Repetitive sensorimotor mu-alpha phase-targeted afferent stimulation produces no phase-dependent plasticity related changes in somatosensory evoked potentials or sensory thresholds
Fig 2
Somatosensory evoked potentials (SEP).
(A) The grand average SEP waveform across all subjects (n = 16), extracted from the N20 and P25 clusters, respectively. (B) Grand average topographies calculated from the individual time-locked averages time series +/- 2 ms with respect to each individual subject’s N20 and P25 peak, respectively. (C) Comparisons of N20 and P25 voltage values pre- and post-intervention, where the left-hand side of the violins represent the pre-intervention and the right-hand side the post-intervention for a given condition. (D) Comparisons of the N20 and P25 amplitudes before (SEPpre) vs. after (SEPpost) the EEG-triggered PES intervention expressed in percent change of SEPpost from SEPpre. For both C and D, the outer shape of the violin represents the kernel density estimation, and gray dots within the violins represent individual subject averages per condition. Within each violin plot a box plot is provided (marking with its upper and lower border the 25% and 75% percentiles), with white circles representing the condition median, horizontal gray lines representing the condition mean, and vertical bars extending from there an additional 1.5 times the interquartile range.