Potenciais corticais auditivos e modulação autonômica cardíaca em mulheres saudáveis

• Autor(a) principal: Regaçone, Simone Fiuza [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/135990; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/24-02-2016/000858904.pdf
• topic: Eletrofisiologia; Batimento cardíaco; Potenciais auditivos evocados; Sistema nervoso autonomo; Auditory evoked response

Introduction: The auditory cortical potentials and heart rate variability are widely studied topics in the national and international literature. Although few studies associating these two endpoints of the nervous system. Objective: To analyze the association between auditory cortical potentials and cardiac autonomic modulation due to different acoustic stimuli. Methods: We analyzed 60 healthy women, aged between 18 and 25 years. Inclusion criteria were: absence of cardiorespiratory disorders, cognitive, psychiatric, neurological and medical treatment to influence the cardiac autonomic regulation; individuals who did not drink alcohol in excess in the last 24 hours and no longer in smokers for at least one year; pure tone audiometry and impedance tests with normal results with type A curve and ipsilateral and contralateral reflexes present. Before examining the cortical potential, were measured blood pressure and heart rate at rest with stethoscope and sphygmomanometer aid and heart rate monitor Polar RS800CX. After collecting these measures, started the examination of cortical potential while the collection of heart rate variability. Linear indices in the field of time and frequency were analyzed using the Kubios HRV analysis software - version 2.0. Descriptive statistical analysis was analyzed by mean and standard deviation, whereas for the inferential analysis the following tests were applied: Pearson correlation test for parametric and Spearman distributions to non-parametric distributions. Results: Correlations were observed between the auditory cortical potentials and indexes of heart rate variability. When analyzed in the time domain, SDNN index correlated with the P3a latency and amplitude of P2, and P3a; the RMSSD index correlated with the latencies of N1, P2, N2 and amplitudes of P3a and MLM and interamplitude of N2-P3a; pNN50 index correlated with the latencies of N1 and P2 and with the amplitudes of P3a and MLM and...