Submitted for Publication: May 28, 2014; final revision received August 21, 2014; accepted September 19, 2014.
Published Online: February 18, 2015. doi:10.1001/jamapsychiatry.2014.2490.
Study concept and design: Hyett, Breakspear, Parker.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Hyett, Breakspear, Parker.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Hyett, Breakspear, Friston, Guo.
Obtained funding: Parker.
Administrative, technical, or material support: Hyett.
Study supervision: Breakspear, Parker.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by grants from the National Health and Medical Research Council of Australia (program grants 510135 and 1037196) (Mr Hyett and Drs Breakspear and Parker), Queensland Health (Mr Hyett and Dr Breakspear), and the Wellcome Trust (Dr Friston).
Role of the Funder/Sponsor: The funding sources had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: Stephen Smith, DPhil (Department of Clinical Neurology and Centre for Functional Magnetic Resonance Imaging of the Brain [FMRIB], Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, England), provided helpful technical advice regarding the ICA analysis. No financial compensation was provided.