Hello,
I was hoping to use 3dfim+ to calculate the cross-correlation of a alpha power time series with the measured FMRI time series for each voxel. But an error occur:Input ideal time series file ‘EO_alpha_ps_conv_HRF_ts_normalized.txt’ is too short. I am sure my FMRI time series has 187 data points and my alpha time series also has 187 data points.
I am wondering if txt. is not fit to be a ideal_file fomat.
Are your time series in a row or column? If I recall 3dfim+ likes the ideal file in a column. To convert from row to column is trivial, just add a ’ at the end of your ideal file name on the 3dfim+ command line. Though you will more than likely need to add a \ before the ’ in order to prevent the shell from interpreting it.
You command will look something like:
3dfim+ -input input+tlrc.HEAD -ideal_file EO_alpha_ps_conv_HRF_ts_normalized.txt' -out Correlation -bucket correlation
The National Institute of Mental Health (NIMH) is part of the National Institutes of Health (NIH), a component of the U.S. Department of Health and Human Services.
Freedom of Information Act |
HHS Vulnerability Disclosure
National Institute of Mental
Health | National Institutes of Health | U.S.
Department of Health and Human Services |