A carregar...
Publicação
Consequências autonómicas dos binaural beats
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 701.8 KB | Adobe PDF |
Autores
Orientador(es)
Resumo(s)
Os binaural beats são sons aparentes que se originam quando o cérebro integra dois sinais sonoros que são apresentados dicoticamente e de frequências próximas, que por sua vez produzem a sensação de um terceiro som. A relação destes sons com a modulação das ondas cerebrais parece estar relacionado com mudanças de estados de consciência (concentração, relaxamento), e existem poucos estudos na área que demonstrem a influência dos binaural beats no sistema nervoso autónomo. Neste trabalho pretendeu-se demonstrar os efeitos dos binaural beats no sistema nervoso autónomo recorrendo à análise da variação do ritmo cardíaco o qual apresenta dois importantes componentes de interesse neste estudo, o componente de alta frequência (HF) que se considera ser de origem parassimpática e o componente de baixa frequência (LF) de origem simpática. Os participantes (n=6/7, idades entre 21-37 anos) saudáveis, foram expostos a binaural beats Beta de 20 Hz e Teta de 7 Hz, durante 15 e 20 minutos, respectivamente. Foram analisados os primeiros 2 minutos e os últimos 5 minutos de exposição. Os resultados sugerem que é possível existir uma maior influência dos binaural beats Teta com maior presença parassimpática durante os primeiros minutos de estímulo, sem ser possível tirar aparentes conclusões acerca do estímulo com binaural beats Beta.
Binaural Beats are apparent sounds that originate when the brain integrates two tones from nearby frequencies presented dichotically, which in turn produce the sensation of a third sound. The relationship of these sounds with the modulation of brain waves appears to be related to changes in states of consciousness (concentration, relaxation), and there are few studies in demonstrating the influence of binaural beats in the autonomic nervous system. In this work it was intended to demonstrate the effects of binaural beats on the autonomic nervous system using the analysis of heart rate variation which has two main components of interest in this study, the high-frequency component (HF) which is considered to be parasympathetic origin and the low frequency (LF) component of sympathetic origin. The participants (n = 6/7 aged 21-37 years) healthy, were exposed to binaural beats Beta (20Hz) and Theta (7 Hz) for 15 and 20 minutes, respectively. The first 2 minutes and the last 5 minutes of exposure were analyzed. The results suggest that it is possible to have a greater influence of Theta binaural beats with greater parasympathetic presence during the first minutes of stimulation, without being possible to draw conclusions about the apparent stimulation with binaural beats Beta.
Binaural Beats are apparent sounds that originate when the brain integrates two tones from nearby frequencies presented dichotically, which in turn produce the sensation of a third sound. The relationship of these sounds with the modulation of brain waves appears to be related to changes in states of consciousness (concentration, relaxation), and there are few studies in demonstrating the influence of binaural beats in the autonomic nervous system. In this work it was intended to demonstrate the effects of binaural beats on the autonomic nervous system using the analysis of heart rate variation which has two main components of interest in this study, the high-frequency component (HF) which is considered to be parasympathetic origin and the low frequency (LF) component of sympathetic origin. The participants (n = 6/7 aged 21-37 years) healthy, were exposed to binaural beats Beta (20Hz) and Theta (7 Hz) for 15 and 20 minutes, respectively. The first 2 minutes and the last 5 minutes of exposure were analyzed. The results suggest that it is possible to have a greater influence of Theta binaural beats with greater parasympathetic presence during the first minutes of stimulation, without being possible to draw conclusions about the apparent stimulation with binaural beats Beta.
Descrição
Trabalho Final do Curso de Mestrado Integrado em Medicina, Faculdade de Medicina, Universidade de Lisboa, 2016
Palavras-chave
Binaural beats Beta Teta Sistema nervoso autónomo