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000857706 1001_ $$00000-0002-3886-2226$$aJames, Gregory M$$b0
000857706 245__ $$aParcellation of the Human Cerebral Cortex Based on Molecular Targets in the Serotonin System Quantified by Positron Emission Tomography In vivo
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000857706 520__ $$aParcellation of distinct areas in the cerebral cortex has a long history in neuroscience and is of great value for the study of brain function, specialization, and alterations in neuropsychiatric disorders. Analysis of cytoarchitectonical features has revealed their close association with molecular profiles based on protein density. This provides a rationale for the use of in vivo molecular imaging data for parcellation of the cortex with the advantage of whole-brain coverage. In the current work, parcellation was based on expression of key players of the serotonin neurotransmitter system. Positron emission tomography was carried out for the quantification of serotonin 1A (5-HT1A, n = 30) and 5-HT2A receptors (n = 22), the serotonin-degrading enzyme monoamine oxidase A (MAO-A, n = 32) and the serotonin transporter (5-HTT, n = 24) in healthy participants. Cortical protein distribution maps were obtained using surface-based quantification. Based on k-means clustering, silhouette criterion and bootstrapping, five distinct clusters were identified as the optimal solution. The defined  clusters proved of high explanatory value for the effects of psychotropic drugs acting on the serotonin system, such as antidepressants and psychedelics. Therefore, the proposed method constitutes a sensible approach towards integration of multimodal imaging data for research and development in neuropharmacology and psychiatry. Key words: cortex, cortical reconstruction, molecular imaging, parcellation, PET, serotonin
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000857706 7001_ $$0P:(DE-HGF)0$$aPhilippe, Cécile$$b4
000857706 7001_ $$0P:(DE-HGF)0$$aKautzky, Alexander$$b5
000857706 7001_ $$0P:(DE-HGF)0$$aNics, Lukas$$b6
000857706 7001_ $$0P:(DE-HGF)0$$aVraka, Chrysoula$$b7
000857706 7001_ $$0P:(DE-HGF)0$$aGodbersen, Godber M$$b8
000857706 7001_ $$0P:(DE-HGF)0$$aUnterholzner, Jakob$$b9
000857706 7001_ $$0P:(DE-HGF)0$$aSigurdardottir, Helen L$$b10
000857706 7001_ $$0P:(DE-HGF)0$$aSpies, Marie$$b11
000857706 7001_ $$0P:(DE-HGF)0$$aSeiger, René$$b12
000857706 7001_ $$0P:(DE-HGF)0$$aKranz, Georg S$$b13
000857706 7001_ $$0P:(DE-HGF)0$$aHahn, Andreas$$b14
000857706 7001_ $$0P:(DE-HGF)0$$aMitterhauser, Markus$$b15
000857706 7001_ $$0P:(DE-HGF)0$$aWadsak, Wolfgang$$b16
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000857706 7001_ $$0P:(DE-HGF)0$$aHacker, Marcus$$b18
000857706 7001_ $$0P:(DE-HGF)0$$aKasper, Siegfried$$b19
000857706 7001_ $$00000-0003-4641-9539$$aLanzenberger, Rupert$$b20$$eCorresponding author
000857706 773__ $$0PERI:(DE-600)1483485-6$$a10.1093/cercor/bhy249$$p11$$tCerebral cortex$$v1-11$$x1460-2199$$y2019
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