Small variation in dynamic functional connectivity in cerebellar networks

Brain networks can be defined and explored through their connectivity. Here, we analyzed the relationship between structural connectivity (SC) across 2,514 regions that cover entire brain brainstem, dynamic functional (DFC). To do so, focused on a combination of two metrics: first assesses degree SC-DFC similarity -i.e. extent to which correlations explained by pathways-; second is intrinsic variability DFC over time. Overall, found cerebellar have smaller than other in brain. Moreover, internal structure cerebellum could clearly divided distinct posterior anterior parts, latter also connected brainstem. The mechanism maintain small part consistent with another our findings, namely, this exhibits highest relative studied, i.e. constrains variation dynamics. By contrast, but it has lowest similarity, suggesting different at play. Because connects regulates sleep cycles, cardiac respiratory functioning, suggest such critical functionality drives low DFC. detected expands current knowledge networks, are extremely rich complex, participating wide range cognitive functions, from movement control coordination executive function or emotional regulation. association suggests differentiated computational principles applied as opposed structures, cerebral cortex.