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dc.contributor.authorWang, C
dc.contributor.authorJi, F
dc.contributor.authorHong, Z
dc.contributor.authorPoh, JS
dc.contributor.authorKrishnan, R
dc.contributor.authorLee, J
dc.contributor.authorRekhi, G
dc.contributor.authorKeefe, RSE
dc.contributor.authorAdcock, RA
dc.contributor.authorWood, SJ
dc.contributor.authorFornito, A
dc.contributor.authorPasternak, O
dc.contributor.authorChee, MWL
dc.contributor.authorZhou, J
dc.date.accessioned2021-02-05T00:31:41Z
dc.date.available2021-02-05T00:31:41Z
dc.date.issued2016-10-01
dc.identifierpii: S0033291716001410
dc.identifier.citationWang, C., Ji, F., Hong, Z., Poh, J. S., Krishnan, R., Lee, J., Rekhi, G., Keefe, R. S. E., Adcock, R. A., Wood, S. J., Fornito, A., Pasternak, O., Chee, M. W. L. & Zhou, J. (2016). Disrupted salience network functional connectivity and white-matter microstructure in persons at risk for psychosis: findings from the LYRIKS study. PSYCHOLOGICAL MEDICINE, 46 (13), pp.2771-2783. https://doi.org/10.1017/S0033291716001410.
dc.identifier.issn0033-2917
dc.identifier.urihttp://hdl.handle.net/11343/260042
dc.description.abstractBACKGROUND: Salience network (SN) dysconnectivity has been hypothesized to contribute to schizophrenia. Nevertheless, little is known about the functional and structural dysconnectivity of SN in subjects at risk for psychosis. We hypothesized that SN functional and structural connectivity would be disrupted in subjects with At-Risk Mental State (ARMS) and would be associated with symptom severity and disease progression. METHOD: We examined 87 ARMS and 37 healthy participants using both resting-state functional magnetic resonance imaging and diffusion tensor imaging. Group differences in SN functional and structural connectivity were examined using a seed-based approach and tract-based spatial statistics. Subject-level functional connectivity measures and diffusion indices of disrupted regions were correlated with CAARMS scores and compared between ARMS with and without transition to psychosis. RESULTS: ARMS subjects exhibited reduced functional connectivity between the left ventral anterior insula and other SN regions. Reduced fractional anisotropy (FA) and axial diffusivity were also found along white-matter tracts in close proximity to regions of disrupted functional connectivity, including frontal-striatal-thalamic circuits and the cingulum. FA measures extracted from these disrupted white-matter regions correlated with individual symptom severity in the ARMS group. Furthermore, functional connectivity between the bilateral insula and FA at the forceps minor were further reduced in subjects who transitioned to psychosis after 2 years. CONCLUSIONS: Our findings support the insular dysconnectivity of the proximal SN hypothesis in the early stages of psychosis. Further developed, the combined structural and functional SN assays may inform the prognosis of persons at-risk for psychosis.
dc.languageEnglish
dc.publisherCAMBRIDGE UNIV PRESS
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.titleDisrupted salience network functional connectivity and white-matter microstructure in persons at risk for psychosis: findings from the LYRIKS study
dc.typeJournal Article
dc.identifier.doi10.1017/S0033291716001410
melbourne.affiliation.departmentPsychiatry
melbourne.affiliation.departmentCentre for Youth Mental Health
melbourne.affiliation.facultyMedicine, Dentistry & Health Sciences
melbourne.source.titlePsychological Medicine
melbourne.source.volume46
melbourne.source.issue13
melbourne.source.pages2771-2783
dc.rights.licenseCC BY
melbourne.elementsid1082708
melbourne.contributor.authorFornito, Alexander
melbourne.contributor.authorWood, Stephen
dc.identifier.eissn1469-8978
melbourne.accessrightsOpen Access


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