[Eeglablist] Question on how to check amplitude of each channel over specific time span in eeglab

[Dongyang Yan]

Dear all,

This is a mail for kindly asking about how to calculate the mean
amplitude value
of each channel over a specific time span (e.g., 140ms-250ms, aka., N170).
I've tried to use



*baseline = -150;window = [140 250];mean_amplitude = mean( erp( :,
(window(1)-baseline):(window(2)-baseline)), 2 );*

But it doesn't work. Would you help on this? Thank you so much. Look
forward to hearing from you.

Best regards,
Dongyang Yan