A Blueprint for the Study of the Brain's Spatiotemporal Patterns

Time-varying hierarchical core voxels disclosed by k-core percolation on dynamic inter-voxel connectivity resting-state fMRI

“…That is to say, voxels as spatial units of functional connectivity needs to be considered to have sustaining identities, impossible to be removed, merged or ignored ever. Incorporating the voxel- (28). Nervetheless, in our study, we found that spatiotemporal quanta of voxel/minute time-bin allowed the observation of time-varying changes of mental states at rest, which had been considered drifting, fluctuating, open (cannot be sequestered even in the non-activation resting state paradigm of fMRI acquisition) (29).…”

“…The copyright holder for this preprint this version posted June 26, 2022. ; https://doi.org/10.1101/2022.06.23.497413 doi: bioRxiv preprint electrical signals on electroencephalography or magnetoencephalography (28). Nervetheless, in our study, we found that spatiotemporal quanta of voxel/minute time-bin allowed the observation of time-varying changes of mental states at rest, which had been considered drifting, fluctuating, open (cannot be sequestered even in the non-activation resting state paradigm of fMRI acquisition) (29).…”

“…The heterogeneity of mental states could not be described by other methods such as introspective narratives, either self or from instrumental recordings. The correlative behavior and time-varying hierarchical constitution of core voxels remains to be understood (8,28), considering that 7 to 15-minutes observation is just one session of the individual, that static is a longer-standing dynamic which did not seem to represent simple integration of the 1-minute bins in any easy way, and that another session in another time yielded the similar or the different uppermost voxels-IC composition pattern in an individual. Individual differences of coreness k-value map on animation or stacked histogram plots on animation resided both in the unique character of the subject individual and in the session of the study of an individual.…”