Dear AFNI experts,
I have a question about the output file of the amplitude modulation regression analysis. In my ER design, I present words with different word frequency. I aim to check the frequency-related brain effects, so I choose 3dDeconvolve amplitude modulation regression. I have the onset and word frequency info of each word, so first I use 1dMarry to make an AM file onset_freq.1D. Then in the 3dDeconvolve, I use -stim_times_AM2 option. The output includes two sub-bricks: onset-freq[0] and onset-freq[1]. My question is about the meanings of the two results. Does the onset-freq[0] show the significant effect related to the mean word frequency? And does the onset-freq[1] show the frequency-related effects (i.e. positive or negative relations)? Thank you for advice!
Best,
Jie
