[Mne_analysis] single-layer BEM model for EEG

[dgw]

Hi Le,

You can create decent BEM models from a single MEFLASH at 5 degrees
(some users have even reported good results from a single echo). Which
would save you half the time.

HTH
D

On Thu, Oct 23, 2014 at 2:18 PM, Le Wang <lwang at bu.edu> wrote:
> Hi, Alex,
>
> Thank you very much for the confirmation. I will try to get a 3-layer model
> from just the MPRAGE (no FLASH for future subjects due to time constraints).
>
> Best
> Le
>
> On Thu, Oct 23, 2014 at 3:33 AM, Alexandre Gramfort
> <alexandre.gramfort at telecom-paristech.fr> wrote:
>>
>> hi Le,
>>
>> indeed you cannot use a homogeneous model in EEG forward calculations.
>>
>> it is not supported.
>>
>> Best,
>> Alex
>>
>>
>> On Wed, Oct 22, 2014 at 11:11 PM, Le Wang <lwang at bu.edu> wrote:
>> > Hi,
>> >
>> > Would it be possible to calculate an EEG forward solution with
>> > single-layer
>> > BEM in MNE?
>> >
>> > I know it's generally a bad idea. I just want to see how bad the source
>> > localization is with the single-layer BEM.
>> >
>> > I have the MRI scans (Flash5 and Flash30) and the 3-layer BEM for the
>> > subject. The source localization of auditory N1 works great with the
>> > 3-layer
>> > BEM. I generated a single-layer BEM and tried to use it to compute a
>> > forward
>> > solution, but MNE do_forward_solution returned with error.
>> >
>> > Thanks!
>> >
>> > Best
>> > Le
>> >
>> > ---
>> > Le Wang, Ph.D.
>> > Boston University
>> > Boston, MA, 02215
>> >
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