[caret-users] Question about paint regions modalities?

[David Van Essen]

Antoine et al.,

John's comments are on the mark.

Subdividing cortex into different functional modalities is challenging  
to do in macaques, where there is a lot of experimental data, and even  
more difficult in humans.  Nonetheless, because the issue is of  
obvious importance, I stuck my neck out and made a 'first-pass'  
estimate for a chapter that was published in 2004.

I certainly hope and expect that this map will be updated before too  
long, based on the outpouring of recent fMRI studies, but it is not an  
easy task and is not one that leads to sharp boundaries between  
different modalities.

David VE

On Apr 11, 2008, at 11:46 AM, John Harwell wrote:

> Hi Antoine,
>
> If you have paint selected as an overlay with modalities as the
> selected paint column and press the "?" button, comment information is
> displayed.  For the modalities, the comment is:
>
> Cleaned up Right modalities (language, gustatory, olfactory) 27 Aug  
> 2006
> Motor revised; cognitive, emotion_limbic added (DVE 13 Aug 2006)
> Visual (blue), auditory (red), somatosensory (green),
> motor (purple), olfactory (brown). From:
> Van Essen, D.C. (2002) Organization of visual areas in macaque and
> human cerebral cortex. In: The Visual Neurosciences.
> L. Chalupa and J.S. Werner, MIT Press (in press)
>
> A preprint of the referenced article is available at "http://brainmap.wustl.edu/resources/VisChapter.pdf
> ".
>
> Also in the PALS atlas is an areal estimation file with a modalities
> column.  This is similar to a paint file, however, the boundaries
> between regions are "fuzzy" to indicate the boundaries are estimated
> and not exact.
>
> My suggestion is that you read the referenced article prior to using
> the modalities as an ROI.  I expect that Dr. Van Essen will reply at
> some time with his opinion.
>
> -----------------------------------
> John Harwell
> john at brainvis.wustl.edu
>
> Department of Anatomy and Neurobiology
> Washington University School of Medicine
> 660 S. Euclid Ave   Box 8108
> Saint Louis, MO 63110
>
>
>
>
> On Apr 11, 2008, at 11:05 AM, Antoine Aballéa wrote:
>> Hi,
>>
>> I'm using the 'PALS_B12.BOTH-HEMS.For Stereotaxic foci analyses'
>> spec file to draw borders in order to define RegionS of Interest. I
>> used the option "create borders from paint regions" and saw that
>> there was a paint region named "modalities - Right / Left Pals B12"
>> with, for instance, the Motor & Somatosensory modalities.
>> I was wondering how and from which data these modalities were
>> constructed?
>> Is this something reliable that could be used to define RoIs?
>>
>> Thanks in advance!
>>
>> -AA
>>
>> -- 
>>
>> Antoine Aballéa, Doctorant Neurosciences
>> http://antoine.aballea.googlepages.com
>>
>> Centre de Neuroscience Cognitive
>> UMR5229 CNRS Université Lyon 1
>> ISC / 67 Bd. Pinel / 69675 BRON Cedex
>>
>> aballea at isc.cnrs.fr
>> Bureau: +33(0)4.37.91.12.27.
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