Plotting EEG 36 channel data using code

I have 296500*36 data in matlab for EEG signal. I want to plot it and then do the Power Spectral density using welch for 30 second windows. Sampling frequency is 250 Hz. I would appreciate it if someone can help. Thank you.

Answer 1

[Ajay Pattassery]

You can use pwelch for finding the power spectral density of the signal.

For example,

pwelch(x,250*30, [],[],250);

where x is the input signal, 250*30 is the window length and 250 is the sampling frequency.

Refer the following link for more details about pwelch.