[Mne_analysis] LCMV on raw data

Karin Westin karin.westin85 at gmail.com
Thu May 17 15:40:07 EDT 2018
Search archives:

        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 från min iPhone

> 17 maj 2018 kl. 20:28 skrev Marijn van Vliet <w.m.vanvliet at gmail.com>:
> 
> Would it work if you just picked the source with maximum power? (computed for a sliding window across time)
> 
>> On 17 May 2018, at 15:20, Karin Westin <karin.westin85 at gmail.com> wrote:
>> 
>>        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 <w.m.vanvliet at gmail.com>:
>> 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
>> 
>> 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.
>> 
>>> On 15 May 2018, at 14:54, Karin Westin <karin.westin85 at gmail.com> wrote:
>>> 
>>>        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
>>> 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
>>> 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
>> 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
>> 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
>> 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
>> 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.
> 



More information about the Mne_analysis mailing list