Table 1. Tactile threshold according to 8 different SOA conditions.

SOA conditions	Minimum (RI)	Maximum (RI)	Mean (RI)	Std. deviation	Variance
Tactile only	0.53	0.83	0.67	0.08	0.01
VT300	0.55	0.84	0.65	0.08	0.01
VT100	0.37	0.83	0.60	0.12	0.01
VT50	0.39	0.80	0.59	0.13	0.02
Sync	0.36	0.94	0.61	0.14	0.02
TV50	0.46	0.84	0.62	0.11	0.01
TV100	0.45	0.98	0.63	0.15	0.02
TV300	0.52	0.83	0.66	0.11	0.01

*Relative Intensity (RI) was used for threshold measure.