<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Martin,<div><br></div><div>take a look at <a href="http://fieldtrip.fcdonders.nl/faq/how_can_i_process_continuous_data_without_triggers">http://fieldtrip.fcdonders.nl/faq/how_can_i_process_continuous_data_without_triggers</a> </div><div>to know how to preprocess your single trial</div><div><br></div><div>Marco</div><div><br></div><div><br></div><div><div><div>On 02/lug/09, at 15:39, Martin Bleichner wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Hi there, <br><br>this might be a stupid question. I probably miss something obvious.<br><br>I want to compute the power spectrum over a single trial (around 5 minutes). <br><br>using this piece of code<br>cfg = [];<br> cfg.method = 'mtmfft';<br>cfg.output = 'pow';<br>cfg.foilim = [1 100];<br>cfg.taper = 'hanning';<br>freq = freqanalysis(cfg, data);<br><br>as a result I get <br> freq: [1x62534 double]<br>powspctrm: [96x62534 double]<br> <br>that is a frequency resolution of 0.0032Hz!? What determines the frequency resolution here? What can I do to make it less fine grained? <br><br>Thanks<br>Martin<br><br><br><p>----------------------------------</p><p>The aim of this list is to facilitate the discussion between users of the FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis.</p><p> <a href="http://listserv.surfnet.nl/archives/fieldtrip.html">http://listserv.surfnet.nl/archives/fieldtrip.html</a></p><p> <a href="http://www.ru.nl/fcdonders/fieldtrip/">http://www.ru.nl/fcdonders/fieldtrip/</a></p> </blockquote></div><br></div></body></html><p>----------------------------------</p>
<p>The aim of this list is to facilitate the discussion between users of the FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis.</p>
<p> http://listserv.surfnet.nl/archives/fieldtrip.html</p>
<p> http://www.ru.nl/fcdonders/fieldtrip/</p>