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Table 3 Results of motor-evoked potentials

From: Mental imagery-induced attention modulates pain perception and cortical excitability

Mental imagery group Control group
Time Pre Post Time Pre Post
Subject Amplitude Integral Amplitude Integral Subject Amplitude Integral Amplitude Integral
Number (mV) (mV*s) (mV) (mV*s) Number (mV) (mV*s) (mV) (mV*s)
1 0.68 0.01 0.73 0.01 3 2.68 0.04 2.94 0.04
2 1.25 0.01 1.43 0.01 6 1.85 0.03 1.87 0.03
4 MD MD MD MD 7 0.85 0.01 1.42 0.01
5 1.28 0.01 1.79 0.03 9 1.28 0.01 0.64 0.01
8 0.86 0.01 0.55 0.01 14 1.19 0.01 1.56 0.02
10 1.46 0.02 1.80 0.03 15 1.58 0.02 1.34 0.02
11 1.51 0.02 1.60 0.02 16 1.62 0.02 1.53 0.02
12 1.67 0.03 1.60 0.02 17 1.18 0.02 1.62 0.03
13 1.16 0.02 0.73 0.00 19 4.38 0.06 4.04 0.05
18 1.07 0.02 0.66 0.01 21 0.84 0.01 0.57 0.01
20 2.78 0.04 2.42 0.03 22 1.76 0.02 1.31 0.01
24 1.72 0.02 1.54 0.02 23 3.77 0.06 3.29 0.05
25 0.70 0.01 0.64 0.01 27 0.20 0.00 0.80 0.01
26 3.63 0.06 3.43 0.05 28 1.28 0.01 1.18 0.01
29 1.14 0.02 0.86 0.01 30 1.06 0.01 0.81 0.01
Mean 1.49 0.02 1.41 0.02 Mean 1.70 0.02 1.66 0.02
SD 0.81 0.01 0.81 0.01 SD 1.12 0.02 1.01 0.02
  1. Baseline values did not differ between groups: MEP amplitudes: t-test: p = 0.597 (mental imagery group: mean: 1.493 mV ± 0.809 mV; controls: mean: 1.700 mV ± 1.117 mV); MEP integral: t-test: p = 0.816 (mental imagery group: mean: 0.0214 mV*s ± 0.0141 mV*s; controls: mean: 0.0193 mV*s ±0.0127 mV*s).
  2. Mean and standard deviation of MEP amplitudes and integral before and after the intervention in both groups (MD = missing data).