Table 1.

The details of subjects.

Subject number	Age	Sex	Handedness	Corrected visual acuity	Former experimental experience
1	23	Male	Right	0.8/0.8	Yes
2	22	Female	Right	0.9/0.8	No
3	32	Male	Right	1/0.9	No
4	22	Male	Right	1/1.2	No
5	25	Male	Right	0.8/0.9	Yes
6	25	Male	Left	0.8/0.8	Yes
7	25	Male	Right	1/1	No
8	26	Male	Right	0.9/0.9	No
9	26	Male	Right	1/0.9	No