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  Layer-specific intracortical connectivity revealed with Diffusion MRI

Leuze, C., Anwander, A., Bazin, P.-L., Dhital, B., Stüber, C., Reimann, K., et al. (2014). Layer-specific intracortical connectivity revealed with Diffusion MRI. Cerebral Cortex, 24(2), 328-339. doi:10.1093/cercor/bhs311.

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Leuze_2014_Layer.pdf (Verlagsversion), 10MB
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Leuze, Christoph1, Autor           
Anwander, Alfred2, Autor           
Bazin, Pierre-Louis1, 3, Autor           
Dhital, Bibek1, Autor           
Stüber, Carsten1, Autor           
Reimann, Katja1, Autor           
Geyer, Stefan1, Autor           
Turner, Robert1, Autor           
Affiliations:
1Department Neurophysics, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634550              
2Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              
3Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_634549              

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Schlagwörter: Crossing-fiber tractography; Diffusion tensor imaging; Layer 1; Stria of Gennari; Visual cortex
 Zusammenfassung: In this work, we show for the first time that the tangential diffusion component is orientationally coherent at the human cortical surface. Using diffusion magnetic resonance imaging (dMRI), we have succeeded in tracking intracortical fiber pathways running tangentially within the cortex. In contrast with histological methods, which reveal little regarding 3-dimensional organization in the human brain, dMRI delivers additional understanding of the layer dependence of the fiber orientation. A postmortem brain block was measured at very high angular and spatial resolution. The dMRI data had adequate resolution to allow analysis of the fiber orientation within 4 notional cortical laminae. We distinguished a lamina at the cortical surface where diffusion was tangential along the surface, a lamina below the surface where diffusion was mainly radial, an internal lamina covering the Stria of Gennari, where both strong radial and tangential diffusion could be observed, and a deep lamina near the white matter, which also showed mainly radial diffusion with a few tangential compartments. The measurement of the organization of the tangential diffusion component revealed a strong orientational coherence at the cortical surface.

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Sprache(n): eng - English
 Datum: 2012-10-252014-02
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1093/cercor/bhs311
PMID: 23099298
PMC: PMC3888365
Anderer: Epub 2012
 Art des Abschluß: -

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Titel: Cerebral Cortex
Genre der Quelle: Zeitschrift
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Seiten: - Band / Heft: 24 (2) Artikelnummer: - Start- / Endseite: 328 - 339 Identifikator: ISSN: 1047-3211
CoNE: https://pure.mpg.de/cone/journals/resource/954925592440