人工耳蜗和助听器同时使用的听觉事件相关电位研究

Study on auditory event related potential with cochlear and hearing aid meanwhile

目的探讨人工耳蜗和助听器同时使用者的听觉事件相关电位(ERP)的变化,对人工耳蜗和助听器同时使用所产生的2耳听效果进行客观评价。方法分别在同时使用人工耳蜗和助听器(CI&HA)及单独使用人工耳蜗(CI)两种状态下测定ERP的主要成分P300、N200和N100的潜伏期及P300振幅。结果CI&HA时P300的平均潜伏期为(388.96±62.61)ms,N200为(267.00±45.43)ms,N100为(94.58±9.10)ms,P300平均振幅为(13.69±3.26)μV;CI时P300的平均潜伏期为(412.08±54.32)ms,N200为(289.21±37.40)ms,N100为(99.38±13.15)ms,P300平均振幅为(12.23±2.97)μV。P300平均潜伏期和N200平均潜伏期在CI&HA时较CI时缩短,差异有统计学意义。结论2耳同时使用声音处理方式完全不同的人工耳蜗和助听器,中枢处理过程并不拮抗,能够得到2耳听效果。

Objective：Study the changes of auditory event related potential （ERP）, as well as evaluate objectively auditory effect of both ears, when cochlea implant and hearing aid are applied meanwhile. Method：Put 6 sampies into 2 different groups： CI＆HA（cochlea implant and hearing aid meanwhile） group and CI （cochlea implant only）group. Test the latent periods of P300,N200,N100,and the amplitude of P300, which are the main parts of ERP. Result：All of the latent periods of P300 and N200 in CI＆HA group were shorter,compared with those in CI group respectively. The difference was significant. In CI＆HA group, the average latent period of P300 was （388.96± 62. 61）ms, the average amplitude was （13. 69 ± 3. 26）μV, the average latent period of N200 was （267.00±45.43）ms, the average latent period of N100 was（94.58±9.10）ms. In CI group,the average latent period of P300 was（412.08±54.32）ms, the average amplitude was（12.23±2.97）μV, the average latent period of N200 was （289. 21 ±37. 40）ms, the average latent period of N100 was （99. 381 ± 13.15）ms. Conclusion： When both ears use cochlear and hearing aid meanwhile, which are under different working patterns, the central progress has no resistance. Thus,auditory effect could be obtained in both ears.