Interpretation of EEG PSD values


#1

Hi there everybody,

I have a question about the EEG PSD values. These values as read from the sensor are commonly in the {-1:+1} range and I’m not sure about the results.
My question is tha, for example in case of concentration, if the value is close -1 is because the person isn’t concentrate or is because the person is very concentrate?

Thanks!