[Eeglablist] Spectrum with good frequency resolution for short time windows?

[Christian Scharinger]

Hi there,

I want to calculate a spectrum  for a rather short time window (500 ms
or less). But nevertheless I want to have a good frequency resolution
(0.5 Hz or better).

My first idea was to concatenate several of this short time windows and
then run a FFT over the resulting larger time window. But I guess this
approach could be problematic?

My second idea was to use an AR-model instead of FFT to calculate the
spectral power. This works quite well. But the problem here is how to
(re-)integrate this AR-spectrum that I calculated "outside" eeglab later 
in an eeglab study design.
Is there any possibility to replace the spectra that are calculated in 
eeglab with AR-spectra?

Maybe someone has any suggestions or ideas for this problem or maybe a
completely different (better) solution?

Many thanks in advance,

Christian

-- 
Christian Scharinger, M.A.

Knowledge Media Research Center (KMRC)
Tuebingen