Table 4.
Effect of uninasal (left nostril) inhalation of essential oil of A. koreana twigs on EEG activity in both genders.
| EEG indices | Site | Before inhalation (µV2) | During inhalation (µV2) | t-test | P value∗ |
|---|---|---|---|---|---|
| AT | F4: right frontal | 22.922 ± 2.728 | 18.246 ± 2.073 | 3.064 | 0.006 |
| AB | Fp1: left prefrontal | 15.552 ± 1.407 | 12.738 ± 1.087 | 2.117 | 0.048 |
| P3: left parietal | 19.483 ± 2.115 | 16.379 ± 1.734 | 3.235 | 0.004 | |
| P4: right parietal | 16.967 ± 1.769 | 14.437 ± 1.636 | 2.612 | 0.017 | |
| ALB | P3: left parietal | 7.634 ± 1.345 | 6.561 ± 1.086 | 2.140 | 0.046 |
| AMB | P3: left parietal | 7.981 ± 0.870 | 6.668 ± 0.742 | 2.399 | 0.027 |
| P4: right parietal | 7.086 ± 0.808 | 5.822 ± 0.635 | 2.355 | 0.029 | |
| AHB | F4: right frontal | 6.892 ± 0.646 | 6.048 ± 0.625 | 2.245 | 0.037 |
| P3: left parietal | 8.430 ± 1.061 | 7.141 ± 0.970 | 3.196 | 0.005 | |
| P4: right parietal | 7.437 ± 0.901 | 6.368 ± 0.881 | 2.593 | 0.018 | |
| ASEF | T4: right temporal | 10.106 ± 0.136 | 10.213 ± 0.133 | −2.121 | 0.047 |
AT, absolute theta; AB, absolute beta; ALB, absolute low beta; AMB, absolute mid beta; AHB, absolute high beta; ASEF, spectral edge frequency 50% of alpha.
∗Significant difference (P < 0.05); number of subjects, 20.