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

Table 3

Effect of binasal 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
AA	F3: left frontal			−2.236	0.038
	P4: right parietal			−2.132	0.046
AMB	F3: left frontal			−2.359	0.029
	P4: right parietal			−2.357	0.029
AFA	P4: right parietal			−2.335	0.031
RMT	F3: left frontal			−2.249	0.037
	P4: right parietal			−2.944	0.008
RSMT	P4: right parietal			−2.357	0.029
RMB	P4: right parietal			−2.121	0.047
ASEF	P3: left parietal			−2.157	0.044
	P4: right parietal			−2.108	0.049

AA, absolute alpha; AMB, absolute mid beta; AFA, absolute fast alpha; RMT, ratio of mid beta to theta; RSMT, ratio of SMR~mid beta to theta; RMB, relative mid beta; ASEF, spectral edge frequency 50% of alpha.
difference (P < 0.05); number of subjects, 20.