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</o:shapelayout></xml><![endif]--></head><body lang=ES link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=gmail-msoplaintext style='margin:0cm'>Dear Colleagues,<o:p></o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>I attempted to solve volumen conduction problem for another organ rather than brain using openmeeg method. The geometry was expressed in mm. As for conductivity, the leadfield value (magnitude order 10^-5) was about 1000 times higher than expected when I introduced the tissue conductivity in siemen/metre. Then I thought that maybe I should express the conductivity in siemens/mm, and multiplied by 0.001 the tissue conductivity, curiosly the leadfield value increased 1000 times (magnitude order 10^-2). Analogly, when I multiplied by 1000 the tissue conductivity, the leadfield decreased 1000 times (magnitude order 10^-8). This phenomenon is very strange because I expected to have higher surface potential for higher tissue conductivity. The last experiment I did is that I set the tissue resistivity in ohmio.meter in tissue conductivity field, the leadfield value was in expected range. <o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>The surface potential distribution I obtained was physically interpretable, the surface potential amplitude is the unique issue that generating confusion.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>How should I set the tissue conductivity of ft_prepare_headmodel when using openmeeg method?<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards<o:p></o:p></p><p class=MsoNormal>**********************************<o:p></o:p></p><p class=MsoNormal>Yiyao Ye Lin <o:p></o:p></p><p class=MsoNormal>Universitat Politècnica de València,<o:p></o:p></p><p class=MsoNormal>Departamento de Ingeniería Electrónica, <o:p></o:p></p><p class=MsoNormal>Ed, 7F, 4 planta,<o:p></o:p></p><p class=MsoNormal>46022, València,<o:p></o:p></p><p class=MsoNormal>València, España<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p></div></body></html>