33. Effects of global proprioceptive resonance on resting state EEG in healthy subjects

Abstract

In the last few years Multifocal Vibration (MFV) has been evaluated as a tool to modify posture and to speed recovery after physical exercise. The aim of this study is to assess whether MFV can also modify resting state EEG. Eleven healthy subjects were included in this study. All subjects underwent a resting state EEG recording of six minutes (three with eyes closed and three minutes with eyes open) for evaluation of resting cortical rhythms, before and after one session of MFV with KEOPE-GPR. Data obtained were collapsed in four region of interest (ROIs): frontal, central, temporal and occipital. Frequency bands of interest were δ (0.5–3.5 Hz), θ (4–7.5 Hz), α 1 (8–10.5 Hz), α 2 (11–12.5 Hz), β 1 (13–19.5 Hz), and β 2 (20–30 Hz). The ratio between slow (delta + theta) and faster (alpha1 + alpha2) rhythms was evaluated using paired t -test. Subsequent statistical analysis was carried on using repeated measures ANOVA (RM-ANOVA) using time (2-levels), side (2-levels) and rhythm (6-levels) as within-subjects factors for each ROI. No statistically significant variations were observed on qEEG with eyes closed. The analysis of ratios between slow and faster frequencies after MFV identified significant variations following MFV ( p MFV can modulate oscillatory activity as observed by qEEG. The increase in alpha band observed in central regions could be related to an enhancement in mu rhythm.