Abstract
Posner and Cohen (1984) and Maylor (1985) initially observed that a luminance change produces both facilitatory and inhibitory effects on subsequent detection. While Posner and Cohen claimed that the facilitatory effect was mapped in retinotopic coordinates, they showed that inhibition of return (IOR) was mapped in “environmental coordinates.” Tipper and colleagues (Tipper, Driver, & Weaver, 1991; Tipper et al., 1997; Tipper, Weaver, Jerreat, & Burak, 1994) and Abrams and Dobkin (1994b) have recently reported that IOR can be object based, but contradictory results have also been reported (Muller & von Mühlenen, 1996). Here we report six experiments showing that an uninformative peripheral cue can generate either facilitatory or inhibitory object-based effects that can tag moving objects and that can persist for several hundred milliseconds. Although the boundary conditions determining which effect will be manifest remain to be defined, the present results suggest that facilitation and inhibition are generated independently, rather than being components of the same biphasic process.
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This work was supported by US PHS Grant MH41544 to R.D.R. and by US PHS training fellowship MH19930 to T.R.
—Accepted by previous editor, Myron Braunstein
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Ro, T., Rafal, R.D. Components of reflexive visual orienting to moving objects. Perception & Psychophysics 61, 826–836 (1999). https://doi.org/10.3758/BF03206900
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DOI: https://doi.org/10.3758/BF03206900