Abstract
In this study, we propose an approach to identify individuality that appears in human brain dynamics and visualize inter-individual variations in a low-dimensional space. For this purpose, we first introduce an appropriate similarity measure between multichannel electroencephalography (EEG) signals based on information geometry. Then, we use t-distributed stochastic neighbor embedding, which is a state-of-the-art algorithm for manifold learning, and combine it with the information distance to map points in the high-dimensional EEG signal space into two-dimensional space. We show that a fine low-dimensional visualization enables us to identify each subject as an isolated island of points and preserve inter-individual variations. We also provide an appropriate approach to tune the cost function parameter.
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Acknowledgements
This study was supported by “Actualize Energetic Life by Creating Brain Information Industries,” ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan).
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Suetani, H., Mizuno, Y., Kitajo, K. (2018). A Manifold Learning Approach to Chart Human Brain Dynamics Using Resting EEG Signals. In: Morales, A., Gershenson, C., Braha, D., Minai, A., Bar-Yam, Y. (eds) Unifying Themes in Complex Systems IX. ICCS 2018. Springer Proceedings in Complexity. Springer, Cham. https://doi.org/10.1007/978-3-319-96661-8_37
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DOI: https://doi.org/10.1007/978-3-319-96661-8_37
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