听力正常个体听觉诱发电位中潜伏期反应的振幅和潜伏期研究
Middle latency response study of auditory evoked potentials amplitudes and lantencies audiologically normal individuals.
作者信息
Neves Ivone Ferreira, Gonçalves Isabela Crivellaro, Leite Renata Aparecida, Magliaro Fernanda Cristina Leite, Matas Carla Gentile
机构信息
FMUSP, São Paulo, SP, Brazil.
出版信息
Braz J Otorhinolaryngol. 2007 Jan-Feb;73(1):69-74. doi: 10.1016/s1808-8694(15)31125-3.
UNLABELLED
Contemporary cohort cross-sectional study.
INTRODUCTION
The auditory middle latency response (AMLR) is generated between 10 and 80 ms and has multiple generators, with a greater contribution from the thalamus-cortical pathways. The establishment of normality criteria for latency and amplitude values is necessary for clinical use.
AIM
to analyze the latency and amplitude of the AMLR in individuals without audiological disorders, and verify the reliability of Pa-Nb amplitude.
MATERIALS AND METHODS
The AMLR of 25 individuals was collected during 2005 and the Na, Pa, Nb components were analyzed for each tested ear (A1 and A2), and electrode positioning (C3 and C4).
RESULTS
A statistically significant difference was noticed among middle latency values for C3A1 and C4A1 regarding components Na and Pa, and no difference for component Nb and mean values for amplitudes Na-Pa and Pa-Nb.
CONCLUSIONS
We established average and standard deviation values for latency and amplitude parameters for components Na, Pa, Nb and Na-Pa and Pa-Nb, under conditions C3A1, C4A1, C3A2, C4A2, providing a parameter for the analysis and interpretation of this potential.
未标注
当代队列横断面研究。
引言
听觉中潜伏期反应（AMLR）在10至80毫秒之间产生，有多个发生器，丘脑 - 皮质通路的贡献更大。建立潜伏期和波幅数值的正常标准对于临床应用是必要的。
目的
分析无听力障碍个体的AMLR潜伏期和波幅，并验证Pa - Nb波幅的可靠性。
材料与方法
2005年收集了25名个体的AMLR，对每只受试耳（A1和A2）以及电极位置（C3和C4）分析Na、Pa、Nb成分。
结果
在C3A1和C4A1的中潜伏期值中，Na和Pa成分存在统计学显著差异，而Nb成分以及Na - Pa和Pa - Nb波幅平均值无差异。
结论
我们在C3A1、C4A1、C3A2、C4A2条件下，建立了Na、Pa、Nb以及Na - Pa和Pa - Nb成分潜伏期和波幅参数的平均值和标准差数值，为该电位的分析和解释提供了一个参数。
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