Table 2. The lateralization index (LI) was calculated using the bootstrap method by comparing the difference maps of temporal lobe activation (MP vs. YC, EP vs. YC).
| Group diff | 350 Hz | 700 Hz | 1.5 kHz | 3 kHz | 8 kHz | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| mean | W mean | Mean | W mean | mean | W mean | mean | W mean | mean | W mean | |
| MP>YC: LI | 0.065 | 0.014 | -0.15 | -0.14 | -0.34 | -0.47 | -0.28 | -0.27 | -0.34 | -0.4 |
| std | 0.17 | 0.09 | 0.22 | 0.14 | 0.1 | |||||
| lowest | -0.22 | -0.27 | -0.79 | -0.47 | -0.52 | |||||
| highest | 0.5 | 0.17 | -0.09 | 0.19 | -0.15 | |||||
| EP>YC: LI | -0.26 | -0.44 | -0.34 | -0.5 | -0.41 | -0.55 | -0.44 | -0.58 | -0.43 | -0.6 |
| std | 0.34 | 0.29 | 0.12 | 0.24 | 0.29 | |||||
| lowest | -0.92 | -0.92 | -0.88 | -0.81 | -0.9 | |||||
| highest | 0.04 | -0.05 | -0.11 | -0.16 | -0.1 | |||||
Comparison of MP and EP showed no difference. LI results are shown as mean and weighted mean values for each stimulation frequency. Negative values demonstrate right laterality.