This site has been permanently archived. This is a static copy provided by the University of Southampton.

%A M W Spratling %A M H Johnson %J Journal of Cognitive Neuroscience %T A feedback model of visual attention %X Feedback connections are a prominent feature of cortical anatomy and are likely to have significant functional role in neural information processing. We present a neural network model of cortical feedback that successfully simulates neurophysiological data associated with attention. In this domain our model can be considered a more detailed, and biologically plausible, implementation of the biased competition model of attention. However, our model is more general as it can also explain a variety of other top-down processes in vision, such as figure/ground segmentation and contextual cueing. This model thus suggests that a common mechanism, involving cortical feedback pathways, is responsible for a range of phenomena and provides a unified account of currently disparate areas of research. %N 2 %P 219-237 %V 16 %D 2004 %L cogprints3542