AFNI: software for analysis and visualization of functional magnetic resonance neuroimages
Computers and Biomedical Research
Connecting cortical and behavioral dynamics: bimanual coordination
Neural Computation
Egocentric and allocentric constraints in the expression of patterns of interlimb coordination
Journal of Cognitive Neuroscience
Deterministic and stochastic features of rhythmic human movement
Biological Cybernetics
Outline of a general theory of behavior and brain coordination
Neural Networks
Hi-index | 0.00 |
In coordination dynamics, rate is a nonspecific control parameter that alters the stability of behavioral patterns and leads to spontaneous pattern switching. We used fMRI in conjunction with measures of effective connectivity to investigate the neural basis of behavioral dynamics by examining two coordination patterns known to be differentially stable (synchronization and syncopation) across a range of rates (0.75 to 1.75 Hz). Activity in primary auditory and motor cortices increased linearly with rate, independent of coordination pattern. On the contrary, activity in a premotor-cerebellar circuit varied directly with the stability of the collective variable (relative phase) that specifies coordinated behavioral patterns. Connectivity between premotor and motor cortices was also modulated by the stability of the behavioral pattern indicative of greater reliance on sensorimotor integration as action becomes more variable. By establishing a critical connection between behavioral and large scale brain dynamics, these findings reveal a basic principle for the neural organization underlying coordinated action.