“…In the present behavioral indices, worse performance (hits, RTs) may reflect a decrease in attentional resources to discriminate a feature (shape) at the attended location according to attention-spreading (e.g., Baylis & Driver, 1992;Driver & Baylis, 1989;Kramer & Jacobson, 1991;Richard, Lee, & Vecera, 2008), and the present results indicate that attention spread for perceptually-connected objects by amodal completion as well as physically-connected objects. This is consistent with a notion that has been suggested in extensive behavioral studies, i.e., attention selects a perceptually unitary object after amodal completion, in cueing paradigms (Moore & Fulton, 2005;Moore, Yantis, & Vaughan, 1998;Pratt & Sekuler, 2001; but see Haimson & Behrmann, 2001), visual search tasks (He & Nakayama, 1992;Rensink & Enns, 1998), divided-attention tasks (Behrmann, Zemel, & Mozer, 1998;Zemel, Behrmann, Mozer, & Bavelier, 2002), the inhibition of return (Yi, Kim, & Chun, 2003), and for chimpanzees (Ushitani, Imura, & Tomonaga, 2010).…”