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Motor cortical beta oscillatory power (Cz) during reactive balance responses. Group level event-related spectral perturbation (ERSP) in the beta frequency range (13–30 Hz). (A) ERSP in two exemplary individuals with higher (B) and lower (C) miniBEST score. Time course of beta power response across individuals. (D) Beta power increased from pre-(27 ± 2 dB) to post-perturbation (100–500 ms; 35 ± 5 dB; *p < 0.0001) (E).
