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Temporal auditory processing in rural workers exposed to pesticide
Martha Marcela de Matos Bazilio1, Silvana Frota, Juliana Rezende Chrisman
1Institute for Studies in Public Health, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil. celauni@yahoo.com.br
Jornal Da Sociedade Brasileira De Fonoaudiologia
|July 27, 2012
Summary
Rural workers exposed to pesticides showed impaired auditory processing. Higher pesticide exposure correlated with poorer performance on temporal auditory processing tests, indicating potential harm to auditory pathways.
Area of Science:
- Occupational Health
- Neuroscience
- Audiology
Background:
- Pesticide exposure is common in rural settings.
- Auditory processing deficits can impact quality of life and work performance.
- Central auditory pathways may be vulnerable to neurotoxicants.
Purpose of the Study:
- To evaluate auditory abilities in pesticide-exposed rural workers.
- To compare auditory performance with a pesticide exposure index.
- To investigate the relationship between pesticide exposure and temporal auditory processing.
Main Methods:
- A cross-sectional study of 33 rural pesticide-exposed workers (18-59 years).
- Utilized questionnaires, audiological evaluation, and Temporal Auditory Processing tests (Pattern test duration, Gaps-in-Noise).
- An 'index of exposure' was calculated and compared with test results categorized by tertiles.
Main Results:
- Significant differences in auditory processing were found across exposure tertiles.
- A dose-response relationship was observed: higher pesticide exposure correlated with worse performance.
- Performance on pattern test duration and Gaps-in-Noise significantly declined with increased exposure (p<0.001).
Conclusions:
- Pesticide-exposed workers demonstrated below-average temporal auditory processing skills.
- A clear association exists between pesticide exposure levels and poorer auditory processing.
- Findings suggest pesticides may adversely affect the central auditory system.
