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[Tone recognition of REZ-1 multi-channel unilateral cochlear implants for profoundly postlingual deaf adults]
1Department of Otology & Skull Base Surgery, Eye Ear Nose & Throat Hospital, Fudan University, Shanghai 200031, China.
Objective:
To assess the tone recognition of cochlear-implant subjects by a REZ-1 device.
Methods:
Speech recognition experiments were conducted to measure the tone recognition with standard assessment table and standard testing program. A total of 34 postlingual hearing-impaired adults who were native speakers of Mandarin undergoing operations from June to October, 2009 were tested and scored both preoperatively and postoperatively (1, 2, 3, 6, 12 months post-implantation) for speech recognition.
Results:
All patient scores of speech recognition (initials, finals, monosyllabic words & tones) decreased gradually during the postoperative follow-up period. Preoperative speech recognition scores were all 0. And after a 12-month training, their average scores were increased significantly [(70 ± 8)% ± (82 ± 8)%]. Significant statistical differences existed between pre- and post-implantation in each test (P < 0.01).
Conclusion:
REZ-1 cochlear implantation may improve the tone recognition of adults with severe-to-profound postlingual hearing loss in a quiet environment.
