Theory of the Relation between Human Brain Activity (MEG) and Hand Movements

  title={Theory of the Relation between Human Brain Activity (MEG) and Hand Movements},
  author={Armin Fuchs and Viktor Jirsa and J. A. Scott Kelso},
Earlier research established that spontaneous changes in human sensorimotor coordination are accompanied by qualitative changes in the spatiotemporal dynamics of neural activity measured by multisensor electroencephalography and magnetoencephalography. More recent research has demonstrated that a robust relation exists between brain activity and the movement profile produced. In particular, brain activity has been shown to correlate strongly with movement velocity independent of movement… 

Figures from this paper

Spatiotemporal forward solution of the EEG and MEG using network modeling

A methodological framework is developed, which defines the spatiotemporal dynamics of neural ensembles, the neural field, on a sphere in three dimensions, which allows for the calculation of the electric potentials on the surface of the skull and the magnetic fields outside the skull to be measured by EEG and MEG.

Neural Field Dynamics on the Folded Three-Dimensional Cortical Sheet and Its Forward EEG and MEG

A methodological framework, which defines the activity of neural ensembles, the neural field, on a sphere in three dimensions, is developed and non-trivial mappings between the multiple levels of observation are obtained which would not be predicted by inverse solution techniques.

Task-related power and coherence changes in neuromagnetic activity during visuomotor coordination

The results suggest that three important cortical oscillations play different functional roles in a visuomotor timing task, including flexion versus extension, synchronization and syncopation.

Information Processing in Brain and Behavior Displayed in Large-Scale Scalp Topographies such as EEG and MEG

Two hypotheses on the existence and persistence of mappings between the dynamics of behavioral and brain signals are formulated and a mathematical foundation for the first hypothesis is suggested by means of Volterra integral expansions and by Means of excitable systems.

Event-Related Potentials

The Event-Related Potential (ERP) is a temporal signature of macroscopic brain electrical activity related to a sensory, motor, or cognitive event and the Event-related Field (ERF) is the magnetic correlate of this activity.

Spectral changes of interhemispheric crosstalk during movement instabilities.

The timescale of beta synchrony seems to play a key role in achieving timed phase synchrony in the motor cortex and along the neural axis once event-related desynchronization-synchronization cycles cannot be build up properly, inhibition may become inadequate, resulting in a reduction of the stability of performance, which may eventually become unstable.

Stabilization of bimanual coordination due to active interhemispheric inhibition: a dynamical account

A dynamical model is derived to account for the patterns of brain activity observed during stable performance of bimanual multifrequency patterns, as well as during behavioral instabilities in the form of phase transitions between such patterns.

Neuromagnetic motor fields accompanying self-paced rhythmic finger movement at different rates

The observed rate-dependent changes in this field may contribute to known transitions in sensorimotor coordination that emerge when the frequency of coordination is increased, and is suggestive of a readiness field.

The coordination dynamics of social neuromarkers

The neuromarker landscape is found to be task-specific: synchronic paradigms of social coordination reveal medial mu, alpha and the phi complex as contributing neuromarksers, and diachronic tasks recruit alpha as well, in addition to lateral mu rhythms and the newly discovered nu and kappa rhythms whose functional significance is still unclear.

Brain coordination dynamics: True and false faces of phase synchrony and metastability




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.

Connecting Cortical and Behavioral Dynamics: Bimanual Coordination

Focusing on the cortical left-right symmetry, this work derives a bimodal description of the brain activity that is connected to behavioral dynamics and makes predictions of global features of brain dynamics during coordination tasks and test these against experimental magnetoencephalogram results.

Reconstruction of the spatio-temporal dynamics of a human magnetoencephalogram

Inverse-dynamics model eye movement control by Purkinje cells in the cerebellum

It is shown that the complex temporal pattern of the firing frequency that occurs during the ocular following response elicited by movements of a large visual scene can be reconstructed by an inverse-dynamics representation, which uses the position, velocity and acceleration of eye movements.

Computations underlying the execution of movement: a biological perspective.

Some of the mechanisms and circuitry underlying the transformation of motor plans into motor commands are described and a central feature of this transformation is a coarse map of limb postures in the premotor areas of the spinal cord.

Exploring a vibratory systems analysis of human movement production.

An al ternative approach to of localization-stemming from Bern-stein's orig inal work (1947) 1, proposes that where muscles at a joint are constrained to act as a unit, the linkage is described as a class of vibratory system with the physical and behavioral characteristics of a mass-spring.

Equilibrium-Point Control Hypothesis Examined by Measured Arm Stiffness During Multijoint Movement

The results argue against the hypothesis that the brain sends as a motor command only an equilibrium-point trajectory similar to the actual trajectory.

The coordination of arm movements: an experimentally confirmed mathematical model

  • T. FlashN. Hogan
  • Engineering
    The Journal of neuroscience : the official journal of the Society for Neuroscience
  • 1985
A mathematical model is formulated which is shown to predict both the qualitative features and the quantitative details observed experimentally in planar, multijoint arm movements, and is successful only when formulated in terms of the motion of the hand in extracorporal space.