Dear BST experts,
I have EEG and Structural data from 14 Subjects. EEG data were acquired under three different conditions. For each subject, each condition averaged EEG data (ERP) were calculated, and corresponding cortical sources were obtained using sLORETA approach. Each source map was projected on default anatomy ICBM152 (Brainsuite). For the sources maps in MNI space were transformed to z-score relative to the baseline. Further 5 mm FWHM kernel was applied to spatial smooth absolute values. To perform cluster based permutations, 14 files (1 for each subject) from condition A under were dragged under Process 2>> files A and 14 files from condition B under file B.
Under Process >> test >> Ft_sourcestatistics
Time window was 50 ms -500 ms about stimulus onset
Paired t-test, two-sided and minimum neighbours were set to 10. After all, randomizations are performed results appeared on BST panel but while opening it gives the message as follow. BST> All values are null. Please check your input file.
So all the values are null. I unable to figure out the problem or if I am doing anything wrong. I request your help on the issue?
The command windows messages are below for your reference. Thanks in advance for help.
Best Regards
Eshwar
BST> FieldTrip install: C:\Users\u0092162\Documents\MATLAB oolboxes\fieldtrip
the call to “ft_selectdata” took 1 seconds
using “ft_statistics_montecarlo” for the statistical testing
using “ft_statfun_depsamplesT” for the single-sample statistics
constructing randomized design
total number of measurements = 28
total number of variables = 2
number of independent variables = 1
number of unit variables = 1
number of within-cell variables = 0
number of control variables = 0
using a permutation resampling approach
repeated measurement in variable 2 over 14 levels
number of repeated measurements in each level is 2 2 2 2 2 2 2 2 2 2 2 2 2 2
computing a parametric threshold for clustering
computing statistic
estimated time per randomization is 2.32 seconds
computing statistic 1000 from 1000
Warning: adding C:\Users\u0092162\Documents\MATLAB oolboxes\fieldtrip\external\spm8 toolbox to your MATLAB path
found 0 positive clusters in observed data
found 0 negative clusters in observed data
Warning: no clusters were found in the observed data
> In fieldtrip\private\clusterstat at 242
In ft_statistics_montecarlo at 356
In ft_sourcestatistics at 202
In process_ft_sourcestatistics>Run at 208
In macro_methodcall at 30
In process_ft_sourcestatistics at 26
In bst_process>ProcessStat at 1190
In bst_process>Run at 178
In bst_call at 26
In macro_methodcall at 37
In bst_process at 36
In panel_process2>RunProcess at 146
In bst_call at 28
In macro_methodcall at 39
In panel_process2 at 26
In gui_brainstorm>CreateWindow/ProcessRun_Callback at 696
In bst_call at 28
In gui_brainstorm>@(h,ev)bst_call(@ProcessRun_Callback) at 250
using a cluster-based method for multiple comparison correction
the returned probabilities and the thresholded mask are corrected for multiple comparisons
the call to “ft_sourcestatistics” took 907 seconds
BST> Saving protocol “vac_cue”…