Wireless brain signal recordings based on capacitive electrodes

In this paper the development of a wireless electroencephalogram (EEG) monitoring system is presented. The system is capable of processing brain signals on-board recorded from non-contact sensors. The non-contact sensor was designed utilizing capacitive coupling as recording interface. The on-board multi-channel signal processing is performed on a tiny computer module with low power consumption, high performance embedded computing platform that can communicate via WiFi or Bluetooth. It provides an excellent option for developing a compact Brain Computer Interface (BCI) with a direct connection to the external device e. g. robot or prosthesis without employing a personal computer (PC).