Verification of the Mismatch Negativity (MMN) responses in normal adult subjects

Revista Brasileira de Otorrinolaringologia

USP¹  Universidade de Franca¹  Borba, Karen Cristina¹  Garcia, Cristiane Fregonesi Dutra¹  Isaac, Myriam de Lima¹  Reis, Ana Cláudia Mirândola Barbosa¹  Brossi, Adriana Bortoleto¹  Universidade de São Paulo¹ 

关键词: auditory cortex;    evoked auditory potentials;    event related potentials.;   

DOI  :  10.1590/S0034-72992007000600011

学科分类：医学（综合）

来源: Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial

【 摘 要 】

Mismatch Negativity (MMN) is used to evaluate the central auditory system. AIM: to characterize the MMN, in normal subjects. MATERIALS AND METHODS: prospective study, 12 subjects, six males and six females, between the ages of 18 and 24. "Mann-Whytnei" test. EXAMS: Pure Tone Audiometry (PTA), Tympanometry, Otoacoustic Emissions and Short and Long Latency Auditory Potentials (MMN). RESULTS: in MMN variable amplitude, the mean value was of -2.757 µV and -3.548 µV, CZA1 and CZA2; of 1.435 µV and -1.867 µV, CZA1 and CZA2. In variable and medium latency, we found in 150.7ms and 153.2ms, CZA1 and CZA2; in 170.4ms and 184.0ms, CZA1 and CZA2 - for females and males respectively. CONCLUSION: related to latency, there was significant statistical difference between the genders in relation to CZA1 and CZA2; and it was lower for females and higher for males.

【 授权许可】

Unknown