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Coordinative task difficulty and behavioural errors are associated with increased long-range beta band

L M Rueda-Delgado1, E Solesio-Jofre2, D Mantini3

  • 1KU Leuven, Movement Control and Neuroplasticity Research Group, Group Biomedical Sciences, Tervuurse Vest 101, 3001 Leuven, Belgium.

Neuroimage
|October 25, 2016
PubMed
Summary
This summary is machine-generated.

Neural synchronization within the motor network changes with task difficulty during bimanual coordination. This functional connectivity modulation, particularly between sensorimotor cortices, is linked to performance errors.

Keywords:
Beta band synchronizationBimanual coordinationExact low-resolution tomography analysis (eLORETA)Finite element modelling (FEM)Partial least squares (PLS)Visuomotor integration

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Area of Science:

  • Neuroscience
  • Motor Control
  • Cognitive Neuroscience

Background:

  • Bimanual coordination involves complex neural networks with well-documented local activity changes.
  • However, the functional connectivity within these networks and its modulation by task complexity remain less understood.

Purpose of the Study:

  • To investigate how neural network connectivity changes with task difficulty during bimanual coordination.
  • To explore the relationship between functional connectivity and performance errors in a bimanual visuomotor task.

Main Methods:

  • High-density electroencephalography (EEG) was used to assess neural activity in the beta frequency band (~15-30Hz).
  • Phase-based connectivity was estimated between seven regions of interest, including frontal and parietal areas, using reconstructed individual source activity.
  • Partial least squares analysis was employed to examine connectivity modulation and its correlation with task difficulty and errors.

Main Results:

  • Functional connectivity within the motor network significantly modulated with increasing task difficulty.
  • Connectivity, particularly between sensorimotor cortices, showed significant correlations with performance errors.
  • Long-range synchronization appears crucial for managing increased demands in bimanual coordination tasks.

Conclusions:

  • Modulation of long-range neural synchronization is essential for adapting to varying task demands in bimanual coordination.
  • Understanding these connectivity dynamics offers insights into motor control and potential mechanisms underlying performance deficits.