title: [Auditory temporal processing assessment in rural workers exposed to organophosphate pesticides].
abstract: OBJECTIVE
  To evaluate the auditory temporal processing in workers occupationally exposed to organophosphate pesticides.
  
  
  METHODS
  Cross-sectional study in which 43 rural workers of both genders with bilaterally normal auditory thresholds that were occupationally exposed to organophosphates were assessed. The procedures included the following items: questionnaire regarding personal and professional background, period of exposition to organophosphates, otoscopy, pure-tone audiometry. Auditory temporal processing was tested through: the Frequency Pattern Test, the Duration Pattern Test and the Gaps-In-Noise Test. Performance on the tests were analyzed, as well as differences between left and right ears on the Gaps-In-Noise Test, and education level in all tests.
  
  
  RESULTS
  In great part of the subjects, auditory temporal processing performance was below normal standards. There was no difference between ears on the Gaps-In-Noise Test (p=0.33). Additionally, no differences were found on any of the tests according to education level (Gaps-In-Noise: p=0.21 on the right ear, and p=0.053 on the left ear; Frequency Pattern Test: p=0.37; Duration Pattern Test: p=0.84).
  
  
  CONCLUSIONS
  Temporal resolution and temporal order abilities were altered in individuals occupationally exposed to organophosphate pesticides, even when they showed normal peripheral auditory thresholds.
authors.affiliation: Programa de pós-graduação (Mestrado) em Saúde Coletiva do Instituto de Estudos em Saúde Coletiva, Universidade Federal do Rio de Janeiro – UFRJ – Rio de Janeiro (RJ) Brasil. carlacamarinha@yahoo.com.br
authors.forename: Carla Regina
authors.initials: CR
authors.lastname: Camarinha
authors.forename: Silvana Maria Montes Coelho
authors.initials: SM
authors.lastname: Frota
authors.forename: Heloísa
authors.initials: H
authors.lastname: Pacheco-Ferreira
authors.forename: Marco Antonio de Melo Tavares de
authors.initials: MA
authors.lastname: Lima
mesh_terms: D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D000382:Agricultural Workers' Diseases / Q000139:chemically induced*; D001307:Auditory Perception; D001309:Auditory Threshold; D003430:Cross-Sectional Studies; D005260:Female; D006311:Hearing Disorders / Q000139:chemically induced*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure / Q000009:adverse effects*; D009943:Organophosphorus Compounds / Q000633:toxicity*; D012424:Rural Population; D055815:Young Adult
chemical_list: D009943:Organophosphorus Compounds