From Christophe....

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Hi Narly

Hello Christophe, hello all,

I would like to know if the way that the transverse gyrus is labelled in freesurfer, and specifically the fact that in the case of multiple transverse gyri only the more anterior transverse temporal gyrus (ie; Heschl's gyrus) is included, has changed across different releases of freesurfer, or if it differs between the different atlases used by freesurfer. I ask this because I see a somewhat different pattern of results in this part of the brain when comparing output generated by freesurfer version 3.0.5 and version 4.4.

the changed occured in 2005; but both atalases (atlas2002_simple.gcs and atlas2005_simple.gcs) were distributed for a while)

In the 2002 version the parcellation was indeed different :

* When several transverse temporal gyri were present they were grouped together in a common label with the sulcus limiting them (G_temp_sup-G_temp_transv_and_interm_S) * The sulcus posterior to this label was then labeled "S_temporal_transverse"

I hope that it helped

More generally, I would like to know if there is any version of freesurfer, or any atlas, that includes multiple transverse gyri when they exist (ie; that does NOT exclude the more posterior one in cases of multiple transverse gyri).

thanks in advance and best wishes, Narly.