Wireless EEG system with real time impedance monitoring and active electrodes

In this paper, we present a miniaturized (<;6cm3) and low noise (60nV/√Hz) wireless EEG sensor node with active electrodes and simultaneous electrode tissue impedance (ETI) monitoring. The added benefit of the active electrodes and continuous ETI monitoring is quantified in terms of susceptibility against power line interference and cable motion artefacts. The sensor node is benchmarked against a reference system for similarity measures in EEG frequency response in the relevant bandwidth. Applications of this prototype are foreseen in the clinical, lifestyle and entertainment domains.

[1]  Julien Penders,et al.  Low Power Wireless EEG Headset for BCI Applications , 2011, HCI.

[2]  M. Fernandez,et al.  A simple active electrode for power line interference reduction in high resolution biopotential measurements , 1996, Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

[3]  Refet Firat Yazicioglu,et al.  Ultra low power wireless ECG system with beat detection and real time impedance measurement , 2010, 2010 Biomedical Circuits and Systems Conference (BioCAS).

[4]  Refet Firat Yazicioglu,et al.  A low-power, wireless, 8-channel EEG monitoring headset , 2010, 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology.

[5]  H. Lüders,et al.  American Electroencephalographic Society Guidelines for Standard Electrode Position Nomenclature , 1991, Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society.

[6]  Refet Firat Yazicioglu,et al.  A 700µW 8-channel EEG/contact-impedance acquisition system for dry-electrodes , 2012, 2012 Symposium on VLSI Circuits (VLSIC).

[7]  A. C. MettingVanRijn,et al.  Low-cost active electrode improves the resolution in biopotential recordings , 1996, Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.