title: The modulation of spatial congruency by object-based attention: analysing the "locus" of the modulation.
abstract: Earlier studies have demonstrated that spatial cueing differentially reduces stimulus-stimulus congruency (e.g., spatial Stroop) interference but not stimulus-response congruency (e.g., Simon; e.g., Lupiáñez & Funes, 2005). This spatial cueing modulation over spatial Stroop seems to be entirely attributable to object-based attention (e.g., Luo, Lupiáñez, Funes, & Fu, 2010). In the present study, two experiments were conducted to further explore whether the cueing modulation of spatial Stroop is object based and/or space based and to analyse the "locus" of this modulation. In Experiment 1, we found that the cueing modulation over spatial Stroop is entirely object based, independent of stimulus-response congruency. In Experiment 2, we observed that the modulation of object-based attention over the spatial Stroop only occurred at a short cue-target interval (i.e., stimulus onset asynchrony; SOA), whereas the stimulus-response congruency effect was not modulated either by object-based or by location-based attentional cueing. The overall pattern of results suggests that the spatial cueing modulation over spatial Stroop arises from object-based attention and occurs at the perceptual stage of processing.
authors.affiliation: State Key Laboratory of Brain and Cognitive Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
authors.forename: Chunming
authors.initials: C
authors.lastname: Luo
authors.forename: Juan
authors.initials: J
authors.lastname: Lupiáñez
authors.forename: María Jesús
authors.initials: MJ
authors.lastname: Funes
authors.forename: Xiaolan
authors.initials: X
authors.lastname: Fu
mesh_terms: D001288:Attention; D003463:Cues; D005260:Female; D006801:Humans; D008297:Male; D011930:Reaction Time; D013028:Space Perception; D014796:Visual Perception; D055815:Young Adult