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Published in: Neuroinformatics 3/2022

01-07-2022 | Original Article

Modelling Cortical Laminar Connectivity in the Macaque Brain

Authors: Ittai Shamir, Yaniv Assaf

Published in: Neuroinformatics | Issue 3/2022

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Abstract

In 1991, Felleman and Van Essen published their seminal study regarding hierarchical processing in the primate cerebral cortex. Their work encompassed a widescale analysis of connections reported through tracing between 35 regions in the macaque visual cortex, extending from cortical regions to the laminar level. In this work, we revisit laminar-level connectivity in the macaque brain using a whole-brain MRI-based approach. We use multimodal ex-vivo MRI imaging of the macaque brain in both white and grey matter, which are then integrated via a simple model of laminar connectivity. This model uses a granularity-based approach to define a set of rules that expands cortical connections to the laminar level. Different fiber tracking routines are then examined in order to explore the ability of our model to infer laminar connectivity. The network of macaque cortical laminar connectivity resulting from the chosen routine is then validated in the visual cortex by comparison to findings from Felleman and Van Essen with an 83% accuracy level. By using a more comprehensive definition of the cortex that addresses its heterogenous laminar composition, we can explore a new avenue of structural connectivity on the laminar level.
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Literature
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Metadata
Title
Modelling Cortical Laminar Connectivity in the Macaque Brain
Authors
Ittai Shamir
Yaniv Assaf
Publication date
01-07-2022
Publisher
Springer US
Published in
Neuroinformatics / Issue 3/2022
Print ISSN: 1539-2791
Electronic ISSN: 1559-0089
DOI
https://doi.org/10.1007/s12021-021-09539-2

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