PERSONAL COMMENT
There is little doubt that gamma could be an important trigger for signaling many BCI events. However one must take into account that 98% of the power of the EEG signal is below 30 Hz. gamma account for 1 or 2 ùV and this is the hardware noise limit for a lot amplifiers. Many amplifiers even then only reach 2 ùV (inputs interconnected) output at low sampling frequency (128 Hz) and that is insufficient to study 50-80 hz range.
I wonder how the authors solved this or can we expect to see the birth of a super amplifier ?
02 mei 2009
gamma in BCI
PERSONAL COMMENT
There is little doubt that gamma could be an important trigger for signaling many BCI events. However one must take into account that 98% of the power of the EEG signal is below 30 Hz. gamma account for 1 or 2 ùV and this is the hardware noise limit for a lot amplifiers. Many amplifiers even then only reach 2 ùV (inputs interconnected) output at low sampling frequency (128 Hz) and that is insufficient to study 50-80 hz range.
I wonder how the authors solved this or can we expect to see the birth of a super amplifier ?
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