Because the visual system cannot process all of the objects, colors, and features present in a visual scene, visual attention allows some visual stimuli to be selected and processed over others. Most research on visual attention has focused on spatial or location-based attention, in which the locations occupied by stimuli are selected for further processing. Recent research, however, has demonstrated the importance of objects in organizing (or segregating) visual scenes and guiding attentional selection. Because of the long history of spatial (...) attention research, theories of spatial attention are more mature than theories of other visual processes, such as object segregation and object attention. In the present paper, I outline a biased competition account of object segregation and attention, following similar accounts that have been developed for spatial attention (Desimone and Duncan, 1995). In my biased competition account, I seek to understand how some objects can be segregated and selected over other objects in a complex visual scene. Under this account, there are two sources of visual information that allow an object to be processed over other objects: bottom-up information carried by the physical stimulus and top-down information based on an observer's goals. I use the biased competition account to combine many diverse findings from the object segregation and attention literatures into a common framework. (shrink)

One of the most vigorously debated issues in attention labs concerns the nature of the coupling between the sensory-motor system and covert spatial attention. Proponents of the Premotor Theory of Attention (PToA) claim that attention should be accounted for in terms of motor preparation for goal-directed actions such as eye or hand movements. For others, it is a supramodal psychological entity that is independent of our sensorimotor machinery. Both parties also seek to articulate this controversy in terms of cognitive science (...) as a question of whether attention is embodied or disembodied cognition. The PToA is thought to advocate the embodiment of attention. We, however, are inclined to think that a more nuanced view of this conceptual framework is needed to yield some insights into how radical it actually is in terms of embodied cognition (EC). We argue that PToA still seems to bear some features of weak embodiment. Yet we suggest that it has the potential to build a stronger concept of attention as EC, but somewhat paradoxically this would require giving attention deflationary treatment and reconstructing it in other terms. We propose that the notion of pre-reflective intentionality might serve as an inspiration to this end. (shrink)

The concept of attention is defined by multiple inconsistent metaphors that scientists use to identify relevant phenomena, frame hypotheses, construct experiments, and interpret data. (1) The Filter metaphor shapes debates about partial vs. complete filtering, early vs. late selection, and information filtering vs. enhancement. (2) The Spotlight metaphor raises the issue of space‐ vs. object‐based selection, and it guides research on the size, shape, and movement of the attentional focus. (3) The Spotlight‐in‐the‐Brain metaphor is frequently used to interpret imaging studies (...) of attention. (4) The debate between supramodal and pre‐motor theories of attention replays the dichotomy between the Spotlight and the Vision metaphors of attention. Our analysis reveals the central role of metaphor in scientific theory and research on attention, exposes hidden assumptions behind various research strategies, and shows the need for flexibility in the use of current metaphors. (shrink)

Change blindness provides a new technique for mapping visual attention with unprecedented spatial and temporal resolution. Change blindness can occur when a brief full‐field blank interferes with the detection of changes in a scene that occur during the blank. This interference can be overcome by attending to the location of a change. Because changes are detected at attended locations, but not at unattended locations, detection accuracy provides an indirect measure of the distribution of visual attention. The likelihood of detecting a (...) new element in a scene provides a measure of the occurrence of attention at that element's location. Potential new directions, advantages, and problems with this method are considered. (shrink)

The Variable and Permeable Filters metaphor is presented with an explanation of its advantages over other popular metaphors in accounting for attention effects in many different research paradigms. Research from laboratories of the author and others are discussed briefly and shown to result in diverse facilitatory and inhibitory attention effects on visual perception. All of these effects are consistent with the VAP-Filters metaphor.