Standard characterization of P300 in young adults

Revista da Sociedade Brasileira de Fonoaudiologia

Machado, Cíntia Santos Silva¹  Pontifícia Universidade Católica de Minas Gerais¹  Silva, Paloma Luara Guerra e¹  Unicentro Izabela Hendrix, Belo Horizonte, Brasil¹  Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brasil¹  Carvalho, Angélika Caldeira Oliveira¹ 

关键词: Hearing tests;    Evoked potentials;    auditory;    Event-related potentials;    P300;    Adult;   

DOI  :  10.1590/S1516-80342009000100014

来源: Sociedade Brasileira de Fonoaudiologia

【 摘 要 】

PURPOSE: To compare the values of latency and amplitude of P300 of healthy Brazilian young adults with the data available on the literature, in order to establish a normative standard for future studies. In addition, the aim was also to verify if the values found in the sample were correlated to gender, situation proposed in the methodology of the examination, and phase of menstrual cycle.METHODS: The sample consisted of 22 healthy individuals, without any attention complaints, neurological or auditory disorders, and with ages ranging from 18 to 30 years. All subjects carried out basic audiological evaluation in order to exclude those with hearing loss. The P300 test was carried out in a quiet room, using the two channels equipment AMPLAID MK22.RESULTS: The latency values obtained in the sample, after compared with the literature reference, were in accordance with the latency intervals between 220 e 380 ms. Only amplitude values were influenced by gender and phase of the menstrual cycle.CONCLUSION: The latency values of the sample were not influenced by the variables gender, methodology of the testing situation and menstrual cycle, and were in accordance to the latency interval values between 220 and 380 ms. Amplitude values were influenced by gender and menstrual cycle, but were not in accordance to the values found in literature.

【 授权许可】

Unknown