<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear Mikel,<div><br></div><div>I understand that you should do a mtmfft with a center frequency of interest (in your case cfg.foil = [11 11]) and then you do a frequency smoothing of 3 Hz (cfg.tapsmofrq = 3). Of course you need a time window big enough to allow such a smoothing. The CSD should represent a frequency window of 8 to 14 Hz then. Then you put the result of the mtmfft into the dics beamformer.</div><div><br></div><div>Best,</div><div><br></div><div>Stephan</div><div> <br><div><div>El 27/03/2012, a las 11:19, Ion Lavado escribió:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span style="">Hello, i'm having problems trying the beamformer analysis with a frequency band of interest. I would like to have for example an interval like [8 14] Hz. My concept problem is about the cfg.frequency and cfg.tapsmofrq values. (it must be a escalar, but i want a frequency band). </span><div style="">
<br></div><div style="">%FREQ ANALYSIS</div><div style=""><div>cfg = [];</div><div>cfg.method = 'mtmfft';</div><div>cfg.output = 'powandcsd';</div><div>cfg.tapsmofrq = 5;</div><div>cfg.foilim = [8 14];</div>
<div>freq_words_alpha = ft_freqanalysis(cfg, words);</div></div><div style=""><br></div><div style=""><br></div><div style="">%SOURCE ANALYSIS</div><div style=""><div>cfg = []; </div><div>cfg.frequency = 11; </div><div>
cfg.lambda=0;</div><div>cfg.method = 'dics';</div><div>cfg.coordsys = 'neuromag';</div><div>cfg.projectnoise = 'yes';</div><div>cfg.grad = freq_words_alpha.grad;</div><div>cfg.channel = {'MEG'}; </div>
<div>cfg.grid = grid; </div><div>cfg.reducerank = 2;</div><div>cfg.vol = vol02;</div><div>vol02=ft_convert_units(vol02,'cm');</div><div>source_pre11 = ft_sourceanalysis(cfg, freq_words_alpha );</div>
</div><div style=""><br></div><div style=""><br></div><div style="">I use a cfg.frequency of 11 but i don't have really clear what i'm doing as a get the same result using cfg.frequency=11 but a freqanalysis in [10 12]. I would be very grateful if someone could solve my doubt.</div>
<div style=""><br></div><div style="">Best wishes,</div><div style=""><br></div><div style="">Mikel</div>
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<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div><br class="Apple-interchange-newline">________________________________________________________</div><div>Stephan Moratti, PhD<br><br></div><div>see also: <a href="http://web.me.com/smoratti/">http://web.me.com/smoratti/</a><br><br></div><div>Universidad Complutense de Madrid</div><div>Facultad de Psicología</div><div>Departamento de Psicología Básica I</div><div>Campus de Somosaguas</div><div>28223 Pozuelo de Alarcón (Madrid)</div><div>Spain</div><div><br></div><div>and</div><div><br></div><div>Center for Biomedical Technology</div><div>Laboratory for Cognitive and Computational Neuroscience</div><div>Parque Científico y Tecnológico de la Universidad Politecnica de Madrid<br>Campus Montegancedo</div><div>28223 Pozuelo de Alarcón (Madrid)</div><div>Spain<br><br><br>email: <a href="mailto:smoratti@psi.ucm.es">smoratti@psi.ucm.es</a><br>Tel.: +34 679219982<br><br></div></span></div></span></div></span></div></span></div>
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