title: Perceptual acclimatization post nonlinear frequency compression hearing aid fitting in older children.
abstract: OBJECTIVE
  In this study, the authors evaluated the effect of frequency compression hearing aids on speech perception ability and the time course and magnitude of acclimatization-related changes.
  
  
  METHODS
  Participants included children ages 11-18 years. Speech perception ability was evaluated over well-controlled baseline, treatment, and withdrawal study phases. Study-worn hearing aids were individually fitted to all participants. The authors evaluated speech perception ability using outcomes of speech detection (/s/ and /[symbol in text]/ sounds), /s-[symbol in text]/ discrimination, and plural and consonant recognition.
  
  
  RESULTS
  Indices of change were discussed on a case-by-case basis across all study phases. Significant treatment effects were measured for all cases, on at least one measure, with some listeners displaying significant acclimatization trends following a trial of frequency compression.
  
  
  CONCLUSIONS
  Findings suggest that frequency compression provided varying outcomes, both in benefit and acclimatization, across listeners. For some, a period of acclimatization was necessary before change could be measured. For others, performance remained stable over the time course under evaluation, suggesting that some but not all children will experience improved speech recognition ability after a period of frequency compression hearing aid use.
authors.affiliation: National Centre for Audiology, University of Western Ontario, London, Ontario, Canada. daglista@nca.uwo.ca
authors.forename: Danielle
authors.initials: D
authors.lastname: Glista
authors.forename: Susan
authors.initials: S
authors.lastname: Scollie
authors.forename: Jacob
authors.initials: J
authors.lastname: Sulkers
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology*; D000293:Adolescent; D000367:Age Factors; D001301:Audiometry, Pure-Tone; D002648:Child; D012048:Correction of Hearing Impairment / Q000379:methods*; D005260:Female; D006310:Hearing Aids; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology* / Q000534:rehabilitation*; D006801:Humans; D008297:Male; D008954:Models, Biological; D017711:Nonlinear Dynamics; D010700:Phonetics; D010898:Pitch Perception / Q000502:physiology; D017755:Prosthesis Fitting; D013067:Speech Perception / Q000502:physiology*; D016896:Treatment Outcome