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The speech recognition characteristic of bilateral cochlear implanted deaf children-A report of 2 cases

Objective To evaluate and analyse the results of speech recognition in two patients with bilateral cochlear implants, explore the way that the auditory system integrate information provided by two devices. Method Two congenital-deafened children with bilateral cochlear implants participated in this study. The subjects were tested in three conditions: with both implants, with the right impfant onfy, and with the left implant only. Speech tests included numbers, monosyllables and bisyllables. Results The speech scores were different in different conditions (p0.01).The scores were 0% in all conditions when the second device was used only in the first time. The scores were higher using bilateral implants than using one only when the subjects tested by bisyllahles. When the subjects were tested by numbers and bisyllables, the scores were similar. Longer the bilateral cochlear implants were used, higher the speech scores were. Conclusion:The auditory system may be deal with different signal in different ways. Bilateral cochlear implantation provides a significant benefit in speech understanding.The hearing training is necessary.
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