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Musicality of Human Brain through Fractal Analytics pp 103–116Cite as

Tanpura Drone and Brain Response

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Abstract

Electroencephalography (EEG) was performed on 10 participants using a simple acoustical stimuli i.e., a Tanpura drone. The Tanpura drone is free from any semantic content and is used with a hypothesis that it provides a specific resting environment for the listeners. The EEG data was extracted for all the frontal electrodes viz. F3, F4, F7, F8, Fp1, Fp2 and Fz. Empirical Mode Decomposition (EMD) is applied on the acquired raw EEG signal to make it noise free as far as possible. Wavelet Transform (WT) technique was used to segregate alpha and theta brain rhythms from the denoised EEG signal. Non linear analysis in the form of Multifractal Detrended Fluctuation Analysis (MFDFA) was carried out on the extracted alpha and theta time series data to study the variation of their complexity. It was found that in all the frontal electrodes alpha as well as theta complexity increases as is evident from the increase of multifractal spectral width. This study is entirely new and gives interesting data regarding neural activation of the alpha and theta brain rhythms while listening to simple acoustical stimuli. The importance of this study lies in the context of finding a baseline for human emotion quantification using multifractal spectral width as a parameter as well as in the field of cognitive music therapy.

Simplicity is the ultimate sophistication

—Leonardo da Vinci

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Acknowledgements

The authors gratefully acknowledge ‘Chaos, Solitons and Fractals’ journal and Elsevier Publishing Co. for providing the copyrights of Figs. 5.1, 5.3, 5.4, 5.5, 5.6 and Table 5.1 used in this Chapter.

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Authors and Affiliations

  1. Sir C.V. Raman Centre for Physics and Music, Jadavpur University, Kolkata, West Bengal, India

    Dipak Ghosh

  2. Sir C.V. Raman Centre for Physics and Music, Jadavpur University, Kolkata, West Bengal, India

    Ranjan Sengupta

  3. Sir C.V. Raman Centre for Physics and Music, Jadavpur University, Kolkata, West Bengal, India

    Shankha Sanyal

  4. Sir C.V. Raman Centre for Physics and Music, Jadavpur University, Kolkata, West Bengal, India

    Archi Banerjee

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  1. Dipak Ghosh
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Ghosh, D., Sengupta, R., Sanyal, S., Banerjee, A. (2018). Tanpura Drone and Brain Response. In: Musicality of Human Brain through Fractal Analytics. Signals and Communication Technology. Springer, Singapore. https://doi.org/10.1007/978-981-10-6511-8_5

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  • DOI: https://doi.org/10.1007/978-981-10-6511-8_5

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