Table 4.

GLM analysis of the experimental effects on mu and beta ERD/ERS during perception of hand treatment action: beta ERD/ERS (13–30 Hz)

Effect	F(1,35)	P
Ethnicity	3.932	0.055
Treatment	1.600	0.214
Hemisphere	0.112	0.740
Ethnicity*Treatmenta	7.625	0.009
Ethnicity*Hemisphere	1.121	0.297
Treatment*Hemisphere	0.784	0.382
Ethnicity*Treatment*Hemisphere	0.049	0.827

Model: 2 × 2 × 2 RM ANOVA; within-subject independent variables: Ethnicity, Treatment, Hemisphere; dependent variable: ERD/ERS (mean within a time window 300–1500 ms).

^aEffect size: r = 0.428, White Pain: −0.97 ± 0.14 dB, White No-pain: −0.85 ± 0.12, Black Pain: −0.84 ± 0.14 dB, Black No-pain: −0.84 ± 0.12 dB; simple effects of Treatment: (1) White Pain vs White No-pain, F(1,35) = 4.75, P = 0.036; (2) Black Pain vs Black No-pain, F(1,35) = 0.01, P = 0.942; simple effects of Ethnicity: (1) White Pain vs Black Pain, F(1,35) = 7.77, P = 0.009; (2) White No-pain vs Black No-pain, F(1,35) = 0.01, P = 0.940.