Fig. 5
Linear regressions among TMS indices of AIH-induced enhancements in corticospinal excitability and their correlation with motor adaptation outcomes. The red text indicates statistically significant adjusted R2 values (p < 0.05), while the black text signifies insignificant values. (A) We observed a significant positive correlation between increased maximum motor-evoked potential amplitude (MEPmax) post-AIH and improvements in step length asymmetry during Adapt 1. (B) The association between elevated area under the recruitment curve post-AIH and enhanced step length asymmetry during motor adaptation did not reach statistical significance (p = 0.053). (C) We identified a significant correlation between elevated MEPmax post-AIH and augmented step time asymmetry during Adapt 1. (D). Correlations between increased area under the recruitment curve post-AIH and greater step time asymmetry during motor adaptation did not reach statistical significance (p = 0.088). (E) Elevated MEPmax after AIH exhibited a positive correlation with decreased net metabolic power during motor adaptation. (F) Heightened area under the recruitment curve post-AIH positively correlated with reduced net metabolic power during Adapt 1. Individual data points are represented in blue, and the 95% confidence interval is illustrated by the grey-shaded area.
