[Eeglablist] Time-frequency resoulution for ERSP using sinusoidal wavelets

[Arnaud Delorme]

Dear Aleksandra,

Frequency resolution is controled by the 'padratio' parameters. You may also enter your own array of frequencies. Time resolution is controled by the 'ntimesout' parameters. See help newtimef for more details.

Best,

Arno

On 27 Mar 2013, at 18:19, Makoto Miyakoshi wrote:

> Dear Aleksandra,
> 
> For generating wavelet series, the current EEGLAB default uses dftfilt3(). Run this function as follows to see freqresol.
> 
> freqs   = [3 100];
> cycles = [3 0.9];
> srate   = 500;
> [wavelet,cycles,freqresol,timeresol] = dftfilt3( freqs, cycles, srate);
> 
> This dftfilt3() was written by Rey Ramirez and he did a very good job. The calculation is very clear and straightforward.
> 
> Makoto
> 
> 2013/3/26 Aleksandra Vuckovic <Aleksandra.Vuckovic at glasgow.ac.uk>
> Hi
> I suppose that this question has been already discussed, but I could not find it anywhere.
> When we calculate ERSP using sinusoidal wavelets with 3 cycles at the lowest frequency of 3Hz what is time-frequency resolution going to higher frequencies.
>  
> Could you please give me the size of first several time-frequency windows?
>  
> Many thanks,
> Aleksandra
> 
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> 
> -- 
> Makoto Miyakoshi
> JSPS Postdoctral Fellow for Research Abroad
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
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