| Affiliation: | (1) Wales Institute for Cognitive Neuroscience, Department of Psychology, Swansea University, Swansea, SA2 8PP, Wales, UK;(2) SR Research, Mississauga, Canada;(3) Wales Institute for Cognitive Neuroscience, School of Psychology, Bangor University, Bangor, Wales, UK |
| Abstract: | Recently, Vecera, Behrmann, and McGoldrick (2000), using a divided-attention task, reported that targets are detected more accurately when they occur on the same structural part of an object, suggesting that attention can be directed toward object-internal features. We present converging evidence using the object-based inhibition of return (IOR) paradigm as an implicit measure of selection. The results show that IOR is attenuated when cues and targets appear on the same part of an object relative to when they are separated by a part boundary. These findings suggest that object-based mechanisms of selection can operate over shape representations that make explicit information about objectinternal structure. |
