Issues in the Coordination of Human Brain Activity and Motor Behavior

  title={Issues in the Coordination of Human Brain Activity and Motor Behavior},
  author={Armin Fuchs and Viktor Jirsa and J. A. Scott Kelso},
m t c e r o b w m We are grateful to Sanes for his comments on our work, particularly for placing it in the broader context of current neurophysiological and neuroanatomical evidence. For the most part, his remarks are well made and well taken. Here we wish to provide some further perspective and elaboration on some of the issues he raises. These fall into three main categories: strategies of investigation into the relation between the dynamics of the brain and the dynamics of behavior… 

How do neural connectivity and time delays influence bimanual coordination?

This article systematically study the dynamics of rhythmic bimanual coordination under the influence of varying connection topology as realized by callosal fibers, cortico-thalamic projections, and crossing peripheral fibers.

Structured Flows on Manifolds as guiding concepts in brain science

  • Viktor Jirsa
  • Psychology
    Selbstorganisation – ein Paradigma für die Humanwissenschaften
  • 2020
Any discussion of brain repair, rehabilitation, and functional recovery imperatively requires a working definition of “function” (Jirsa et al. 2019). If such definition is not explicitly provided,

Changes in muscle recruitment patterns during skill acquisition

It is suggested that there is considerable flexibility in the composition of muscle synergies, which is exploited by individuals during the acquisition of coordination.

Unifying Large- and Small-Scale Theories of Coordination

This unified coordination dynamics turns out to be a marriage of two well-known models of large- and small-scale coordination: the former based on statistical mechanics (Kuramoto) and the latter based on the concepts of Synergetics and nonlinear dynamics (extended Haken–Kelso–Bunz or HKB).

The Explanatory Force of Dynamical and Mathematical Models in Neuroscience: A Mechanistic Perspective*

It is demonstrated how this model-to-mechanism-mapping constraint, when satisfied, endows a model with explanatory force with respect to the phenomenon to be explained.

Connectivity and dynamics of neural information processing

This article discusses how changes in the connectivity of a neural network affect the spatiotemporal network dynamics qualitatively, or equivalently, structure and function, in the current literature on neural connectivity and dynamics.

Towards a Unified Theory of Rhythmic and Discrete Movements — Behavioral, Modeling and Imaging Results

This review traces the strategy of extending a dynamic systems account from rhythmic to non-rhythmic behavior and investigates what are the fundamental units and principles that are tuned to make up complex behavior.



Traversing Scales of Brain and Behavioral Organization II: Analysis and Reconstruction

This volume describes in detail how analysis and visualization techniques can be used to show how brain activity is related to a kinematic feature of finger movement — its velocity profile, as outlined in KFJ.

Dynamic cortical activity in the human brain reveals motor equivalence

A robust relationship between time-dependent activity in sensorimotor cortex and movement velocity is demonstrated, independent of explicit task requirements; and neural activations that are specific to task demands alone are demonstrated.

Traversing Scales of Brain and Behavioral Organization III: Theoretical Modeling

A mathematical phenomenological model was developed describing the on-going brain activity and a neurophysiologically motivated field theory of the spatiotemporal brain dynamics was elaborated which combined properties of neural ensembles, including their short- and long-range connections in the cortex, in addition to describing the interaction of functional units embedded into the neural sheet.

Plasticity and primary motor cortex.

The intrinsic horizontal neuronal connections in MI are a strong candidate substrate for map reorganization: They interconnect large regions of MI, they show activity-dependent plasticity, and they modify in association with skill learning.

Signal-dependent noise determines motor planning

This theory provides a simple and powerful unifying perspective for both eye and arm movement control and accurately predicts the trajectories of both saccades and arm movements and the speed–accuracy trade-off described by Fitt's law.

Analysis of neurophysiological brain functioning

A model-Based Analysis of Neurophysiological Brain Function and Synchronization Processes based on Dynamical Systems Theory found EEG-Detected Episodes of Low-Dimensional Self-Organized Cortical Activity and the Concept of a Brain Attractor to be correlates with brain function.

Stimulus-Response vs. Stimulus-Manipulandum compatibility in rhythmic coordination of oscillatory movements

In 3 experiments, participants matched the rotations of a unimanually grasped wheel to a visual oscillation. Two coordination modes were studied: in-phase coordination (no phase difference between

On the nature of human interlimb coordination.

This work has shown that when subjects perform two-handed movements to targets of widely disparate difficulty they do so simultaneously, and that the brain produces simultaneity of action not by controlling each limb independently, but by organizing functional groupings of muscles that are constrained to act as a single unit.

A comparison of intra- and interpersonal interlimb coordination: coordination breakdowns and coupling strength.

Intra- and interpersonal interlimb coordination of pendulums swung from the wrist was investigated and the properties observed were those predicted by a dynamical model of rhythmic coordination that considers the coordinated limbs coupled to be nonlinear oscillators.

Phase transitions and critical behavior in human bimanual coordination.

  • J. Kelso
  • Physics
    The American journal of physiology
  • 1984
Conditions that give rise to phase shifts among the limbs when an animal changes gait are poorly understood and Coordinated shifts appear to arise because of continuous scaling influences that render the existing mode unstable.