Mapping technique in deaf children enter cochlear implantation
Objective To discuss the methods of mapping in cochlear implant for young children. Methods The behavioral observasion and obejective method were used to mapping in 79 young deaf children after the electrode impedance test. Results 74 patients obtained normal implant function. 1 electrode in 3 patients and 2 electrodes in 2 patients were abnormal,72 patients used behavioral observation and 6 patients used obejective method to mapping. The accurate hearing responses was obtained by 40 patients in a month and-38 patients in two or three months. Hearing threshold was shown in upper part of the speech spectrum. Investigation showed they did not feel discomfort when they heard loudsound. Their responses to many kind of undertone was sensitive quickly after switch on the devices. They had significant progress hearing and speaking. Conclution The methods of mapping in cochlear implant for young deaf children include behavioral observasion and obejective method, but the behavioral observasion is more important.