<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Hi,<br></div><div>Thank you fo developping SimNibs software !<br>I have a newbie question about tACS (I already did tDCS simulations and experiments).<br>First, I use Neuroelectrics (NE) device and, with their software, I have the possibility to have several "input" electrodes with different phases and only one return electrode if needed.<br>In Simnibs, the GUI is designed fo tDCS but I understood that the results can be extrapolated to tACS for low frequencies (that's our case : around 10 Hz).<br data-mce-bogus="1"></div><div>So the question is : if I am happy with the result of a 2 + 1 montage by using CP3 and P5 (at -1 mA) and P1 (at +2mA) with PI electrodes in a tDCS perspective...how to translate this in terms of tACS parameters ?<br>For example, can I manage this with phase difference but with same amplitude or half ? What is exactly the role of return electrodes in tACS ?<br>Thanks in advance,<br></div><div>Laurent<span style="font-size:10pt"></span></div></div></body></html>