Enhanced human sensorimotor integration via self-modulation of the somatosensory activity
Seitaro Iwama, Takamasa Ueno, Tatsuro Fujimaki, Junichi Ushiba
TL;DR
This study shows that neurofeedback training can improve human sensorimotor performance by modulating brain activity in the somatosensory cortex.
Contribution
The study demonstrates that short-term neurofeedback training induces functional reorganization in the somatosensory cortex.
Findings
EEG neurofeedback improved self-modulation of SM1 neural oscillations within 30 minutes.
S1 reorganization was confirmed by increased SEP amplitude.
Improved touch-typing shows neurofeedback’s role in S1 reorganization for skill enhancement.
Abstract
Motor performance improvement through self-modulation of brain activity has been demonstrated through neurofeedback. However, the sensorimotor plasticity induced through the training remains unclear. Here, we combined individually tailored closed-loop neurofeedback, neurophysiology, and behavioral assessment to characterize how the training can modulate the somatosensory system and improve performance. The real-time neurofeedback of human electroencephalogram (EEG) signals enhanced participants’ self-modulation ability of intrinsic neural oscillations in the primary somatosensory cortex (S1) within 30 min. Further, the short-term reorganization in S1 was corroborated by the post-training changes in somatosensory evoked potential (SEP) amplitude of the early component from S1. Meanwhile those derived from peripheral and spinal sensory fibers were maintained (N9 and N13 components),…
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Taxonomy
TopicsMotor Control and Adaptation · Muscle activation and electromyography studies · EEG and Brain-Computer Interfaces