Hello i think what you obtain is the best fitting dipoles for every component in the entire time interval; that is, only one solution for the entire interval. Even though you have the same number of components and electrodes, you probably want to fit only those that explain more than 90% of the variance in the data. If I am not wrong, dipole models solutions always give you a limited number of sources (max = number of electrodes). If you want to obtain more sources you may consider a distributed model for the inverse solution. For a discussion about different solutions, see Michel et al. (2004). EEG source imaging. Clinical Neurophisiology, 115.<br>
<br>I believe that the spherical settings can be modified in 'Head model and settings', selecting the 'custom model files' option as a model.<br><br>hope this helps,<br><br>Antonio<br><br><div class="gmail_quote">
2010/8/10 ludwing torres <span dir="ltr"><<a href="mailto:lutobu@gmail.com">lutobu@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hello. Im trying to perform a source reconstruction from a 10-20 system of 19 channel locations, after I perform ICA, I go for dipole fitting using dipfit, and I obtain exactly the same number of dipoles than the number of channels, and I only get the positions at a single time moment.<br>
<br>My question is: How can I get the source reconstruction of the dipoles in the entire timecourse of the signals of the channels, and why I am obtaining the same number of sources: isn't it supposed to be greater the number of sources than the number of scalp measures?<br>
<br>Another thing is: if I have the radius of the spherical head model, how can I use this volume and conductance configurations rather than those that already exist in eeglab?<br><br>thank you for all your replies<br>
<br>_______________________________________________<br>
Eeglablist page: <a href="http://sccn.ucsd.edu/eeglab/eeglabmail.html" target="_blank">http://sccn.ucsd.edu/eeglab/eeglabmail.html</a><br>
To unsubscribe, send an empty email to <a href="mailto:eeglablist-unsubscribe@sccn.ucsd.edu">eeglablist-unsubscribe@sccn.ucsd.edu</a><br>
For digest mode, send an email with the subject "set digest mime" to <a href="mailto:eeglablist-request@sccn.ucsd.edu">eeglablist-request@sccn.ucsd.edu</a><br></blockquote></div><br>