Organization of areal connectivity in the monkey frontoparietal network

Activity observed in biological neural networks is determined by anatomical connectivity between cortical areas. The monkey frontoparietal network facilitates cognitive functions, but the organization of its connectivity is unknown. Here, a new connectivity matrix is proposed which shows that the ne...

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Bibliographic Details
Published in:NeuroImage (Orlando, Fla.) Fla.), 2021-11, Vol.241, p.118414-118414, Article 118414
Main Authors: Conklin, Bryan D., Bressler, Steven L.
Format: Article
Language:English
Subjects:
Cognition & reasoning
Cognitive ability
Computational neuroscience
Macaque
Monkeys & apes
Network neuroscience
Neural network
Neural networks
Neurological diseases
Primates
Small-world
Synchrony
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Summary:Activity observed in biological neural networks is determined by anatomical connectivity between cortical areas. The monkey frontoparietal network facilitates cognitive functions, but the organization of its connectivity is unknown. Here, a new connectivity matrix is proposed which shows that the network utilizes a small-world architecture and the 3-node M9 motif. Its areas exhibit relatively homogeneous connectivity with no suggestion of the hubs seen in scale-free networks. Crucially, its M9 dynamical relay motif is optimally arranged for near-zero and non-zero phase synchrony to arise in support of cognition, serving as a candidate topological mechanism for previously reported findings. These results can serve as a benchmark to be used in the treatment of neurological disorders where the types of cognition the frontoparietal network supports are impaired.
ISSN:1053-8119
1095-9572
DOI:10.1016/j.neuroimage.2021.118414