A diffusion tensor imaging study comparing brain activity of six dyslexic children versus six normal controls. Two-sample tests produced z-values at \(N = 15443\) voxels (3-dimensional brain locations), with each \(z_i \sim N(0,1)\) under the null hypothesis of no difference between the dyslexic and normal children.
data(data.dti)A data frame with 15443 observations on the following 4 variables.
coordxA list of x coordinates
coordyA list of y coordinates
coordzA list of z coordinates
zThe \(z\)-values.
Efron, B. (2012). "Large-scale inference: empirical Bayes methods for estimation, testing, and prediction". Cambridge University Press.