Homer3 GLM Model
I am trying to obtain a group level GLM model in Homer3. My first question is regarding the input 'trange'. Our data is formatted such that each participant first completes a task over an unspecified time interval. The task length is highly variable per participant (for example, it may take one participant 5 minutes and another 10 minutes). Then, every participant completes a series of three minute tasks. My question is, what should I set the input 'trange' to if the task lengths are not all the same for each participant, or each task?
Another issue I am running into is extracting beta values from the groupResults.mat file. I found the following example:
But I am a bit confused still on the formatting. I have seen other examples where other numbers are used instead of (1). Where do these values come from?