<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear Julia,<div><br></div><div>if you use the 'psd' option of the std_spec function, it will uses the spectopo function to compute spectrum which itself uses the Welch method. You can add any parameters that this function uses to std_spec and it will be passed on to spectopo. In your case, you might want to use the "overlap" parameter. I have clarified the help message of the std_spec function.</div><div><br></div><div>Hope this helps,</div><div><br></div><div>Arno</div><div><br><div><div>On Mar 4, 2014, at 7:24 PM, Makoto Miyakoshi <<a href="mailto:mmiyakoshi@ucsd.edu">mmiyakoshi@ucsd.edu</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><div dir="ltr">Dear Arno,<div><br></div><div>Can we edit a taper length with pwelch?</div><div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-03-03 9:28 GMT-08:00 Julia Kam <span dir="ltr"><<a href="mailto:kamjulia@gmail.com" target="_blank">kamjulia@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello all,<div><br></div><div>I have a question concerning FFT and would greatly appreciate some guidance. I would like to implement a FFT with the following options: Hanning window, 10% taper length. </div>
<div><br></div><div>Ultimately, I will be comparing the power values between two groups. Thus far, I set up a STUDY design, and have precomputed channel measures. I've gone over many EEGLAB wiki pages but I can't seem to find any GUI options or command lines that allow me to select the aforementioned parameters when running a FFT. The only piece of relevant information I came across concerns how the default setting uses Welch's window?</div>
<div><br></div><div>Any help/directions would be much appreciated! Thank you in advance.</div><div><br><div><div>Best regards,</div><div>Julia</div>
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-- <br><div dir="ltr">Makoto Miyakoshi<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego<br></div>
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