[Eeglablist] Minimum number of Trials for ERSP Analysis

[Makoto Miyakoshi]

Dear Gozde,

I would say 20.

Makoto

On Tue, Dec 6, 2016 at 11:05 PM, Gozde BAYER <gbayer at hacettepe.edu.tr>
wrote:

>
> Dear EEGLAB List,
>
> I have been trying to design an experiment with many different types of
> visual stimuli (e.g. 8 different video types) from which I plan to get some
> specific frequency responses, for example getting band power of beta
> frequency within a specific time window. I know that I need several
> repetition of each video type so that there will be many trials to get an
> ERSP analysis,say for each subject...But since I have already 8 video types
> and if I repeat each video 10 times for example, it will end up with 80
> videos in total. From my previous experience, subjects undergoing long
> visual stimuli may get bored and lose attention very easily.
> My question is: what should be the "minumum number of trials" to get a
> reasonable/valid ERSP analysis ? I think the higher the better but in my
> case this means lots of video stimulations which becomes impractical..If
> the repetition of each video is 12 then 8x12=96 videos in total. Then
> should I rely on such trial numbers (n=10,11,12..)  while calculating ERSP ?
> So far, I have been unable to find a paper on this issue..
>
> I would appreciate any help,
> Thank you vey much.
>
> Gözde BAYER
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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