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Analysis of heart rate signals during meditation using visibility graph complexity

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Abstract

In the dynamics analysis of heart rate, the complexity of visibility graphs (VGs) is seen as a sign of short term variability in signals. The present study was conducted to investigate the possible impact of meditation on heart rate signals complexity using VG method. In this study, existing heart rate signals in Physionet database were used. The dynamics of the signals were then studied both before and during meditation by examining the complexity of VGs using graph index complexity (GIC). Generally, the obtained results showed that the heart rate signals were more complex during meditation. The simple process of calculating the GIC of VG and its adaptability to the chaotic nature of the biological signals can help in estimating the heart rate complexity in meditation.

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Authors and Affiliations

  1. Department of Biomedical Engineering, Hakim Sabzevari University, Sabzevar, Iran

    Mahda Nasrolahzadeh, Zeynab Mohammadpoory & Javad Haddadnia

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  1. Mahda Nasrolahzadeh
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  2. Zeynab Mohammadpoory
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  3. Javad Haddadnia
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Correspondence to Mahda Nasrolahzadeh.

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Nasrolahzadeh, M., Mohammadpoory, Z. & Haddadnia, J. Analysis of heart rate signals during meditation using visibility graph complexity. Cogn Neurodyn 13, 45–52 (2019). https://doi.org/10.1007/s11571-018-9501-5

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  • DOI: https://doi.org/10.1007/s11571-018-9501-5

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