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Central nodes of canine functional brain networks are concentrated in the cingulate gyrus
Szabó, Dóra Janosov, Milán Czeibert, Kálmán Gácsi, Márta Kubinyi, Enikő
Szabó, Dóra
Janosov, Milán
Czeibert, Kálmán
Gácsi, Márta
Kubinyi, Enikő
Title / Series / Name
Brain Structure and Function
Publication Volume
228
Publication Issue
3-4
Pages
Editors
Keywords
Dog neuroimaging
Functional brain networks
Functional connectivity
Graph analysis
Network analysis
Resting-state fMRI
Anatomy
General Neuroscience
Histology
Functional brain networks
Functional connectivity
Graph analysis
Network analysis
Resting-state fMRI
Anatomy
General Neuroscience
Histology
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Janosov-Milan_2023-05.pdf
Adobe PDF, 2.4 MB
URI
https://hdl.handle.net/20.500.14018/29077
Abstract
Compared to the field of human fMRI, knowledge about functional networks in dogs is scarce. In this paper, we present the first anatomically-defined ROI (region of interest) based functional network map of the companion dog brain. We scanned 33 awake dogs in a “task-free condition”. Our trained subjects, similarly to humans, remain willingly motionless during scanning. Our goal is to provide a reference map with a current best estimate for the organisation of the cerebral cortex as measured by functional connectivity. The findings extend a previous spatial ICA (independent component analysis) study (Szabo et al. in Sci Rep 9(1):1.25. https://doi.org/10.1038/s41598-019-51752-2, 2019), with the current study including (1) more subjects and (2) improved scanning protocol to avoid asymmetric lateral distortions. In dogs, similarly to humans (Sacca et al. in J Neurosci Methods. https://doi.org/10.1016/j.jneumeth.2021.109084, 2021), ageing resulted in increasing framewise displacement (i.e. head motion) in the scanner. Despite the inherently different approaches between model-free ICA and model-based ROI, the resulting functional networks show a remarkable similarity. However, in the present study, we did not detect a designated auditory network. Instead, we identified two highly connected, lateralised multi-region networks extending to non-homotropic regions (Sylvian L, Sylvian R), including the respective auditory regions, together with the associative and sensorimotor cortices and the insular cortex. The attention and control networks were not split into two fully separated, dedicated networks. Overall, in dogs, fronto-parietal networks and hubs were less dominant than in humans, with the cingulate gyrus playing a central role. The current manuscript provides the first attempt to map whole-brain functional networks in dogs via a model-based approach.
Topic
Publisher
Place of Publication
Type
Journal article
Date
2023-05
Language
ISBN
Identifiers
10.1007/s00429-023-02625-y