title: Speech perception performance of double array multichannel cochlear implant users with standard and duplicated maps in each of the arrays.
abstract: OBJECTIVE
  The present investigation evaluated the speech perception performance of patients with ossified cochlea implanted with the 24M Double Array cochlear implant, using standard and duplicated maps in each of the arrays.
  
  
  METHODS
  Retrospective case review.
  
  
  METHODS
  Tertiary referral center.
  
  
  METHODS
  Sixteen subjects received a Double Array cochlear implant. Among these, 9 fulfilled the following inclusion criteria: bilateral severe-to-profound postlingual deafness; bilateral obliterated cochlea, as shown by a computed tomographic scan; and a minimum age of 14 years to ensure reliable responses in the behavioral tests with the 3 tested maps.
  
  
  METHODS
  Rehabilitative.
  
  
  METHODS
  The speech perception performance with the 2 arrays was compared with that with a basal array duplicated map and an apical array duplicated map. Three maps were fitted: the default map with both arrays activated, a double channel map using only the electrodes of the basal array, and a double channel map programmed only with the electrodes of the apical array. The test battery was composed of a vowel test, a 4-choice word test, and sentence recognition in quiet.
  
  
  RESULTS
  Statistical significance was reached in comparison the all tests in all programming conditions. Speech recognition in the standard map with both electrode arrays activated showed the highest scores.
  
  
  CONCLUSIONS
  Performance with the 2 split electrode arrays was superior to those with the single arrays, regardless of the duplication of channels.
authors: Department of Otolaryngology, University of São Paulo, School of Medicine, São Paulo, Brazil. rbento@gmail.com
authors: Ricardo Ferreira
authors: RF
authors: Bento
authors: Maria Valéria Schmidt
authors: MV
authors: Goffi-Gomez
authors: Robinson Koji
authors: RK
authors: Tsuji
authors: Anna Carolina de Oliveira
authors: AC
authors: Fonseca
authors: Liliane Satomi
authors: LS
authors: Ikari
authors: Rubens Vuono de
authors: RV
authors: Brito Neto
mesh_terms: D000293:Adolescent; D000328:Adult; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold / Q000502:physiology; D015834:Cochlear Diseases / Q000209:etiology / Q000534:rehabilitation*; D003054:Cochlear Implants; D004566:Electrodes; D005260:Female; D006801:Humans; D008297:Male; D008581:Meningitis / Q000150:complications; D008875:Middle Aged; D010898:Pitch Perception / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology*; D012189:Retrospective Studies; D013067:Speech Perception / Q000502:physiology*; D013686:Telemetry; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome