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Brain Imaging and Behavior

, Volume 12, Issue 3, pp 640–652 | Cite as

Thalamo-cortical functional connectivity in schizophrenia and bipolar disorder

  • Kristina C. Skåtun
  • Tobias Kaufmann
  • Christine L. Brandt
  • Nhat Trung Doan
  • Dag Alnæs
  • Siren Tønnesen
  • Guido Biele
  • Anja Vaskinn
  • Ingrid Melle
  • Ingrid Agartz
  • Ole A. Andreassen
  • Lars T. WestlyeEmail author
Original Research

Abstract

The thalamus is a highly connected subcortical structure that relays and integrates sensory and cortical information, which is critical for coherent and accurate perceptual awareness and cognition. Thalamic dysfunction is a classical finding in schizophrenia (SZ), and resting-state functional MRI has implicated somatomotor and frontal lobe thalamic dysconnectivity. However, it remains unclear whether these findings generalize to different psychotic disorders, are confined to specific thalamic sub-regions, and how they relate to structural thalamic alterations. Within-thalamic and thalamo-cortical functional connectivity was assessed using resting-state functional MRI data obtained from patients with SZ (n = 96), bipolar disorder (BD, n = 57), and healthy controls (HC, n = 280). Further, we used thalamic sub-regions as seeds to investigate specific cortical connectivity patterns, and performed structural analyses of thalamic volume and shape. Results showed reduced within-thalamic connectivity and thalamo-frontoparietal coupling in SZ and increased thalamo-somatomotor connectivity in BD. One thalamic sub-region showed increased sensory connectivity in SZ and eight sub-regions showed reductions with frontal and posterior areas. Reduced gray matter and shape abnormalities were found in frontal-projecting regions in both SZ and BD, but did not seem to explain reduced functional connectivity. Aberrant thalamo-cortical connectivity patterns in SZ and BD supports the notion of the thalamus as a key structure in the functional connectome across the psychosis spectrum, and the frontal and somatomotor anatomical distribution is in line with the characteristic cognitive and perceptual symptoms in psychotic disorders.

Keywords

Thalamus Functional connectivity Imaging Resting-state Psychosis 

Notes

Acknowledgements

We thank the study participants and the members of NORMENT involved in data collection, and the staff at the Department of Radiology and Nuclear Medicine.

Compliance with ethical standards

Funding

This work was funded by the Research Council of Norway (204966/F20, 223273, 213837); the South-Eastern Norway Regional Health Authority (2015-073, 2012-047, 2013-123); European Community’s 7th Framework Programme (602450, IMAGEMEND), and Kristian Gerhard Jebsen Foundation.

Conflict of interest

Ole A. Andreassen has received a speakers honorarium from Lilly, Otsuka, Lundbeck. Kristina Skåtun, Tobias Kaufmann, Siren Tønnesen, Dag Alnæs, Anja Vaskinn, Christine Brandt, Nhat Trung Doan, Ingrid Melle, Ingrid Agartz, Guido Biele, and Lars T. Westlye declare no conflict of interest.

Ethical approval

All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, and the applicable revisions at the time of the investigation. Informed consent was obtained from all patients for being included in the study.

Supplementary material

11682_2017_9714_MOESM1_ESM.docx (1.1 mb)
ESM 1 (DOCX 1101 kb)

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Kristina C. Skåtun
    • 1
  • Tobias Kaufmann
    • 1
  • Christine L. Brandt
    • 1
  • Nhat Trung Doan
    • 1
  • Dag Alnæs
    • 1
  • Siren Tønnesen
    • 1
  • Guido Biele
    • 2
  • Anja Vaskinn
    • 1
    • 3
  • Ingrid Melle
    • 1
  • Ingrid Agartz
    • 1
    • 4
  • Ole A. Andreassen
    • 1
  • Lars T. Westlye
    • 1
    • 3
    Email author
  1. 1.NORMENT, KG Jebsen Centre for Psychosis Research, Division of Mental Health and AddictionOslo University Hospital & Institute of Clinical Medicine, University of OsloOsloNorway
  2. 2.Department of Child Development and Mental Health, Division of Mental HealthNorwegian Institute of Public HealthOsloNorway
  3. 3.Department of PsychologyUniversity of OsloOsloNorway
  4. 4.Department of Psychiatric ResearchDiakonhjemmet HospitalOsloNorway

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