[Eeglablist] changes in spectopo?

[Wambua Kazi]

Dear esteemed colleagues,
    I am trying the estimate the mean EEG spectra of epoched data.  I
addition to an FFT, there are at least two methods implemented in Matlab for
this purpose: [1] pwelch.m (Welch's method, EEGLAB uses this) and [2] pmtm.m
(Thomson's multitaper method).
    Can anyone tell me what the relative pro's and con's of the Welch and
Thomson method are for about 1-2 second epoched data (around 256-512 time
points)?
            thank you for your time,
                     -Wambua
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