Abstract
The recording of high-frequency oscillations (HFO) through the skull has been investigated in the last years highlighting interesting new correlations between the EEG signals and common mental diseases. Therefore, since most of the commercially available EEG acquisition systems are focused on the low frequency signals, a wide-band EEG recorder is here presented. The proposed system is designed for those applications in which a wearable and user-friendly device is required. Using a standard Bluetooth (BT) module to transfers the acquired signals to a remote back-end, it can be easily interfaced with the nowadays widely spread smartphones or tablets by means of a mobile-based application. A Component Off-The-Shelf (COTS) device was designed on a \(19\,\text {cm}^{2}\) custom PCB with a low-power 8-channel acquisition module and a \(24-bit\) Analog to Digital Converter (ADC). The presented system, validated through in-vivo experiments, allows EEG signals recording at different sample rates, with a maximum bandwidth of \(524\,\text {Hz}\), and exhibits a maximum power consumption of 270 mW.
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Acknowledgements
The authors would like to thank Dr. Matteo Fraschini and Matteo Demuru from the University of Cagliari for their support on EEG recording in-vivo experiments. L. Bisoni gratefully acknowledges Sardinia Regional Government for the financial support of his PhD scholarship (P.O.R. Sardegna F.S.E. Operational Programme of the Autonomous Region of Sardinia, European Social Fund 2007-2013 - Axis IV Human Resources, Objective l.3, Line of Activity l.3.1.).
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Bisoni, L., Mastinu, E., Barbaro, M. (2015). A Wearable Device for High-Frequency EEG Signal Recording. In: Fred, A., Gamboa, H., Elias, D. (eds) Biomedical Engineering Systems and Technologies. BIOSTEC 2015. Communications in Computer and Information Science, vol 574. Springer, Cham. https://doi.org/10.1007/978-3-319-27707-3_5
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DOI: https://doi.org/10.1007/978-3-319-27707-3_5
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