Evidence for increased parallel information transmission in human brain networks compared to macaques and male mice

Alessandra Griffa (), Mathieu Mach, Julien Dedelley, Daniel Gutierrez-Barragan, Alessandro Gozzi, Gilles Allali, Joanes Grandjean, Dimitri Ville and Enrico Amico ()
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Alessandra Griffa: Lausanne University Hospital and University of Lausanne
Mathieu Mach: École Polytechnique Fédérale De Lausanne (EPFL)
Julien Dedelley: École Polytechnique Fédérale De Lausanne (EPFL)
Daniel Gutierrez-Barragan: Functional Neuroimaging Laboratory, Center for Neuroscience and Cognitive systems, Istituto Italiano di Tecnologia
Alessandro Gozzi: Functional Neuroimaging Laboratory, Center for Neuroscience and Cognitive systems, Istituto Italiano di Tecnologia
Gilles Allali: Lausanne University Hospital and University of Lausanne
Joanes Grandjean: Radboud University Medical Center
Dimitri Ville: École Polytechnique Fédérale De Lausanne (EPFL)
Enrico Amico: École Polytechnique Fédérale De Lausanne (EPFL)

Nature Communications, 2023, vol. 14, issue 1, 1-15

Abstract: Abstract Brain communication, defined as information transmission through white-matter connections, is at the foundation of the brain’s computational capacities that subtend almost all aspects of behavior: from sensory perception shared across mammalian species, to complex cognitive functions in humans. How did communication strategies in macroscale brain networks adapt across evolution to accomplish increasingly complex functions? By applying a graph- and information-theory approach to assess information-related pathways in male mouse, macaque and human brains, we show a brain communication gap between selective information transmission in non-human mammals, where brain regions share information through single polysynaptic pathways, and parallel information transmission in humans, where regions share information through multiple parallel pathways. In humans, parallel transmission acts as a major connector between unimodal and transmodal systems. The layout of information-related pathways is unique to individuals across different mammalian species, pointing at the individual-level specificity of information routing architecture. Our work provides evidence that different communication patterns are tied to the evolution of mammalian brain networks.

Date: 2023
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DOI: 10.1038/s41467-023-43971-z

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