The MindFlex consumer EEG device serves as a perfect prototyping solution to begin working with EEG data. The device contains the Neurosky TGAM1 board which can be reprogrammed to send raw waveform data at a high baud rate of 57.6k equating to approximately 512 packets of data per second (or 1 packet every 2 milliseconds.) This is achieved by either desoldering a resistor on the board, or sending a command byte via serial.
The default configuration mode of the MindFlex device is set to is 9600 Baud without Raw Output, which is unsuitable for measurement purposes. I used an HC-05 Bluetooth module soldered to the TX and RX (Send & Receive) pins of the TGAM1 board to hijack the signal so I can send and receive packets in MAXMSP.
The MindFlex device is uses a monopolar montage EEG collection system, referencing a single dry electrode with two common reference electrodes attached to the earlobes. This is in contrast to bipolar montage collection which references two active scalp sites, commonly using a wet electrode system.
The results of the NeuroSky device have been tested and are comparable to Biopac wet electrode medical grade data acquisition devices used in research that has been published in peer reviewed journals, making it a suitable prototyping solution.
I've started some basic preliminary research of brainwave entrainment using binaural beats. I'm also looking into Isochronic Tones as per Darrin's suggestion.
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