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

Table 1

EEG power spectrum indicators used in this study.

S. number	Analysis; Indicators	The full name of the EEG power spectrum indicators	Wavelength range (Hz)
1	AT	Absolute theta	4~8
2	AA	Absolute alpha	8~13
3	AB	Absolute beta	13~30
4	AG	Absolute gamma	30~50
5	ASA	Absolute slow alpha	8~11
6	AFA	Absolute fast alpha	11~13
7	ALB	Absolute low beta	12~15
8	AMB	Absolute mid beta	15~20
9	AHB	Absolute high beta	20~30
10	RT	Relative theta	(4~8)/(4~50)
11	RA	Relative alpha	(8~13)/(4~50)
12	RB	Relative beta	(13~30)/(4~50)
13	RG	Relative gamma	(30~50)/(4~50)
14	RSA	Relative slow alpha	(8~11)/(4~50)
15	RFA	Relative fast alpha	(11~13)/(4~50)
16	RLB	Relative low beta	(12~15)/(4~50)
17	RMB	Relative mid beta	(15~20)/(4~50)
18	RHB	Relative high beta	(20~30)/(4~50)
19	RST	Ratio of SMR to theta	(12~15)/(4~8)
20	RMT	Ratio of mid beta to theta	(15~20)/(4~8)
21	RSMT	Ratio of SMR~mid beta to theta	(12~20)/(4~8)
22	RAHB	Ratio of alpha to high beta	(8~13)/(20~30)
23	SEF50	Spectral edge frequency 50%	4~50
24	SEF60	Spectral edge frequency 90%	4~50
25	ASEF	Spectral edge frequency 50% of alpha	8~13