Paper Info
Title
A computational role for bistability and traveling waves in motor cortex.
Abstract
Adaptive changes in behavior require rapid changes in brain states yet the brain must also remain stable. We investigated two neural mechanisms for evoking rapid transitions between spatiotemporal synchronization patterns of beta oscillations (13-30 Hz) in motor cortex. Cortex was modeled as a sheet of neural oscillators that were spatially coupled using a center-surround connection topology. Manipulating the inhibitory surround was found to evoke reliable transitions between synchronous oscillation patterns and traveling waves. These transitions modulated the simulated local field potential in agreement with physiological observation in humans. Intermediate levels of surround inhibition were also found to produce bistable coupling topologies that supported both waves and synchrony. State-dependent perturbation between bistable states produced very rapid transitions but were less reliable. We surmise that motor may thus state-dependent computation to achieve very rapid changes between bistable motor states when the demand for speed exceeds the demand for accuracy.
Year
DOI
Venue
2012
10.3389/fncom.2012.00067
FRONTIERS IN COMPUTATIONAL NEUROSCIENCE
Keywords
Field
DocType
motor cortex,synchrony,traveling waves,beta oscillations,bistability
Cortex (botany),Synchronization,Bistability,Oscillation,Neuroscience,Coupling,Computer science,Local field potential,Artificial intelligence,Motor cortex,Machine learning,Perturbation (astronomy)
Journal
Volume
ISSN
Citations 
6
1662-5188
6
PageRank 
References 
Authors
0.53
7
3
Name
Order
Citations
PageRank
Stewart Heitmann192.25
Pulin Gong2336.50
Michael Breakspear380754.18