np is the number of vertices that meet the sign criteria (ie, >0 or <0 or abs) nv is the total number of vertices vwth is the voxel/vertex-wise threshold (-log10(p))

doug

On 10/29/2013 04:44 AM, Harry Hallock [hhal5293@uni.sydney.edu.au] wrote:

Hi all,

Apologies for this basic question, but im quite the newbie.

I'mcurrently using tksurfer and got this result:

surfer: filling (ctrl-c to cancel).... done, 4646 vertices filled surfer: performing FDR on 1989 vertices MRISfdr2vwth(): np = 1989, nv = 163842, fdr = 0.05, vwth=2.24098 MRISfdr2vwth(rate=0.050000, sign=0, 1, only_marked=1) = 2.240980 surfer: MRISfdr2vwth with rate 0.05 and sign 0 returned threshold 2.240980

I was wondering what np, nv and vwth actually stand for?

Also does anyone know how to get the T or F statistic?

Thanks, Harry

*Harry Hallock*| MPhil Candidate Regenerative Neuroscience Group | Brain & Mind Research Institute *THE UNIVERSITY OF SYDNEY*

Room 408, Level 4, M02K | 94 Mallett St Camperdown | NSW | 2050| Australia *T +*61 2 9114 4138 *E *hhal5293@uni.sydney.edu.au*| W *www.rng.org.au

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