title: Cortical auditory evoked potential (P1): a potential objective indicator for auditory rehabilitation outcome.
abstract: OBJECTIVE
  Cortical auditory evoked potentials are a non-invasive tool that can provide objective information on maturation of the auditory pathways. This work was designed to study the role of cortical auditory evoked potential (P1) in assessment of the benefits of amplification and aural rehabilitation in hearing impaired children.
  
  
  METHODS
  The study consisted of 31 children classified into 2 groups. Study group included 18 hearing impaired children ranging in age 4-14 years old and classified into two subgroups according to adequacy of aural rehabilitation. A control group consisted of 13 normal hearing children ranging in age from 5 to 13 years. All children were subjected to history taking, basic audiological evaluation, intelligence quotient and language assessment. Cortical auditory evoked potential (P1) was measured using synthesized speech syllable /da/ as a recording stimulus that was presented binaurally via a loudspeaker.
  
  
  RESULTS
  P1 was recorded in all children with significantly prolonged latencies in hearing impaired children with inadequate rehabilitation. P1 latency was correlated to hearing loss duration in hearing impaired children with inadequate aural rehabilitation. Auditory experience was correlated with P1 latency in hearing impaired children with adequate aural rehabilitation.
  
  
  CONCLUSIONS
  Cortical auditory evoked potential (P1) might provide a clinical tool to monitor aural rehabilitation outcome and to guide intervention choices.
authors.affiliation: Audiology Unit, Faculty of Medicine, Ain Shams University, Egypt.
authors.forename: Mirahan T
authors.initials: MT
authors.lastname: Thabet
authors.forename: Nithreen M
authors.initials: NM
authors.lastname: Said
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001306:Auditory Pathways / Q000502:physiology; D001309:Auditory Threshold / Q000502:physiology; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D012048:Correction of Hearing Impairment / Q000379:methods*; D004534:Egypt; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D034381:Hearing Loss / Q000175:diagnosis* / Q000534:rehabilitation*; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000379:methods; D015999:Multivariate Analysis; D011930:Reaction Time / Q000502:physiology; D012016:Reference Values; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome