raw_data_name='NIRS-2013-11-18_001';
SamplingRate=6.25; 
waveLength_N=2; 
source_N=8;
detector_N=8;
time_point_N=6376;
source_detector_key=[1 2 3 4 5 6 7 8 0 0 0 0 0 0 0 0;...
                     0 0 0 0 0 0 0 0 1 2 3 4 5 6 7 8];