Issue with dummy regressors.

[grandjeanlab]

Hello. I'm trying to run first level GLM. Everything works great until I try to add dummy regressors for subjects that did not complete a task. I followed the documentation and created files with NumEvents 0 and added these to the design_file.

When I add these dummy regressors, and only when I add these, all beta's, copes, and tscores files are empty images.

I checked both original and total design matrix files and they seem fine in both cases, with or without empty regressors. Columns for empty regressors are filed with 0, as expected.

The issue seem to affect both GLM and FIRSTLEVEL analysis function. I use the linux version of the script on Ubuntu 12.04.

[grandjeanlab]

I use the latest broccoli version downloaded from GITHUB.

I've put a an example scan with designs with and without dummy on my dropbox to illustrate the issue

%removed dropbox link

[wanderine]

How many runs do the subjects have? The dummy regressors are intended to be used if you have several runs, and one or more runs do(es) not have the specific task. If the subjects only have a single run, just drop that regressor in the design file.

2017-01-04 3:30 GMT+01:00 joanesg notifications@github.com:

I use the latest broccoli version downloaded from GITHUB.

I've put a an example scan with designs with and without dummy on my dropbox to illustrate the issue https://www.dropbox.com/s/03l2x54c0842ohp/GLM_dummy_test.zip?dl=0

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-- Anders Eklund, PhD

[grandjeanlab]

I have 10 runs, but I was testing the script one at a time first to make sure all running smoothly. Works alight when I run all 10 runs together. Thank you.