[The psychophysical tests in different age of patients with cochlear implants].
OBJECTIVE
The aim of this research is to analyse and compare the psychophysical tests in different age of patients with a cochlear implant.


METHODS
One hundred and seventy patients with Nucleus CI24M cochlear implant system participated in this study. The patients were divided into four groups according to their age. They were group A (<3 year), B(3-<6 year) C(6-12 year) and D(>12 year). The psychophysical tests included T and C-Level evaluation.


RESULTS
C-Levels of each electrode (except electrode No. 20) were significantly different between group A and D at the time of one month after switch-on (P<0.01, P<0.05 for the No. 2, 18, 19, 21, 22 electrode). The normalized differences between used C-Levels and C-Levels for group D were significantly higher than the other three groups at the switch-on session (P<0.01, P<0.05 between group D and C). The normalized differences between used C-Levels and C-Levels were significantly different for the group A and D at one week after first programming session (P<0.05).


CONCLUSIONS
T and C-Level for different age groups were different. The normalized differences between used C-Levels and C-Levels were significantly different among the four groups in the few weeks after switch-on.
Chen
Xueqing
X
Department of Speech and Hearing Rehabilitation, Beijing Institute of Otolaryngology, Affiliated Beijing Tongren Hospital of Capital University of Medical Sciences, Beijing, 100005, China.
Han
Demin
D
Zhao
Xiaotian
X
Kong
Ying
Y
Liu
Sha
S
Mo
Lingyan
L
Liu
Bo
B
Zheng
Jun
J
Li
Yongxin
Y
Wang
Shuo
S
Wu
Yanjun
Y
D000293:Adolescent; D000367:Age Factors; D001309:Auditory Threshold; D002648:Child; D002675:Child, Preschool; D003054:Cochlear Implants / Q000523:psychology*; D006801:Humans; D011603:Psychophysiology; D012684:Sensory Thresholds