title: Evaluation of Hearing Sensitivity in Young Adults With Normal Hearing Using a 40-Hz Auditory Steady-State Response With CE-Chirp.
abstract: OBJECTIVE
  The present study aimed to measure hearing sensitivity in young adults with normal hearing using a 40-Hz auditory steady-state response with CE-Chirp and to evaluate the speed and accuracy of this method.
  
  
  METHODS
  Twelve young adults (1 man, 11 women; mean age = 22.1 ± 3.1 years) each completed two auditory steady-state response measurement sessions with CE-Chirp. The difference score was calculated at each of the four pure-tone frequencies. The measurement time and residual noise level in all stimulus levels were also determined.
  
  
  RESULTS
  The difference scores across the 4 frequencies ranged within ±10 dB (1st: 58% to 71%, 2nd: 54% to 79%), within 20 dB (1st: 79% to 96%, 2nd: 79% to 100%), and ≥ 30 dB (1st: 4% to 17%, 2nd: 0% to 17%). The measurement times for both ears were approximately 20 min in both sessions. There was a significant correlation between the measurement time and the mean residual noise level for pooled frequencies in all stimulus levels (p = .0001249, r = .70). The measurement time was reduced by approximately 50% from conventional auditory steady-state response measurement.
  
  
  CONCLUSIONS
  The results of this preliminary study support the use of this technology as a rapid and accurate method for behavioral auditory threshold evaluation.
authors.affiliation: Department of Communication Disorders of Rehabilitation Science, Health Sciences University of Hokkaido, Sapporo, Japan.
authors.forename: Hidehiko
authors.initials: H
authors.lastname: Maeda
authors.affiliation: Department of Communication Disorders of Rehabilitation Science, Health Sciences University of Hokkaido, Sapporo, Japan.
authors.forename: Eiko
authors.initials: E
authors.lastname: Tamashige
authors.affiliation: Department of Rehabilitation, Tokachi Rehabilitation Center, Obihiro, Japan.
authors.forename: Narumi
authors.initials: N
authors.lastname: Iwasaki
authors.affiliation: Department of Rehabilitation, Nishimaruyama Hospital, Sapporo, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Urano
authors.affiliation: Department of Oto-Rhino Laryngology, Head and Neck Surgery, Hokkaido University Hospital, Sapporo, Japan.
authors.forename: Ayaka
authors.initials: A
authors.lastname: Kanazawa
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods*; D000328:Adult; D001301:Audiometry, Pure-Tone / Q000379:methods*; D001309:Auditory Threshold / Q000502:physiology*; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D064368:Healthy Volunteers; D006801:Humans; D008297:Male; D011930:Reaction Time; D012016:Reference Values; D012680:Sensitivity and Specificity; D055815:Young Adult