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Journal Article

Short association fibres form topographic sheets in the human V1–V2 processing stream

MPS-Authors
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Attar,  Fakhereh Movahedian       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Institute for Anatomy I, Medical Faculty & University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany;
Institute of Neuroscience and Medicine (INM-1), Research Centre Jülich, Jülich, Germany;

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Kirilina,  Evgeniya       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Chaimow,  Denis       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Haenelt,  Daniel       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;
International Max Planck Research School on Neuroscience of Communication: Function, Structure, and Plasticity, Leipzig, Germany;

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Edwards,  Luke       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Pine,  Kerrin       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Jäger,  Carsten       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Paul Flechsig Institute, Center of Neuropathology and Brain Research, University of Leipzig, Leipzig, Germany;

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Trampel,  Robert       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Mohammadi,  Siawoosh       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany;

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Weiskopf,  Nikolaus       
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Felix Bloch Institute for Solid State Physics, Faculty of Physics and Earth System Sciences, Leipzig University, Leipzig, Germany;
Wellcome Centre for Human Neuroimaging, Institute of Neurology, University College London, London, United Kingdom;

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Fulltext (public)

Attar_2025.pdf
(Publisher version), 18MB

Supplementary Material (public)

Attar_2025_Suppl.pdf
(Supplementary material), 34MB

Citation

Attar, F. M., Kirilina, E., Chaimow, D., Haenelt, D., Schneider, C., Edwards, L., et al. (2025). Short association fibres form topographic sheets in the human V1–V2 processing stream. Imaging Neuroscience, 3: imag_a_00498. doi:doi.org/10.1162/imag_a_00498.


Cite as: https://hdl.handle.net/21.11116/0000-0010-F0D9-A
Abstract
Despite the importance of short association fibres (SAF) for human brain function, their structures remain understudied. It is not known how SAF are organised across the brain, and how consistent their geometries and locations are across individuals. To address this gap, we mapped the precise structures of SAF in the primary (V1) and secondary (V2) visual cortex in a group of participants in vivo and a post mortem specimen. We assessed the consistency of SAF geometries and their expected structural and functional topography using probabilistic tractography on sub-millimetre-resolution diffusion-weighted MRI combined with functional MRI retinotopic maps in vivo. We found that dense SAF connected V1 and V2, forming sheet structures with retinotopic topography and bearing consistent geometries that resembled the local V1–V2 cortical folding. In vivo findings were corroborated by the robust and fine-grained post mortem reference. Our in vivo approach provides important insights into SAF organisation and could be applied to studies across species on cortical and SAF reorganisation and support neuronavigation.