% Please save all files name in symmetrically before doing the operation
% names for example f1,f2,f3...
%Save the folder of files in the current directory
path_directory='folder_name_here';
% Pls note the format of files,change it as required
original_files=dir([path_directory '/*.file_extention_format']);
for k=1:length(original_files)
filename=[path_directory '/' original_files(k).name];
file-load statement here % Load file
% Next do your operation and finding
end