title: [Study of ceiling effect of commonly used Chinese recognition materials in post-lingual deafened patients with cochlear implant].
abstract: OBJECTIVE
  To evaluate and compare outcomes effects of Chinese recognition materials in post-lingually deafened patients with cochlear implant.
  
  
  METHODS
  Thirty-two post-lingually deafened cochlear implant users participated in the study. Each one of them was given a series of speech recognition tests including the speech recognition score of monosyllable words, spondee words, Chinese BKB sentences and MHINT in quiet, as well as speech recognition threshold of HOPE corpus in babble noise. Speech recognition scores and thresholds were compared among these test materials using histograms , scatter diagrams and statistical methods.
  
  
  RESULTS
  Recognition scores for spondee words, Chinese BKB sentences and MHINT were affected by ceiling effects, with 1,14 and 4 cases scored 100% respectivelty. Meanwhile, 17, 26 and 14 cases scored more than 85% correspondingly. On the other hand, speech recognition scores for monosyllable words in quiet and speech recognition threshold for HOPE corpus in babble noise were not affected.
  
  
  CONCLUSIONS
  For a considerable part of post-lingually deafened patients using cochlear implant, some Chinese speech recognition materials have demonstrated different degrees of ceiling effects. While speech recognition scores for monosyllable words in quiet and recognition threshold for HOPE corpus in noise can evaluate the performance of speech recognition abilitymore objectively.
authors.forename: Ye
authors.initials: Y
authors.lastname: Wang
authors.forename: Ya
authors.initials: Y
authors.lastname: Shi
authors.forename: Ying
authors.initials: Y
authors.lastname: Fu
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
authors.forename: Yifei
authors.initials: Y
authors.lastname: Fu
authors.forename: Xin
authors.initials: X
authors.lastname: Xi
mesh_terms: D019929:Cochlear Implantation; D003054:Cochlear Implants; D006801:Humans; D007802:Language; D009622:Noise; D013067:Speech Perception; D016896:Treatment Outcome