<html><head></head><body><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div><div><span><div>Hello all,</div><div><br></div><div>I have a question regarding channel locations, head radius, and DIPFIT. <br></div><div>Based on Mokoto's preprocessing because my<span> channel montage follows International 10-20 system I select '<span><span>use MNI coordinate file for BEM <g class="gr_ gr_20 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" id="20" data-gr-id="20">dipfit</g> model' and then <span><span>'Opt. head center'</span></span>. After doing these two steps the head radius (<span>Spherical Radius) changed from <span><b>89.2046</b> before <span><span><span><span><span><span>'Opt. head center'</span></span></span></span></span></span> </span>to <b>106.906 </b>after <span><span><span><span><span><span>'Opt. head center'</span></span></span></span></span></span><b>. </b></span></span></span></span><br></div><div>Then I go to DIPFIT head model and setting part, I toggle on the No Co-Reg. But my problem is about a note is written at<span> the end of this window: </span> 'For EEG, check that the channel locations are on the surface of the head model ( To do this: Set head radius to about 85 in the channel editor). <br></div><div>So, what should I do exactly now? Must I change the head radius from <b>106.906</b> to <b>85</b> again on the channel location window? <br></div><div>I would be so thankful if you could help me with this issue.</div><div><br></div>Hame</span>d<br></div><div><br></div><div class="ydp474853e1signature"><div style="font-size:13px;"><br></div></div></div></div></div></body></html>