From: Physiological responses at short distances from a parametric speaker
speaker condition | distance condition | time condition | ||||||
---|---|---|---|---|---|---|---|---|
general | parametric | 0.3m | 1.0m | task period | recovery period | |||
Δ Sympathetic nerve activity | 1.152 ± 0.161 | 1.326 ± 0.174 | 1.004 ± 0.150 | 1.047 ± 0.182 | 1.162 ± 0.306 * | 1.796 ± 0.351 | ||
ΔParasympathetic nerve activity | -0.079 ± 0.011 | -0.102 ± 0.013 | -0.090 ± 0.013 | -0.091 ± 0.012 | -0.089 ± 0.024 + | -0.113 ± 0.022 | ||
ΔHeart rate | -1.047 ± 0.318 | -0.770 ± 0.284 | -0.454 ± 0.276 | -1.363 ± 0.321 | -0.719 ± 0.492 ** | 2.170 ± 0.726 * | ||
ΔSBP | 0.389 ± 0.700 | -0.602 ± 0.631 | 1.028 ± 0.673 | -1.241 ± 0.645 | -0.702 ± 1.226 + | 0.500 ± 1.096 | ||
ΔDBP | 6.176 ± 0.774 | 6.343 ± 0.971 | 5.148 ± 0.884 | 7.370 ± 0.859 | 6.597 ± 1.397 *** | 10.500 ± 0.719 ** | ||
Δα brand ratio at Fz | -0.008 ± 0.003 | -0.002 ± 0.003 | -0.003 ± 0.003 | -0.007 ± 0.003 | 0.001 ± 0.006 | 0.014 ± 0.007 | ||
Δα brand ratio at Cz | -0.003 ± 0.003 | 0.006 ± 0.003 | -0.002 ± 0.003 | 0.003 ± 0.003 | 0.010 ± 0.006 | 0.008 ± 0.005 | ||
Δα brand ratio O1 | 0.007 ± 0.002 | 0.015 ± 0.004 | 0.009 ± 0.003 | 0.014 ± 0.003 | 0.018 ± 0.007 | 0.007 ± 0.004 |