Re: [Freesurfer] selxavg-sess: error message

2004-07-27 Thread Doug Greve
Can you send me one of your paradigm files along with your mkanalysis command-line? How many time points do you have? On Tue, 27 Jul 2004, Olivier Piguet wrote: I tried the gammafit option but I am getting the same error message whether I specify a time window or not. Is there anything else th

Re: [Freesurfer] selxavg-sess: error message

2004-07-27 Thread Olivier Piguet
I tried the gammafit option but I am getting the same error message whether I specify a time window or not. Is there anything else that I should check? The parafile contains 19 conditions + null. It is based on the subjects' responses (6 possible responses for 3 stimulus types = 18 conditions;

Re: [Freesurfer] selxavg-sess: error message

2004-07-21 Thread Doug Greve
This means that the design matrix is ill-conditioned. This can happen if your using an FIR model (ie, not using -gammafit) and the stimuli are presented with some fixed timing with respect to each other with the elapsed time between them being less than the FIR time window. For example, if you pr

[Freesurfer] selxavg-sess: error message

2004-07-21 Thread Olivier Piguet
Good morning, I am getting the following error message whilst trying to run the selxavg-sess command: ERROR: paradigm is ill-conditioned (5.37345e+18). Check your paradigm file for file for periodicities or for some event types that all ways follow other event types (or itself). >> quiting matla