Abstract: Objective To explore the relationship between neural response telemetry(NRT)threshold and T-level behavior in patients with cochlear implants, and to explore how we can render NRT more useful for us to obtain the best map for patients with cochlear implants who may not cooperate well to obtain accurate T-level behavior. Methods Twenty children were implanted with the cochlear Nucleus CI24R system. At each mapping procedure, the NRT thresholds of electrodes 1, 11, and 20 based on the evoked responses were tested. The children had accepted a time for experience and training until they could cooperate well for testing and the T-level behavior could be used for mapping. The changes in the NRT threshold and the correlation between the NRT threshold and the T-level behavior at 12 and 24 months after switch-on were then compared. Results There was no significant difference in the NRT thresholds of electrodes 1 and 22 at 6 months, and there was a significant difference in the NRT threshold of electrode 11 at 6 months. There was no significant difference in the T-level behavior between the three pairs of electrodes at 1 and 2 years. The NRT threshold was compared with the T-level behavior after switch-on, and only electrode 22 exhibited a statistically significant difference, while the other two pairs of electrodes did not exhibit statistically significant differences. The 6-month NRT threshold was compared with the T-level behavior, and a significant difference was noted in electrode 1. The 6-month NRT thresholds of electrodes 11 and 22 and the 1-year T-level behavior was statistically significant, and the 2-year T-level behavior was not statistically significant. Conclusion The stability of the NRT threshold of each electrode is maintained from the time of initiation, and the correlation between NRT threshold and T-level behavior 山东大学耳鼻喉眼学报31卷5期 -罗琼,等.人工耳蜗术后编程中神经反应遥测阈值及行为T值的比较分析 \=-indicates that children cannot cooperate initially to perform the behavior test. The NRT threshold can be used to refer to the cochlea. The 2-year T-level behavior also remained stable, indicating that children can better match the 1-year T-level behavior after testing, with the better children being appropriate to extend the debugging time.

Key words: Cochlear, Neural response telemetry, Mapping