Joe -
Hee hee - good question. Karl's MSP method (in the latest
update) is not peer-reviewed yet. I am currently evaluating
it on my data, and it works well, but I would hesitate to
recommend it until it has passed peer review. It does seem
to avoid the "superficial-bias" of the basic minimum norm
method (='IID'), but the simulation results will be
critical. Hopefully these will be finished soon, if you
don't mind "watching this space".
(Note that it stands for "Multiple Sparse Priors" and is
different from Jeremie Mattout's "Multivariate Source
Prelocalisation")
Best wishes
Rik
----------------------------------------
Dr Richard Henson
MRC Cognition & Brain Sciences Unit
15 Chaucer Road
Cambridge
CB2 7EF, UK
Tel: +44 (0)1223 355 294 x522
Fax: +44 (0)1223 359 062
http://www.mrc-cbu.cam.ac.uk/~rik.henson
----------------------------------------
----- Original Message -----
From: Joseph Dien
To: [log in to unmask]
Sent: Friday, April 27, 2007 1:21 AM
Subject: Re: [SPM] EEG: 3D source reconstruction
Rik,
what is your current recommendation on the inverse
options: MSP,
LOR or IID?
Thanks!
Joe
On Apr 26, 2007, at 3:29 AM, Rik Henson wrote:
>
> Joe -
>
> If it's any help, there is a worked example (how to use
the fids
> and sensor positions) in the first links here:
>
> http://www.mrc-cbu.cam.ac.uk/~rh01/analysis.html
>
> (Once the latest updates to the inversion routines have
been tested
> and peer-reviewed, I hope to make this worked example
part of the
> manual; at the moment the "imaging" MEG/EEG inversion
code is still
> evolving.)
>
> Rik
>
> ----------------------------------------
> Dr Richard Henson
> MRC Cognition & Brain Sciences Unit
> 15 Chaucer Road
> Cambridge
> CB2 7EF, UK
>
> Tel: +44 (0)1223 355 294 x522
> Fax: +44 (0)1223 359 062
>
> http://www.mrc-cbu.cam.ac.uk/~rik.henson
> ----------------------------------------
>
> ----- Original Message -----
> From: Christophe Phillips
> To: [log in to unmask]
> Sent: Wednesday, April 25, 2007 10:12 PM
> Subject: Re: [SPM] EEG: 3D source reconstruction
>
>
> Dear Joe et al.
>
> I think I'm the one responsible for the confusing
comments about
> editing out the fiducial information...
>
> Your latest interpretation is right: get different files
with the
> different bits of information (fiducials in EEG and MRI
space,
> sensors, and headshape coordinates) and input them when
requested.
> Hopefully, the rest of the processing will run
smoothly...
>
> Best,
> Chris
>
> Joseph Dien a écrit :
>> Ah, worked it out! Sorry for this stream of
consciousness series
>> of messages. I'll stop after this note until I'm
definitely
>> stuck. Okay, the 3D reconstruction gives the choice of
either
>> using a .pol file or not. If yes then it is assumed to
have the
>> fiducials listed twice as noted below. If no then it
asks for the
>> files created by create_fid_files and the sensor file
should have
>> the fiducials edited out. Please correct me if I'm
wrong but it
>> does seem to have worked when done this way. I didn't
get the
>> error that Carsten reported.
>>
>> Cheers!
>>
>> Joe
>>
>> ---------------------------------------------------------------------
>> -----------
>>
>> Joseph Dien
>> Assistant Professor of Psychology
>> Department of Psychology
>> 419 Fraser Hall
>> 1415 Jayhawk Blvd
>> University of Kansas
>> Lawrence, KS 66045-7556
>> E-mail: [log in to unmask]
>> Office: 785-864-9822 (note: no voicemail)
>> Fax: 785-864-5696
>> http://people.ku.edu/~jdien/Dien.html
>>
>>
>
> --
> ===================================================
> Christophe Phillips, Ir, PhD
> F.N.R.S. Research Associate
>
> Cyclotron Research Centre, B30
> University of Liege, Sart Tilman
> 4000 Liege, Belgium
>
> Tel: +32 4 366 2316 (secr.)
> +32 4 366 2366
> Fax: +32 4 366 2946
> email: [log in to unmask]
> web : http://www.ulg.ac.be/crc
> ===================================================
>
------------------------------------------------------------------------
--------
Joseph Dien
Assistant Professor of Psychology
Department of Psychology
419 Fraser Hall
1415 Jayhawk Blvd
University of Kansas
Lawrence, KS 66045-7556
E-mail: [log in to unmask]
Office: 785-864-9822 (note: no voicemail)
Fax: 785-864-5696
http://people.ku.edu/~jdien/Dien.html
