I want to use ADS1299 to get the intracranial EEG,but I am confued with the electodes connection. I use +/-2.5V for the AVDD and AVSS of ADS1299, and the input is differential. For example, I want to record the signal between the IN1P and IN1N, but how to remove the commom mode level of channel IN1? I power the BIAS Amp with internal (AVDD+AVSS)/2, and set BIAS_SENSP[0] and BIAS_SENSN[0] to 1, MUX1[2:0]=000, and R and C between the BIASOUT and BIASINV , and BIASOUT directly fed to BIASIN. and next what should I do , and how to put the BIAS electrode?
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