“…Accordingly, it has been demonstrated that the effect of spatial attention can be significantly increased when one of two stimuli, rather than a single stimulus, is attended (Lavie, 1995;Luck, Chelazzi, Hillyard, & Desimone, 1997). Furthermore, the contrast-decrement detection task of our study is known to strongly modulate attention (Braun, 1994;Zenger-Landolt & Heeger, 2003). The same argument can be made for Moradi et al's study, where participants were simply instructed to attend to a moving suppressor.…”