Neural Substrates of Perceptual Enhancement by Cross-Modal Spatial Attention
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Tracking the location of visuospatial attention in a contingent capture paradigm
Journal of Cognitive Neuroscience
Difficulty of discrimination modulates attentional capture by regulating attentional focus
Journal of Cognitive Neuroscience
Inhibition of return in the covert deployment of attention: Evidence from human electrophysiology
Journal of Cognitive Neuroscience
Electrophysiological indices of target and distractor processing in visual search
Journal of Cognitive Neuroscience
Anterior intraparietal sulcus is sensitive to bottom-up attention driven by stimulus salience
Journal of Cognitive Neuroscience
On the temporal relation of top-down and bottom-up mechanisms during guidance of attention
Journal of Cognitive Neuroscience
Modelling the N2pc and its interaction with value
ICANN'07 Proceedings of the 17th international conference on Artificial neural networks
Journal of Cognitive Neuroscience
Two-layer average-to-peak ratio based saliency detection
Image Communication
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We investigated the ability of salient yet task-irrelevant stimuli to capture attention in two visual search experiments. Participants were presented with circular search arrays that contained a highly salient distractor singleton defined by color and a less salient target singleton defined by form. A component of the event-related potential called the N2pc was used to track the allocation of attention to lateralized positions in the arrays. In Experiment 1, a lateralized distractor elicited an N2pc when a concurrent target was presented on the vertical meridian and thus could not elicit lateralized components such as the N2pc. A similar distractor-elicited N2pc was found in Experiment 2, which was conducted to rule out certain voluntary search strategies. Additionally, in Experiment 2 both the distractor and the target elicited the N2pc component when the two stimuli were presented on opposite sides of the search array. Critically, the distractor-elicited N2pc preceded the target-elicited N2pc on these trials. These results demonstrate that participants shifted attention to the target only after shifting attention to the more salient but task-irrelevant distractor. This pattern of results is in line with theories of attention in which stimulus-driven control plays an integral role.