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  Ketamine decreases resting state functional connectivity between networks via the dorsal nexus: implications for major depression

Scheidegger, M., Walter M, Lehmann M, Metzger C, Grimm S, Boeker H, Boesiger P, Seifritz, E., & Henning, A. (2012). Ketamine decreases resting state functional connectivity between networks via the dorsal nexus: implications for major depression. Talk presented at 20th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2012). Melbourne, Australia.

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 Urheber:
Scheidegger, M, Autor
Walter M, Lehmann M, Metzger C, Grimm S, Boeker H, Boesiger P, Seifritz, E, Autor
Henning, A1, Autor           
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              

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 Zusammenfassung: Using resting state fMRI (rsfMRI), the „dorsal nexus“ (DN) was recently identified as a dorsomedial prefrontal cortex region showing increased depression-associated fMRI connectivity with portions of the cognitive control (CCN), the default mode (DMN), and the affective (AN) network. In this double-blind, randomized, placebo-controlled, crossover study we report decreased connectivity of the sgACC (AN) and PCC (DMN) via the DN 24 hours following the administration of an antidepressant dose of ketamine. We conclude that reducing the hyperconnectivity via the DN may play a critical role in reducing depressive symptomatology and thus represent a systems level mechanism of antidepressant treatment response.

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 Datum: 2012-05
 Publikationsstatus: Erschienen
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 Identifikatoren: URI: http://www.ismrm.org/12/Session13.htm
BibTex Citekey: ScheideggerWLMGBBSH201
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Titel: 20th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2012)
Veranstaltungsort: Melbourne, Australia
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