A friend mentioned that blinking and forehead movements are a big issue in EEG setups, and much care needs to be taken to remove such signals in order to see "true" brain activity. The fact that I see some sort of signal coming from the NeuroSky MindWave Mobile when it is hooked up to my hand is unsettling to me, and causes me to be skeptical of what I see when this device is hooked up to my head.
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