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.
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. > On Thu, 2009-08-06 at 20:57 +0200, Christophe Destrieux wrote: > > > Hi Narly > > > > below are a few explanations on the transverse temporal gyrus in the > > a2005 parcellation > > > > At the superior aspect of the superior temporal gyrus: > > > > * the transverse temporal *sulcus* limits the planum temporale > > (posteriorly) from the transverse temporal gyrus (anteriorly); it > > originates at the posterior segment of the lateral sulcus, runs > > anterior and lateral and joins the lateral aspect of the temporal > > lobe. > > > > * The transverse temporal gyrus (or Heschl's gyrus) is just anterior > > and parallel to the transverse temporal sulcus. Instead of a > > single transverse temporal gyrus, several ???transverse??? temporal > > gyri bordered by intermediate sulci may be present. Only the more > > anterior transverse temporal gyrus is labeled in Freesurfer, the > > posterior ones being included in the planum temporale since they > > where shown not to correspond to primary, but to secondary > > auditory cortex > > > > I hope that it helped > > > > cheers > > > > -- > > Christophe Destrieux > > Laboratoire d'Anatomie - Facult?? de M??decine - 10 Bd Tonnell?? > > 37032 Tours - France > > tel (33) 2 47 36 61 36 - fax (33) 2 47 36 62 07 > > > > > Narly, > > > > > > I'm forwarding this to Christophe Destrieux, cc'd, who I think can > > > answer your question about how that region is labelled. > > > > > > It is not possible to do translucent viewing in tksurfer. However, it > > > is possible in qdec. Just use the load surface and load annotation menu > > > options. > > > > > > Nick > > > > > > > > > On Thu, 2009-08-06 at 16:26 +0100, Narly A Golestani wrote: > > > > > >> Hello, > > >> > > >> I would like to know more about the automatic labelling of the transverse > > >> temporal gyrus is done. I looked at the below article but don't see any > > >> details about this structure. > > >> > > >> https://surfer.nmr.mgh.harvard.edu/ftp/articles/fischl04-parcellation.pdf > > >> > > >> I would for example like to know how the boundaries of this structure are > > >> defined/determined. > > >> > > >> Also, when using tksurfer to view labels ('import annotation'), is it > > >> possible to make the 3D brain surface (and labels) translucent so that > > >> one > > >> can more carefully view where this (medial-spanning) gyrus was > > >> identified? > > >> > > >> thanks in advance, > > >> Narly. > > >> > > >> _______________________________________________ > > >> Freesurfer mailing list > > >> Freesurfer@nmr.mgh.harvard.edu > > >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > >> > > >> > > >> > > > > > > > > > > > > ==================================== Narly Golestani Institute of Cognitive Neuroscience 17 Queen Square London WC1N 3AR United Kingdom Tel: +44 (0)20 7679 7529 ====================================
_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
