[Eeglablist] question for overlapping in Spectopo()

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Wed Aug 5 10:03:59 PDT 2015

Dear Arno,

>  'overlap'  = [integer] window overlap in data points {default: 0}

Does this mean by default there is not overlap in spectopo()? I guess it
uses windowing function. Windowing with no overlap?


On Wed, Aug 5, 2015 at 3:10 AM, #SHAN XIN# <SHAN0055 at e.ntu.edu.sg> wrote:

> Dear Makoto,
> There were some discussions  in archives about overlapping for Spectopo(),
> but no confirmation was reached. So I hope to ask this again:
> The pwelch() function in Matlab has a default overlapping of 50%.
> But Spectopo(), which uses pwelch() function, has the following
> description in help file:
>     'overlap'  = [integer] window overlap in data points {default: 0}
> So in the end do we need to pass the overlap value pair to Spectopo()?
> Thank you!
> Shan Xin

Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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