title: Comparative study between pure tone audiometry and auditory steady-state responses in normal hearing subjects.
abstract: BACKGROUND
  Auditory steady-state responses (ASSR) are an important tool to detect objectively frequency-specific hearing thresholds. Pure-tone audiometry is the gold-standard for hearing evaluation, although sometimes it may be inconclusive, especially in children and uncooperative adults.
  
  
  OBJECTIVE
  Compare pure tone thresholds (PT) with ASSR thresholds in normal hearing subjects.
  
  
  METHODS
  In this prospective cross-sectional study we included 26 adults (n = 52 ears) of both genders, without any hearing complaints or otologic diseases and normal puretone thresholds. All subjects had clinical history, otomicroscopy, audiometry and immitance measurements. This evaluation was followed by the ASSR test. The mean pure-tone and ASSR thresholds for each frequency were calculated.
  
  
  RESULTS
  The mean difference between PTand ASSR thresholdswas 7,12 for 500 Hz, 7,6 for 1000 Hz, 8,27 for 2000 Hz and 9,71 dB for 4000 Hz. There were no difference between PT and ASSR means at either frequency.
  
  
  CONCLUSIONS
  ASSR thresholds were comparable to pure-tone thresholds in normal hearing adults. Nevertheless it should not be used as the only method of hearing evaluation.
authors.affiliation: Universidade de São Paulo, Faculdade de Medicina, Departamento de Otorrinolaringologia, São PauloSP, Brasil, Departamento de Otorrinolaringologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil.
authors.forename: Roberto Miquelino de Oliveira
authors.initials: RM
authors.lastname: Beck
authors.affiliation: Universidade de São Paulo, Faculdade de Medicina, Departamento de Otorrinolaringologia, São PauloSP, Brasil, Departamento de Otorrinolaringologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil.
authors.forename: Bernardo Faria
authors.initials: BF
authors.lastname: Ramos
authors.affiliation: Universidade de São Paulo, Faculdade de Medicina, Departamento de Otorrinolaringologia, São PauloSP, Brasil, Departamento de Otorrinolaringologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil.
authors.forename: Signe Schuster
authors.initials: SS
authors.lastname: Grasel
authors.affiliation: Universidade Federal do Espírito Santo, Hospital Universitário Cassiano Antônio de Moraes, VitóriaES, Brasil, Hospital Universitário Cassiano Antônio de Moraes, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brasil.
authors.forename: Henrique Faria
authors.initials: HF
authors.lastname: Ramos
authors.affiliation: Universidade de São Paulo, Faculdade de Medicina, Departamento de Otorrinolaringologia, São PauloSP, Brasil, Departamento de Otorrinolaringologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil.
authors.forename: Maria Flávia Bonadia B de
authors.initials: MF
authors.lastname: Moraes
authors.affiliation: Universidade de São Paulo, Faculdade de Medicina, Departamento de Otorrinolaringologia, São PauloSP, Brasil, Departamento de Otorrinolaringologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil.
authors.forename: Edigar Rezende de
authors.initials: ER
authors.lastname: Almeida
authors.affiliation: Universidade de São Paulo, Faculdade de Medicina, Departamento de Otorrinolaringologia, São PauloSP, Brasil, Departamento de Otorrinolaringologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, SP, Brasil.
authors.forename: Ricardo Ferreira
authors.initials: RF
authors.lastname: Bento
mesh_terms: D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D001300:Audiometry, Evoked Response; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold / Q000502:physiology*; D003430:Cross-Sectional Studies; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011446:Prospective Studies; D012016:Reference Values; D055815:Young Adult