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NoiseCloud Features
function feature = nc_kurtosis_spatial(spatialMap)
% FEATURE NAME: Kurtosis
% FEATURE TYPE: spatial.gist
% We take a component image, sum the voxel values quadrupled, and divide by the
% number of voxels, subtract 3. We then normalize the value by linear scaling transform of abs(ln(kurtosis))
% This does the same thing as doing kurtosis(curr_network(:))
ICkurt = sum(power(spatialMap,4)) / length(spatialMap(:));
feature = abs(log(ICkurt));
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