In one human brain. But Brodmann included brains of various other species. Also he analyzed the cytoarcitectonics on the surface AND down the sulci (see, for example, his figs. 87 & 88), only the maps were roughly drawn on the surface. However, there is some evidence (Sanides, Monographien aus dem Gesamtgebiet der Neurologie und Psychiatrie, Heft 98, 1962; unfortunately just in German) that at least some sulci are, to an appreciable extent, relevant for the transitions.
Von Economos maps contain more detail, are based on more brains and are better documented. See
http://content.karger.com/ProdukteDB/Katalogteile/isbn3_8055/_82/_89/atlas_01.pdf
to get an impression.
The Juelich probabilistic labels - even though continuously expanded - are also covering only a selection of areas and are based on a limited number of brains (around 10, as far as I remember).
Last but not least - don't forget about myeloarchitectonics (Flechsig, Vogt), and remember MT+ (http://cercor.oxfordjournals.org/content/3/2/79.abstract), for example. BA11, however, is not going to be functionally distinct;)
Cheers-
Andreas
________________________________________
Von: FSL - FMRIB's Software Library [[log in to unmask]] im Auftrag von Cornelius Werner [[log in to unmask]]
Gesendet: Donnerstag, 20. Januar 2011 09:53
An: [log in to unmask]
Betreff: Re: [FSL] creating ROIs based on brodmann map
Hi,
I just want to point out something you probably know already - BA11
does not equal orbitofrontal gyrus. The Brodmann maps were described
in the early 20th century on one brain only and designate
cytoarchitectonically distinct areas on the cortical surface (not the
sulci!) of this single brain. They do not necessarily correlate with
gyral anatomy and certainly are subject to a significant
inter-individual variability. If you are interested in
cytoarchitectonic-functional correlations, use the Juelich histo-maps
built into FSL instead (see the relevant literature (Zilles, Amunts,
Eickhoff etc.) for the reasons why). If you are primarily interested
increating anatomical ROIs (which in itself might or might not be a
good idea), why not use the built-in anatomical atlases?
Best regards,
Cornelius
On Thu, Jan 20, 2011 at 12:13 AM, Dianne Patterson
<[log in to unmask]> wrote:
> I've found this useful:
> http://www.bion.de/index.php?title=MARINA&lang=eng
> Just check the left-right flip as it goes wrong for me in the conversion to
> fsl, so I have to flip it and check it.
> -Dianne
> P.S.
> I have also noticed that there is something unsatisfactory about the
> talairach atlas in fsl.
>
> On Wed, Jan 19, 2011 at 12:54 PM, Saeideh Bakhshi <[log in to unmask]>
> wrote:
>>
>> Hello FSL experts,
>>
>> I am trying to locate some brodmann areas using FSL and saving them as
>> masks, the problem is when I use Talairach atlas for a brodmann area
>> such as Orbital Frontal Gyrus (BA11) or similar areas, it renders a
>> huge area of the brain. Is this atlas usable on MNI space?
>> Do you have suggestions for a simple mapping of brodmann areas or AAL
>> that I can use in FSL?
>>
>> Thanks,
>> Saeideh
>>
>
>
>
> --
> Dianne Patterson, Ph.D.
> [log in to unmask]
> University of Arizona
> SLHS 314
> 621-9877
>
--
Dr. med. Cornelius J. Werner
Department of Neurology
RWTH Aachen University
Pauwelsstr. 30
52074 Aachen
Germany
Institute of Neuroscience and Medicine
MR Physics - INM4
Research Centre Juelich
52425 Juelich
Germany
::: Please encrypt confidential data :::
|