You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: icatb_orthoViewer.m
    path of file: ./repos/bspm/thirdparty/MIALAB/GroupICATv4.0a/icatb/icatb_display_functions
    
    the code of the file until where you have to start completion: function icatb_orthoViewer(parameters, minimumParametersStructu
    
function fMRITimecourseCallback(hObject, event_data, handles)

set(handles, 'pointer', 'watch');

icatb_defaults;
global DETRENDNUMBER;

drawnow;

data = get(handles, 'userdata');

real_world_coords = data.real_world_coords;
fmriFiles = data.fmriFiles;
realPos = data.realPos;
icaPos = data.icaPos;
complexInfoRead = data.complexInfoRead;
dataType = data.dataType;
diffTimePoints = data.diffTimePoints;
flagTimePoints = data.flagTimePoints;
fmriHInfo = data.fmriHInfo;

popUpValue = get(hObject, 'value');
numOfSub = size(fmriFiles,2);
numOfSess = size(fmriFiles(1).ses,2);
answerQuestion = 1;


[realWorldPos, voxelCoord] = getCoord(fmriHInfo.V(1), real_world_coords, realPos);

%check to make sure they want to look at mean
if(popUpValue > numOfSub*numOfSess)
    string1 = ['Do you want to look at the mean and standard error of the mean for all ', num2str(numOfSub*numOfSess), ' data sets.'];
    %answer = questdlg(string);
    [answerQuestion] = icatb_questionDialog('title', 'Calculate Mean', 'textbody', string1);
    
end