<html><body><div style="font-family: sans serif; font-size: 12pt; color: #000000"><div>Hello,</div><div><br></div><div>I'm trying to model <span style="color: #000000; font-family: 'sans serif'; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;" data-mce-style="color: #000000; font-family: 'sans serif'; font-size: 16px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">helmoltz-like </span>coil (A-field) in matlab and then transfer it to simnibs in the form of a compressed Nifti file.</div><div><br></div><div>I did a discretization 2.5 mm as suggested in the "Deng_Brain_Stim_2013" document (attached). My questions are the following:</div><div><br></div><div>1) The A-field is calculated with a electric current equal to 1A?</div><div>2) In the simnibs program, where is the origin coordinate with respect to the brain?</div><div><br></div><div>My magnetic exposure is a helmoltz-like coil, stimulating the entire brain, but it seems that in my simnibs simulation, I am doing something wrong given that the simulated induced E-field is localized in Cz.</div><div> <img src="cid:5aff7f207c041b8932c68e15e89fe3f06992af77@zimbra" data-mce-src="cid:5aff7f207c041b8932c68e15e89fe3f06992af77@zimbra" width="382" height="272"><img src="cid:ca6d2de6dbe7d43bf86240d5b90d6f0400d9e175@zimbra" width="241" height="268" data-mce-src="cid:ca6d2de6dbe7d43bf86240d5b90d6f0400d9e175@zimbra"></div><div>Thank you for your help.</div><div>Andres </div></div></body></html>