forwarding to the list....
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 - Faculté de Médecine - 10 Bd Tonnellé 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.
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