C, Janessen S, Stansfeld S. Auditory and non auditory effects of noise on health. Lancet, 2014; 383: 1325–32.
 
2.
Kumar UA, Ameenudin S, Sangamanatha AV. Temporal and speech processing skills in normal hearing individuals exposed to occupational noise. Noise Health 2012; 14: 100–5.
 
3.
Spoorthi ML, Sharmada K, Vikas MD. Effect of long term exposure to class room noise on temporal resolution and speech perception abilities. Proceedings of 47th Indian Speech and Hearing Association Conference, 2015 Jan 1–3, Manipal, Karnataka, India.
 
4.
Diaz J, Ekelund M, Gothe R, Huber M, Jordan A, Kallischnig G et al. Traffic Noise Pollution: A state-of-the-art review. European Commission, DG Health & Consumer Protection, Luxembourg, 2001. Available at http://ec.europa.eu/health//si....
 
5.
Li YC, Huang HJ, Zhang ZL, Qi XY. Effect of occupation on health of traffic policemen in a city. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi, 2008; 26 (3): 165–67 [in Chinese].
 
6.
Lesage FX, Jovenin N, Deschamps F, Vincent S. Noise induced hearing loss in French police officers. Occupational Medicine, 2009; 59(7): 483–86.
 
7.
Grassi M, Soranzo A. MLP: A MATLAB toolbox for rapid and reliable auditory threshold estimation. Behav Res Methods, 2009; 41: 20–28.
 
8.
Kyaw NW, Nayake BPB, Min ZL, Alice Lai. Noise induced hearing loss in the police force. Safety Health Work, 2015; 6(2): 134–38.
 
9.
Johnson DL, Papadopoulos P, Watfa N, Takala. Exposure criteria, occupational exposure levels. In: B. Goelzer, C. H. Hansen, and G. A. Sehrndt, editors. Occupational Exposure to Noise: Evaluation, prevention and control. Dortmund/Berlin: World Health Organization, 2001; 79–102.
 
10.
Shukla SP, Yadav SK, Lohani B, Biswas S, Behra SN, Singh NB et al. Characterization of traffic noise for a typical Indian road crossing. Current Science, 2012; 103(10): 1193–201.
 
11.
Bhosale BJ, Late A, Nalawade PM, Chavan SP, Mule PB. Studies on assessment of traffic noise level in Aurangabad city, India. Noise Health, 2010; 12(48): 195–98.
 
12.
Trzaskowski B, Jędrzejczak WW, Piłka E, Cieślicka M, Skarżyński H. Otoacoustic emissions before and after listening to music on a personal player. Med Sci Monit, 2014; 20: 1426–31.