Hi Bruce, Is there some way to know when cuts have been made correctly so that distortion can be minimized? (Or conversely, some way to know when a given patch has or will undergo "too much" distortion during flattening?
Thanks! Michael On Mon, May 11, 2015 at 12:24 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu> wrote: > Hi Sarah > > the unfolding tries very hard to preserve exactly this - the metric > properties. If you cut off the occipital third of cortex and flatten it > (after introducing some cut along the axis of the "cone") you should be > able to get to around 10% distortion or below, which I assume is good > enough. > > cheers > Bruce > > > > On Mon, 11 May 2015, Sarah Finnegan wrote: > > Dear all, >> I am looking to take two measures within the visual cortex. >> 1) A measure of width and length for each activation cluster overlaid onto >> the flattened cortical surface. >> 2) A measure of spacing between each cluster >> >> I can find how to take measures of area but I specifically want to know >> the >> width and length separately to correlate this to potential stripe >> systems. >> My plan was to fit an oval to each of these clusters and measure length >> through the cardinal axis and width through the minor, spacing would be >> calculated from a line fit to the minor axis of each cluster. >> Unfortunately >> I think the unfolding process will have changed the spacing relationships >> between clusters to make this inappropriate. >> >> I wonder if there is a command or established pipeline to take such >> measures? >> >> Thanks for your help! >> Sarah >> >> > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > 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. > >
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