title: Impact of auditory cortical asymmetry in cochlear implantation.
abstract: OBJECTIVE
  Is there a cochlear implant ear advantage for speech perception? Patients A total number of 68 cochlear implant recipients were evaluated retrospectively. They were 20 adults implanted in right ear, 20 matched adults implanted in left ear while 14 children implanted in right ear and 14 matched children implanted in left ear.
  
  
  METHODS
  Behavioral responses & age based speech perception tests were evaluated at 6 months and 1 year post implantation.
  
  
  RESULTS
  Adult showed no statistical difference in all tests at 6 months evaluation while 1 year evaluation showed significant better performance for right implanted group in monosyllabic discrimination test. Children showed statistical significant performance in monosyllabic identification and minimal pairs testes at 6 months evaluation; and in monosyllabic identification only at 1 year evaluation.
  
  
  CONCLUSIONS
  The present data support that right ear implantation would fasten the development of auditory skills especially in young children, an issue to be considered in unilateral implantation.
authors.forename: Nadia
authors.initials: N
authors.lastname: Kamal
authors.forename: Somaia
authors.initials: S
authors.lastname: Tawfik
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Mahrous
mesh_terms: D000293:Adolescent; D000328:Adult; D001299:Audiometry / Q000379:methods; D001303:Auditory Cortex / Q000002:abnormalities*; D002648:Child; D002675:Child, Preschool; D019929:Cochlear Implantation / Q000009:adverse effects / Q000379:methods*; D003054:Cochlear Implants; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006312:Hearing Loss, Bilateral / Q000175:diagnosis / Q000601:surgery*; D006320:Hearing Tests; D006801:Humans; D008875:Middle Aged; D012189:Retrospective Studies; D018570:Risk Assessment; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric; D016896:Treatment Outcome; D055815:Young Adult
keywords: Auditory cortical asymmetry; Monaural cochlear implantation; Outcomes