The EEG signal was acquired using wireless one-electrode technology by
the ThinkGear chip. The signal was filtered and amplified through bluetooth interface,
and then displayed on human-computer interface. We determine two parameters
attention and meditation with eSense algorithms on α, β, θ, δ waves. The study survey
the variation between attention and meditation after aromatherapy treatment.
Simultaneously, use a sphygmomanometer to display the parameters of systolic
pressure, diastolic pressure and pulse for verifying the effect. After of four kinds of
aromatherapy, we search out the attention parameter had enhanced significantly using
bergamot and peppermint oil, and the effect of peppermint oil is more obvious than
bergamot oil. On the other hand, the meditation experiment using lavender and
ylang-ylang oil also has the relax effect.