Dear Bruce,

Sorry for the delay in replying - busy summer.

Using mris_divide parcellation actually worked really well once I figured out how to convert the Hinds V1 labels to Annotations (including creating a colour table), dividing the Annotations, and then converting them back to individual labels.

I'd put in a vote for allowing a simple divide of a single label at some stage and also dividing parallel to the primary eigenaxis at some stage (maybe these are already in the pipeline)

But many thanks for the suggestion, its already proving very useful for us.

Krish

--
Prof. Krish Singh
CUBRIC
School of Psychology / Ysgol Seicoleg
Cardiff University /  Prifysgol Caerdydd
Park Place / Plas y Parc
Cardiff  / Caerdydd
CF10 3AT, UK
Tel / Ffôn: 02920 874690 / 870365 
Fax / Ffacs: 02920 870339
Email / Ebost : singhkd@cardiff.ac.uk




On 21 Jul 2011, at 14:09, Bruce Fischl wrote:

Hi Krish,

1. What do you mean "just the calcarine itself"? Do you mean the fundus? mris_divide_parcellation can be used to chop the pericalcarine or V1 labels up along it's primary eigenaxis, which is a reasonable approximation to eccentricity.

2. You could draw occipital pole in fsaverage and use mri_label2label to map it to individuals. Not sure how well that works though as I've never tried it.

cheers
Bruce


On Thu, 21 Jul 2011, Krish Singh wrote:

Dear All,
I've been trying out the automatic V1 labelling using the Hinds et al. (NeuroImage, 2008 vol. 39 (4) pp. 1585-99) and, as far as I can tell
it seems to work pretty well on our anatomical scans (In general I'd be interested in the opinions/experiences of others who've tried it).
I have a couple of questions:
1) Is it possible to automatically label just the calcarine itself? I know there is a pericalcarine label, but I am hoping to essentially
label the line of the calcarine itself.
2) Is it possible to automatically find the occipital pole of the calcarine?
The reason I want to do this is that it would then enable me to calculate the distance down the calcarine and the lateral distance away
from the calcarine for each patch in the Hinds-V1 label. That potentially could be really useful in terms of sub-dividing the Hinds label
into foveal and eccentric zones (although without retinotopy individual differences in M-scaling, for example, might limit
interpretability).
Would mris_divide_parcellation be useful here?
Thanks in advance,
Krish
--
Prof. Krish Singh
CUBRIC
School of Psychology / Ysgol Seicoleg
Cardiff University /  Prifysgol Caerdydd
Park Place / Plas y Parc
Cardiff  / Caerdydd
CF10 3AT, UK
Tel / Ffôn: 02920 874690 / 870365 
Fax / Ffacs: 02920 870339
Email / Ebost : singhkd@cardiff.ac.uk



The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.