Table 6. Student t-values
from planned contrasts testing for the presence of PPI (0 vs. 360-ms SOA) and
refractoriness (60- vs. 360-ms SOA) on each component and each lead from the
7-lead PCA.
Recording Lead |
Component |
PPIa (0- vs. 360-ms SOA) |
Refractorinessa (60- vs. 360-ms SOA |
Fz |
N19 P30 N40 P50 |
<1 <1 2.42* 3.47** |
<1 <1 1.57 2.44* |
Cz |
N19 P30 N40 P50 |
<1 <1 3.55** 6.41** |
<1 <1 3.62** 1.57 |
F8 |
N19 P30 N40 P50 |
<1 <1 3.05** <1 |
<1 <1 3.28** <1 |
T4/6 |
N19 P30 N40 P50 |
1.01 <1 <1 <1 |
1.18 <1 <1 <1 |
Masseter |
N19 P30 N40 P50 |
<1 <1 1.18 <1 |
<1 <1 <1 1.48 |
Post-auricularis |
N19 P30 N40 P50 |
1.89 <1 <1 1.76 |
1.01 <1 1.18 1.98 |
Medial frontalis |
N19 P30 N40 P50 |
1.69 3.48** 5.59** <1 |
<1 <1 4.58** 1.55 |
*p < .05. **p < .01.
adf=35.