CoCoNest: A Continuous Structural Connectivity-based Nested Family of Parcellations of the Human Cerebral Cortex

Overview

Journal Netw Neurosci

Publisher MIT Press

Specialty Neurology

Date 2024 Dec 30

PMID 39735498

Authors

Adrian Allen

Zhengwu Zhang

Andrew Nobel

Affiliations

Soon will be listed here.

Abstract

Despite the widespread exploration and availability of parcellations for the functional connectome, parcellations designed for the structural connectome are comparatively limited. Current research suggests that there may be no single "correct" parcellation and that the human brain is intrinsically a multiresolution entity. In this work, we propose the Continuous Structural Connectivitity-based, Nested (CoCoNest) family of parcellations-a fully data-driven, multiresolution family of parcellations derived from structural connectome data. The CoCoNest family is created using agglomerative (bottom-up) clustering and error-complexity pruning, which strikes a balance between the complexity of each parcellation and how well it preserves patterns in vertex-level, high-resolution connectivity data. We draw on a comprehensive battery of internal and external evaluation metrics to show that the CoCoNest family is competitive with or outperforms widely used parcellations in the literature. Additionally, we show how the CoCoNest family can serve as an exploratory tool for researchers to investigate the multiresolution organization of the structural connectome.

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