MATLAB: What is the unit of values calculated from spectrogram when I used EEG microvolts as a input

Question

Hi All.

I have some results of EEG spectrogram, but I'm not sure what the units of values from spectrogram is. I just used raw EEG time series values which were measured as microvolts.

The used raw EEG data's sampling rate is 100 and the size of window is 200. I did not conduct any preprocessing step.

[S, F, T] = spectrogram(X,200,190,1024,100);

Then, is the values of S same with the raw EEG input data, microvolts?

Thank you.

Answer 1

http://stackoverflow.com/questions/1523814/units-of-a-fourier-transform-fft-when-doing-spectral-analysis-of-a-signal