Hi shay Yes, either from ?h.curv (the spatially smoothed mean curvature) or the ?h.sulc, the average convexity. The midpoint is 0 by default but cam be changed in the GUI

Cheers Bruce

On Jun 10, 2012, at 9:07 PM, Shay Ohayon shay.ohayon@gmail.com wrote:

Hi All,

Another silly question. When one is rendering a flat map or an inflated surface, there are usually two colors (dark gray/light gray) that indicate whether regions originate from sulci or gyri. How are those usually obtained / derived? In other words, how do I determine the color of a surface vertex (i.e., whether it is a gyrus or a sulcus)? Are these derived from some thresholded curvature values?

Thanks,

-- Shay Tsao Lab Caltech

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