This dataset was obtained from the OpenfMRI project (http://www.openfmri.org).
Accession #: ds008
Description: Stop-signal task with unselective and selective stopping

Please cite the following references if you use these data:

Aron, A.R., Behrens, T.E., Smith, S., Frank, M.J., Poldrack, R.A. (2007). Triangulating a cognitive control network using diffusion-weighted magnetic resonance imaging (MRI) and functional MRI. J Neurosci, 27(14):3743-52


Release history:
10/06/2011: initial release
12/20/2012: The originally posted version of this dataset was missing some
onsets for task002. The newly posted version contains the full set of onsets
for all conditions.  If only the onsets and model info are needed, they can be
obtained by downloading the updated onsets file and untarring it in the main
ds008 directory.
3/21/2013: Updated release with QA information
2/19/2016: Updated orientation information in NIFTI header for better left-right determination
3/7/2016: Remove sub008 due to ambiguously defined task onsets and missing run data

This dataset is made available under the Public Domain Dedication and License 
v1.0, whose full text can be found at 
http://www.opendatacommons.org/licenses/pddl/1.0/. 
We hope that all users will follow the ODC Attribution/Share-Alike 
Community Norms (http://www.opendatacommons.org/norms/odc-by-sa/); 
in particular, while not legally required, we hope that all users 
of the data will acknowledge the OpenfMRI project and NSF Grant 
OCI-1131441 (R. Poldrack, PI) in any publications.