Influence of Binasal and Uninasal Inhalations of Essential Oil of Abies koreana Twigs on Electroencephalographic Activity of Human

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 (µV^2)	During inhalation (µV^2)	t-test	P
AT	F4: right frontal			3.064	0.006
AB	Fp1: left prefrontal			2.117	0.048
	P3: left parietal			3.235	0.004
	P4: right parietal			2.612	0.017
ALB	P3: left parietal			2.140	0.046
AMB	P3: left parietal			2.399	0.027
	P4: right parietal			2.355	0.029
AHB	F4: right frontal			2.245	0.037
	P3: left parietal			3.196	0.005
	P4: right parietal			2.593	0.018
ASEF	T4: right temporal			−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.
difference (P < 0.05); number of subjects, 20.