highly significantP < 0.001
When tested separately, the contra-ipsilateral difference in the detection task was marginally significant, F 1,33 = 3.95, P = 0.055, η p 2 = 0.11, while in the discrimination task, it was highly significant, F 1,33 = 20.29, P < 0.001, η p 2 = 0.38.