3D visualization of movements can amplify motor cortex activation during subsequent motor imagery

Frontiers in Human Neuroscience
Teresa SollfrankTele Tan

Abstract

A repetitive movement practice by motor imagery (MI) can influence motor cortical excitability in the electroencephalogram (EEG). This study investigated if a realistic visualization in 3D of upper and lower limb movements can amplify motor related potentials during subsequent MI. We hypothesized that a richer sensory visualization might be more effective during instrumental conditioning, resulting in a more pronounced event related desynchronization (ERD) of the upper alpha band (10-12 Hz) over the sensorimotor cortices thereby potentially improving MI based brain-computer interface (BCI) protocols for motor rehabilitation. The results show a strong increase of the characteristic patterns of ERD of the upper alpha band components for left and right limb MI present over the sensorimotor areas in both visualization conditions. Overall, significant differences were observed as a function of visualization modality (VM; 2D vs. 3D). The largest upper alpha band power decrease was obtained during MI after a 3-dimensional visualization. In total in 12 out of 20 tasks the end-user of the 3D visualization group showed an enhanced upper alpha ERD relative to 2D VM group, with statistical significance in nine tasks.With a realistic visual...Continue Reading

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Citations

Jun 3, 2017·Computational Intelligence and Neuroscience·Ting LiBaozeng Wang
Nov 13, 2020·Journal of Neural Engineering·Aline RocFabien Lotte
Oct 31, 2020·Computers in Biology and Medicine·Jin Woo ChoiSungho Jo

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