
pmid: 29665711
Numerous studies have identified several large-scale networks within the brain of healthy individuals, some of which have been attributed to ongoing mental activity during the wakeful resting state. While engaged during specific resting-state functional magnetic resonance imaging (fMRI) paradigms, it remains unclear as to whether traditional block-design simple movement fMRI experiments significantly influence these mode networks or other areas. Using blood-oxygen level-dependent fMRI, we characterized the pattern of functional connectivity in healthy subjects during a resting-state paradigm and compared this with the same resting-state analysis performed on motor task data residual time courses after regressing out the task paradigm. Using seed-voxel analysis to define the default mode network, the executive control network (ECN), and sensorimotor, auditory, and visual networks, the resting-state analysis of the residual time courses demonstrated reduced functional connectivity in the motor network and reduced connectivity between the insula and the ECN compared with the standard resting-state data sets. Overall, performance of simple self-directed motor tasks does little to change the resting-state functional connectivity across the brain, especially in nonmotor areas. This would suggest that previously acquired fMRI studies incorporating simple block-design motor tasks could be mined retrospectively for assessment of the resting-state connectivity.
Adult, Male, Brain Mapping, Movement, Rest, Brain, Middle Aged, Magnetic Resonance Imaging, Healthy Volunteers, Oxygen, Neural Pathways, Image Processing, Computer-Assisted, Cluster Analysis, Humans, Female
Adult, Male, Brain Mapping, Movement, Rest, Brain, Middle Aged, Magnetic Resonance Imaging, Healthy Volunteers, Oxygen, Neural Pathways, Image Processing, Computer-Assisted, Cluster Analysis, Humans, Female
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 16 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
