Table 1

Linear regression of the relationship between cortical excitability parameters and potential confounding factors (n = 47)
Parameter SEM βa t P
Motor Threshold
Age (years) 0.09 0.31 2.15 0.03
Short Intracortical inhibition (ratio: SICI/test stimulus)
Brazilian Portuguese Catastrophizing Scale (B-PCS) −0.005 −0.44 −3.24 0.002
Intracortical facilitation
(ratio: ICF/test stimulus)
Trait-anxiety 0.011 0.56 4.48 0.001
Cortical silent period
Trait-anxiety 0.39 −0.41 −2.95 0.005

aValue adjusted by multiple regression analysis with a stepwise forward method controlling for collinearity. The covariates included in each model were: state-trait anxiety, pain-related catastrophic thinking, depressive symptoms and age.

Vidor et al.

Vidor et al. BMC Neuroscience 2014 15:42   doi:10.1186/1471-2202-15-42

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