| n = 9 | Heart rate (bpm) | Tidal volume (pF) | Muscle contractures (no. of peaks) | |
| M. Temporalis | M. Cleidomastoideus | |||
| Lavender | −5% (**) | −5% (***) | −27% | −30% (*) |
| Vetiver | −7% (***) | −6% (*) | −17% | −24% |
| Spikenard | −5% (*) | −4% (**) | −33% (**) | −20% |
| Roman Chamomile | −5% (***) |
| −39% (***) | −34% (*) |