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<p class="MsoNormal">In on of the source analysis modules, likely for the simbio lead field computation, I get the message below about pruning elements of the head model. Does anyone know what this means? I don’t think I have seen it before.
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">John <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">creating sourcemodel based on user specified 3D grid<o:p></o:p></p>
<p class="MsoNormal">using electrodes specified in the configuration<o:p></o:p></p>
<p class="MsoNormal">selecting dipole positions inside the 'gm' tissue<o:p></o:p></p>
<p class="MsoNormal">pruning headmodel volume elements from 1572480 to 450494 (29%)<o:p></o:p></p>
<p class="MsoNormal">pruning headmodel vertices from 262013 to 159509 (61%)<o:p></o:p></p>
<p class="MsoNormal">pruning dipole positions from 1887681 to 1759824 (93%)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This is in the ft_inside_headmodel, both inverse and forward<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">./inverse/private/ft_inside_headmodel.m: fprintf('pruning headmodel volume elements from %d to %d (%d%%)\n', numhex, sum(insidehex), round(100*sum(insidehex)/numhex));<o:p></o:p></p>
<p class="MsoNormal">./inverse/private/ft_inside_headmodel.m: fprintf('pruning headmodel vertices from %d to %d (%d%%)\n', numpos, sum(insidepos), round(100*sum(insidepos)/numpos));<o:p></o:p></p>
<p class="MsoNormal">./inverse/private/ft_inside_headmodel.m: fprintf('pruning dipole positions from %d to %d (%d%%)\n', numdip, sum(insidedip), round(100*sum(insidedip)/numdip));<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">./forward/ft_inside_headmodel.m: fprintf('pruning headmodel volume elements from %d to %d (%d%%)\n', numhex, sum(insidehex), round(100*sum(insidehex)/numhex));<o:p></o:p></p>
<p class="MsoNormal">./forward/ft_inside_headmodel.m: fprintf('pruning headmodel vertices from %d to %d (%d%%)\n', numpos, sum(insidepos), round(100*sum(insidepos)/numpos));<o:p></o:p></p>
<p class="MsoNormal">./forward/ft_inside_headmodel.m: fprintf('pruning dipole positions from %d to %d (%d%%)\n', numdip, sum(insidedip), round(100*sum(insidedip)/numdip));<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:Consolas;color:black;mso-ligatures:none">***********************************************<br>
John E. Richards<br>
Carolina Distinguished Professor<br>
Department of Psychology<br>
University of South Carolina<br>
Columbia, SC 29208<br>
Dept Phone: 803 777 2079<br>
Fax: 803 777 9558<br>
Email: </span><span style="color:#1F497D;mso-ligatures:none"><a href="mailto:richards-john@sc.edu"><span style="font-size:10.0pt;font-family:Consolas;color:#0563C1">richards-john@sc.edu</span></a></span><u><span style="font-size:10.0pt;font-family:Consolas;color:blue;mso-ligatures:none"><br>
</span></u><span style="font-size:10.0pt;font-family:Consolas;color:black;mso-ligatures:none"><a href="https://urldefense.com/v3/__https://jerlab.sc.edu__;!!HJOPV4FYYWzcc1jazlU!-J1ZRygBFwHfm02-qbAb5IRd5vZq6CUPGnlnoLEy8Y7Ar0w4fUhpC1FPgOompIoyFW2guQl_5gKtR0mQnk8D-BQRrlgo$"><span style="color:#0563C1">https://jerlab.sc.edu</span></a><br>
***********************************************<br>
<br>
</span><span style="mso-ligatures:none"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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