Table 1.

Temporal variations (in %) in the spectral band brain wave magnitudes relative to their initial values (0~50 s), normalized to those of the overall frequency band and averaged the data measured at the two positions (F3, F4) of the participants (n = 17) who heard the strongly beating singing bowl sounds repeated six times at every 50 s for t = 50~350 s. (†: maximum change).

Time (s)		Delta Wave		Theta Wave		Beat Frequency		Alpha Wave		Beta Wave		Gamma Wave
		Changes in EEG (%)	p	Changes in EEG (%)	p	Changes in EEG (%)	p	Changes in EEG (%)	p	Changes in EEG (%)	p	Changes in EEG (%)	p
Before exp.	0~50	100	-	100	-	100	-	100	-	100	-	100	-
Experiment	50~100	93.52	0.014	103.16	0.176	163.90	0.006	103.69	0.137	98.48	0.248	87.99	0.000
	100~150	100.09	0.985	108.57	0.015	144.40	0.160	97.69	0.411	97.54	0.280	85.18	0.000
	150~200	100.37	0.933	106.85	0.037	227.66	0.006	97.57	0.533	99.16	0.579	85.53	0.000
	200~250	102.71	0.641	108.09	0.031	199.67	0.032	95.47	0.275	98.78	0.586	84.10	0.000
	250~300	109.62	0.220	116.16	0.003	251.98 †	0.021	87.40	0.003	95.19	0.067	85.65	0.006
	300~350	117.95	0.029	114.34	0.004	182.19	0.001	89.07	0.010	95.09	0.062	81.86 †	0.000
After exp.	350~400	135.18 †	0.001	117.07 †	0.002	157.06	0.049	85.28 †	0.005	93.75 †	0.012	90.41	0.047