Network analysis of marmoset cortical connections reveals pFC and sensory clusters

A new analysis is presented of the retrograde tracer measurements of connections between anatomical areas of the marmoset cortex. The original normalisation of raw data yields the fractional link weight measure, FLNe. That is re-examined to consider other possible measures that reveal the underlying...

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Bibliographic Details
Published in:Frontiers in neuroanatomy 2024-06, Vol.18, p.1403170
Main Author: Pailthorpe, Bernard A
Format: Article
Language:English
Subjects:
cluster
connectivity
hub
marmoset
module
network
Neuroanatomy
Online Access:Get full text
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Summary:A new analysis is presented of the retrograde tracer measurements of connections between anatomical areas of the marmoset cortex. The original normalisation of raw data yields the fractional link weight measure, FLNe. That is re-examined to consider other possible measures that reveal the underlying in link weights. Predictions arising from both are used to examine network modules and hubs. With inclusion of the in weights the InfoMap algorithm identifies eight structural modules in marmoset cortex. In and out hubs and major connector nodes are identified using module assignment and participation coefficients. Time evolving network tracing around the major hubs reveals medium sized clusters in pFC, temporal, auditory and visual areas; the most tightly coupled and significant of which is in the pFC. A complementary viewpoint is provided by examining the highest traffic links in the cortical network, and reveals parallel sensory flows to pFC and via association areas to frontal areas.
ISSN:1662-5129
1662-5129
DOI:10.3389/fnana.2024.1403170