[FieldTrip] plotting differences in power spectrum
Keith.McConnell at cchmc.org
Wed Sep 11 19:48:43 CEST 2013
I have an MEG experiment in which I expect my stimulus to incite multiple reactions. I have run the experiment so that the stimulus is applied at two different intensities. I would like to use the lower intensity stimulus response as a 'mask' for the higher intensity response.
I can calculate the power spectrum for both intensities and find the difference.
Although I can generate an ft_multiplot for each individual power spectrum, I cannot generate a ft_multiplotTFR of the difference between the two spectra.
I get the following error messages:
Error using ft_checkdata (line 366)
This function requires freq data as input.
Error in ft_multiplotTFR (line 135)
data = ft_checkdata(data, 'datatype', 'freq');
Can anyone provide some help?
Keith McConnell, M.S.
Division of Pulmonary Medicine
Cincinnati Children's Hospital Medical Center
Cincinnati, OH 45229
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