<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Mehmet,<div><br></div><div>I'm sure there are many ways to do this, but one way would be to use the template MRI data from SPM8, co-registering your MEG data with it, and then using the fieldtrip functions to do the ECD analysis, either within SPM or directly in fieldtrip. We've done this many times (and with the same MEG system). I'm happy to provide a few code snippets to you if you are interested in this approach.</div><div><br></div><div>Best,</div><div><br></div><div>Don Rojas</div><div><br><div><div>On Mar 16, 2011, at 4:26 PM, Mehmet-Akif Coskun wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><font class="Apple-style-span" face="Times">Dear FieldTrippers;<br></font><br><br><font class="Apple-style-span" face="Times"><br></font><br><font class="Apple-style-span" face="Times">I recently start using fieldtrip and so please tolerate if these issues are straightforward.</font><br><font class="Apple-style-span" face="Times"><br>i need to fit dipoles to M50 and M100 component of my ERPs and get the dipole time course (and also i will need the leadfields because i want to project leadfields of one source to another ERP).<br>I don't have any MR data. All i have is the raw data, config and hsfiles ( I am using a 248 4D MEG system). I have been told that without any MR, i can still do this in fieldtrip.<br>I tried using ft_dipolefitting and but since i don't have any volume conduction model, it doesnt work.<br><br></font><br><font class="Apple-style-span" face="Times">So i wonder if there are any predefined models. If not, are there any functions to use to create a model from what i have? <br><br></font><br><font class="Apple-style-span" face="Times">Any help will be greatly appreciated and t</font><span class="Apple-style-span" style="font-family: Times; ">hanks all for your interest</span><br><font class="Apple-style-span" face="Times">Mehmet</font>
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