function summary=stat_summary(input_file, fwhm, df, mask_file, mask_thresh, ... input_thresh, flip); %STAT_SUMMARY % % STAT_SUMMARY( INPUT_FILE , [FWHM , [DF , [MASK_FILE, MASK_THRESH ... % [, INPUT_THRESH [, FLIP]]]]] ) % % Finds local maxima and clusters of INPUT_FILE above a INPUT_THRESH % and MASK_FILE above MASK_THRESH (ignored if empty; empty by default). % If INPUT_THRESH < 1 then it is taken as a probability and threshold is % chosen so that the uncorrected P-value is INPUT_THRESH (0.001 by default), % If MASK_THRESH is a vector [a b], a<=b, then mask is a=1000 then DF is set it Inf, so that it calculates % thresholds for a Gaussian image (if DF is very large the t-dbn % is almost identical to the Gaussian dbn). % If DF=[DF1, DF2] then these are the df's of the F statistic image. % If DF2 >= 1000 then DF2 is set to Inf. Default is Inf. % % SUMMARY is a matrix with 12 columns. % Col 1: index of cluster, in descending order of cluster volume. % Col 2: volume of cluster in mm^3. % Col 3: resels of cluster. % Col 4: P-value of cluster extent. % Col 5: P-value if the cluster was chosen in advance, e.g. nearest to an ROI. % Col 6: values of local maxima, sorted in descending order. % Col 7: P-value of local maxima. % Col 8: P-value if the peak was chosen in advance, e.g. nearest to an ROI. % Col 9: Q-value or false discovery rate ~ probability that voxel is not signal. % Cols 10-12: x,y,z coords of local maxima in C notation i.e. starting at 0. % If x or y step sizes are negative, then their voxel indices % are reversed so that they agree with 'register'. if nargin < 2 fwhm=0 end if nargin < 3 df=Inf end if nargin < 4 mask_file=[]; end if nargin < 6 input_thresh=0.001 end if nargin < 7 flip=1 end if input_thresh < 1 input_thresh=stat_threshold(0,1,0,df,input_thresh) end [search_volume, voxel_volume]= ... glass_brain(input_file,input_thresh,mask_file,mask_thresh,flip); lm=locmax(input_file,input_thresh,mask_file,mask_thresh,fwhm,flip); [p_peak, p_cluster, p_peak1, p_cluster1]= ... stat_threshold(search_volume, voxel_volume, fwhm, ... df, lm(:,1), input_thresh, lm(:,6), 3); q_value = fdr_threshold( input_file, input_thresh, ... mask_file, mask_thresh, df, lm(:,1),flip); n=size(lm,1); ['clus vol resel p-val (one) peak p-val (one) q-val x y z'] summary=[repmat(' ',n,1) num2str(round(lm(:,5))) repmat(' ',n,1) ... num2str(round(lm(:,6))) repmat(' ',n,1) ... num2str(round(lm(:,7))) repmat(' ',n,1) ... num2str(round(p_cluster*1000)/1000) repmat(' (',n,1) ... num2str(round(p_cluster1*1000)/1000) repmat(') ',n,1) ... num2str(round(lm(:,1)*100)/100) repmat(' ',n,1) ... num2str(round(p_peak*1000)/1000) repmat(' (',n,1) ... num2str(round(p_peak1*1000)/1000) repmat(') ',n,1) ... num2str(round(q_value'*1000)/1000) repmat(' ',n,1) ... num2str(round(lm(:,2:4)))] return