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Behavior of the geometric indices of heart rate variability during mental arithmetic test overload after exposure to musical auditory stimulation in men

Grant number: 13/05102-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): June 01, 2013
Effective date (End): May 31, 2015
Field of knowledge:Biological Sciences - Physiology - General Physiology
Principal researcher:Vitor Engrácia Valenti
Grantee:Anne Michelli Gomes Gonçalves Fontes
Home Institution: Faculdade de Filosofia e Ciências (FFC). Universidade Estadual Paulista (UNESP). Campus de Marília. Marília , SP, Brazil


The relationship between the auditory system and cardiovascular system is based on the incidence of hypertension in about 20% of individuals with hearing impairment. Exposure to music with strong intensities by earphones chronically contributes to the development of hearing loss. Classical music has the effect of the activation of the parasympathetic nervous system and reduction of the sympathetic nervous system. Heart rate variability (HRV) is a well-recognized method in the literature that analyzes cardiac autonomic regulation. However, it is not clear in the literature whether exposure to different types of music as well as the intensity and duration of exposure to music with the headset can affect cardiac autonomic control. Objective: To analyze the effects of musical auditory stimulation on HRV in response to the mental arithmetical test. Method: The study will be performed on young adult men 18-35 years of age. We will analyze the geometric indices (TINN, RRtri, SD1, SD2, and SD1/SD2) HRV. The evaluation protocol will be based on the record to stand for 20 minutes. In this initial period, the subject will remain with the headset off. After 20 minutes of initial registration, the individual will have 5 minutes to perform mental arithmetic exercises. Then it will be exposed to music for 10 minutes and then again to exercise mental arithmetic. The sequence of exposure to mental arithmetic exercises without music and with music is random from individual to individual. The indices of HRV are evaluated before, during, and 0-5 minutes after the autonomic test. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FONTES, ANNE M. G.; GARNER, DAVID M.; DE ABREU, LUIZ CARLOS; BARBOSA, JULIANA C.; DE ASSIS, ELISANGELA VILAR; DE SOUZA, ANA CECILIA A.; PORTO, ANDREY A.; VALENTI, VITOR E.. Global Chaotic Parameters of Heart Rate Variability During Mental Task. COMPLEXITY, v. 21, n. 5, p. 300-307, . (13/05102-6)

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