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Table 4 Correlations between ERD and the characteristics and impairments of ALS patients

From: The correlation between motor impairments and event-related desynchronization during motor imagery in ALS patients

   Lt hand imagery Rt hand imagery
   ERD at C3 ERD at C4 ERD at C3 ERD at C4
Age ρ 0.28 0.25 0.26 0.40
  p value 0.51 0.55 0.53 0.33
Disease duration ρ 0.94 0.93 0.80 0.55
  p value 0.00 0.00 0.02 0.16
Lt U/E MMT ρ 0.43 0.54 0.66 0.18
  p value 0.29 0.17 0.07 0.67
Rt U/E MMT ρ 0.05 0.11 0.47 0.10
  p value 0.91 0.79 0.24 0.82
Bulbar scale ρ -0.74 -0.83 -0.99 -0.71
  p value 0.03 0.01 0.00 0.05
ADL (limb scale) ρ -0.46 -0.32 -0.06 -0.49
  p value 0.26 0.43 0.89 0.22
Significant results are highlighted in bold (Spearman correlation coefficient)
  1. Abbreviations: U/E MMT, upper extremity MMT.