[Eeglablist] newtimef frequency limits - question.

[Makoto Miyakoshi]

Dear Natan,

If you go down to 1 Hz with 3 cycles, then your window length will be
longer than 3 second. It'll make huge difference in the output. You should
see much narrower time window when you use 1-50 Hz condition, which should
explain at least one of the reasons why you received a very different
impression. If you find a difference other than this (oh, it'll change the
cycles too; you should have 3 times (?) more cycles around 50 Hz and the
plot should look horizontally stretched...) and you need an explanation let
me know.

Makoto


2013/10/20 Natan Napiórkowski <natan.napiorkowski at gmail.com>

>  Hi!
>
>     Recently I was using 'newtimef' function to compute significant
> differences between two groups. I set frequency to 5-45 Hz, and got fine
> results.
> But after that I changed limits (nothing more) to 1-50 Hz all results were
> all different! Could someone give a hint why is that? I understand the
> option 'freqs' does something more than 'ylimit', but what?
>
> Thank you for help!
>
> Best regards!
> Nathan
>
>
>
>
> P.S.
>  This is the function I use:
>
> [ersp, it, powbase, times, freqs, erspboot,itcboot] = newtimef(
> (EEG_group1.data(channel,:), EEG_group2.data(channel,:) ), ...
>     EEG_group1.pnts, [EEG_group1.xmin, EEG_group1.xmax]*1000,
> EEG.group1.srate, ...
>     'cycles', [3, 0.5], 'plotitc','off', 'plotersp', 'on', *'freqs', [5
> 45],* 'scale', 'log', 'alpha', 0.05);
>
>
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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