# LCMV on raw data **URL:** \ **Category:** Mailing List Archive (read-only)\ **Tags:** list-archive\ **Created:** [May 15, 2018, 11:54am UTC](https://mne.discourse.group/t/lcmv-on-raw-data/1522 "2018-05-15T11:54:05Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [May 15, 2018, 11:54am UTC](https://mne.discourse.group/t/lcmv-on-raw-data/1522/1 "2018-05-15T11:54:05Z")
External Email - Use Caution Hi! I hope my question is understandable... If one applies lcmv beamformer on raw data continous data (50 minutes of registration) and chooses pick\_ori='max\_power', will the output be a spatial filter of the maximum power source at each time point? That is, will the spatial filter "move" across the cortex if the cortical source of maximal power changes? Karin -------------- next part -------------- An HTML attachment was scrubbed... URL: [http://mail.nmr.mgh.harvard.edu/pipermail/mne\_analysis/attachments/20180515/0f7633e3/attachment.html](http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20180515/0f7633e3/attachment.html) ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [May 15, 2018, 4:30pm UTC](https://mne.discourse.group/t/lcmv-on-raw-data/1522/2 "2018-05-15T16:30:23Z")
Hi Karin, pick\_ori=?max\_power? does not find the source point with maximum power, but for each source point, the \*orientation\* of maximum power. See this tutorial for more information about what I mean with the ?orientation? of a source: [https://www.martinos.org/mne/stable/auto\_tutorials/plot\_dipole\_orientations.html](https://www.martinos.org/mne/stable/auto_tutorials/plot_dipole_orientations.html) The LCMV beamformer, applied to continuous data, will for each time point create a full source estimate for all source points along the cortex. So yes, you?ll be able to see the location of maximum power ?move? along the cortex. Hope that helps! Marijn. >         External Email - Use Caution > > Hi! > > I hope my question is understandable... > > If one applies lcmv beamformer on raw data continous data (50 minutes of registration) and chooses pick\_ori='max\_power', will the output be a spatial filter of the maximum power source at each time point? That is, will the spatial filter "move" across the cortex if the cortical source of maximal power changes? > > Karin > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > Mne\_analysis mailing list > Mne\_analysis at nmr.mgh.harvard.edu > [Mne\_analysis Info Page](https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis) > > The information in this e-mail is intended only for the person to whom it is > addressed. If you believe this e-mail was sent to you in error and the e-mail > contains patient information, please contact the Partners Compliance HelpLine at > [MyComplianceReport.com: Compliance and Ethics Reporting](http://www.partners.org/complianceline) . If the e-mail was sent to you in error > but does not contain patient information, please contact the sender and properly > dispose of the e-mail. -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 1386 bytes Desc: not available Url : [http://mail.nmr.mgh.harvard.edu/pipermail/mne\_analysis/attachments/20180515/05a612d9/attachment.bin](http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20180515/05a612d9/attachment.bin) -------------- next part --------------         External Email - Use Caution -------------- next part -------------- An HTML attachment was scrubbed... URL: [http://mail.nmr.mgh.harvard.edu/pipermail/mne\_analysis/attachments/20180515/05a612d9/attachment.html](http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20180515/05a612d9/attachment.html) ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [May 17, 2018, 12:20pm UTC](https://mne.discourse.group/t/lcmv-on-raw-data/1522/3 "2018-05-17T12:20:15Z")
External Email - Use Caution Ok thank you. If one wanted to retrieve data from only one source (an epileptic source) how should you do? That is not only for epochs, but for continuous data? Karin 2018-05-15 18:30 GMT+02:00 Marijn van Vliet \: > Hi Karin, > > pick\_ori=?max\_power? does not find the source point with maximum power, > but for each source point, the \*orientation\* of maximum power. See this > tutorial for more information about what I mean with the ?orientation? of a > source: > > [https://www.martinos.org/mne/stable/auto\_tutorials/plot\_](https://www.martinos.org/mne/stable/auto_tutorials/plot_) > dipole\_orientations.html > > The LCMV beamformer, applied to continuous data, will for each time point > create a full source estimate for all source points along the cortex. So > yes, you?ll be able to see the location of maximum power ?move? along the > cortex. > > Hope that helps! > > Marijn. > > \> > \> External Email - Use Caution > \> > \> > \> Hi! > \> > \> I hope my question is understandable... > \> > \> If one applies lcmv beamformer on raw data continous data (50 minutes of > registration) and chooses pick\_ori='max\_power', will the output be a > spatial filter of the maximum power source at each time point? That is, > will the spatial filter "move" across the cortex if the cortical source of > maximal power changes? > \> > \> Karin > \> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > \> Mne\_analysis mailing list > \> Mne\_analysis at nmr.mgh.harvard.edu > \> [Mne\_analysis Info Page](https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis) > \> > \> > \> The information in this e-mail is intended only for the person to whom > it is > \> addressed. If you believe this e-mail was sent to you in error and the > e-mail > \> contains patient information, please contact the Partners Compliance > HelpLine at > \> [MyComplianceReport.com: Compliance and Ethics Reporting](http://www.partners.org/complianceline) . If the e-mail was sent to you > in error > \> but does not contain patient information, please contact the sender and > properly > \> dispose of the e-mail. > >         External Email - Use Caution > > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > Mne\_analysis mailing list > Mne\_analysis at nmr.mgh.harvard.edu > [Mne\_analysis Info Page](https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis) > > The information in this e-mail is intended only for the person to whom it > is > addressed. If you believe this e-mail was sent to you in error and the > e-mail > contains patient information, please contact the Partners Compliance > HelpLine at > [MyComplianceReport.com: Compliance and Ethics Reporting](http://www.partners.org/complianceline) . If the e-mail was sent to you in > error > but does not contain patient information, please contact the sender and > properly > dispose of the e-mail. -------------- next part -------------- An HTML attachment was scrubbed... URL: [http://mail.nmr.mgh.harvard.edu/pipermail/mne\_analysis/attachments/20180517/7cb4020a/attachment.html](http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20180517/7cb4020a/attachment.html) ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [May 17, 2018, 3:39pm UTC](https://mne.discourse.group/t/lcmv-on-raw-data/1522/4 "2018-05-17T15:39:33Z")
External Email - Use Caution Hi, Anyone can help me to import .avg file from event related potential dataset ? Thanks ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [May 17, 2018, 6:28pm UTC](https://mne.discourse.group/t/lcmv-on-raw-data/1522/5 "2018-05-17T18:28:06Z")
Would it work if you just picked the source with maximum power? (computed for a sliding window across time) >         External Email - Use Caution > > Ok thank you. If one wanted to retrieve data from only one source (an epileptic source) how should you do? That is not only for epochs, but for continuous data? > > Karin > > 2018-05-15 18:30 GMT+02:00 Marijn van Vliet \: > Hi Karin, > > pick\_ori=?max\_power? does not find the source point with maximum power, but for each source point, the \*orientation\* of maximum power. See this tutorial for more information about what I mean with the ?orientation? of a source: > > [https://www.martinos.org/mne/stable/auto\_tutorials/plot\_dipole\_orientations.html](https://www.martinos.org/mne/stable/auto_tutorials/plot_dipole_orientations.html) > > The LCMV beamformer, applied to continuous data, will for each time point create a full source estimate for all source points along the cortex. So yes, you?ll be able to see the location of maximum power ?move? along the cortex. > > Hope that helps! > > Marijn. > > \> > \> External Email - Use Caution > \> > \> > \> Hi! > \> > \> I hope my question is understandable... > \> > \> If one applies lcmv beamformer on raw data continous data (50 minutes of registration) and chooses pick\_ori='max\_power', will the output be a spatial filter of the maximum power source at each time point? That is, will the spatial filter "move" across the cortex if the cortical source of maximal power changes? > \> > \> Karin > \> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > \> Mne\_analysis mailing list > \> Mne\_analysis at nmr.mgh.harvard.edu > \> [Mne\_analysis Info Page](https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis) > \> > \> > \> The information in this e-mail is intended only for the person to whom it is > \> addressed. If you believe this e-mail was sent to you in error and the e-mail > \> contains patient information, please contact the Partners Compliance HelpLine at > \> [MyComplianceReport.com: Compliance and Ethics Reporting](http://www.partners.org/complianceline) . If the e-mail was sent to you in error > \> but does not contain patient information, please contact the sender and properly > \> dispose of the e-mail. > >         External Email - Use Caution > > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > Mne\_analysis mailing list > Mne\_analysis at nmr.mgh.harvard.edu > [Mne\_analysis Info Page](https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis) > > The information in this e-mail is intended only for the person to whom it is > addressed. If you believe this e-mail was sent to you in error and the e-mail > contains patient information, please contact the Partners Compliance HelpLine at > [MyComplianceReport.com: Compliance and Ethics Reporting](http://www.partners.org/complianceline) . If the e-mail was sent to you in error > but does not contain patient information, please contact the sender and properly > dispose of the e-mail. > > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > Mne\_analysis mailing list > Mne\_analysis at nmr.mgh.harvard.edu > [Mne\_analysis Info Page](https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis) > > The information in this e-mail is intended only for the person to whom it is > addressed. If you believe this e-mail was sent to you in error and the e-mail > contains patient information, please contact the Partners Compliance HelpLine at > [MyComplianceReport.com: Compliance and Ethics Reporting](http://www.partners.org/complianceline) . If the e-mail was sent to you in error > but does not contain patient information, please contact the sender and properly > dispose of the e-mail. -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 1386 bytes Desc: not available Url : [http://mail.nmr.mgh.harvard.edu/pipermail/mne\_analysis/attachments/20180517/5750b4dc/attachment.bin](http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20180517/5750b4dc/attachment.bin) -------------- next part --------------         External Email - Use Caution -------------- next part -------------- An HTML attachment was scrubbed... URL: [http://mail.nmr.mgh.harvard.edu/pipermail/mne\_analysis/attachments/20180517/5750b4dc/attachment.html](http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20180517/5750b4dc/attachment.html) ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [May 17, 2018, 7:40pm UTC](https://mne.discourse.group/t/lcmv-on-raw-data/1522/6 "2018-05-17T19:40:07Z")
External Email - Use Caution But then the you would only pick the ?right? source when there were epileptic spikes? And not get the background activity in between spikes? Karin Skickat fr?n min iPhone