Thu, 21 Aug 2008 14:16:43 BST CiteULike: sternshein's library [215 articles] http://www.citeulike.org/user/sternshein/article/2667697 CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/sternshein/article/2667697 <i>Neuron, Vol. 58, No. 1. (10 April 2008), pp. 15-25.</i><br /><br />Summary Where we allocate our visual spatial attention depends upon a continual competition between internally generated goals and external distractions. Recently it was shown that single neurons in the macaque lateral intraparietal area (LIP) can predict the amount of time a distractor can shift the locus of spatial attention away from a goal. We propose that this remarkable dynamical correspondence between single neurons and attention can be explained by a network model in which generically high-dimensional firing-rate vectors rapidly decay to a single mode. We find direct experimental evidence for this model, not only in the original attentional task, but also in a very different task involving perceptual decision making. These results confirm a theoretical prediction that slowly varying activity patterns are proportional to spontaneous activity, pose constraints on models of persistent activity, and suggest a network mechanism for the emergence of robust behavioral timing from heterogeneous neuronal populations. One-Dimensional Dynamics of Attention and Decision Making in LIP Surya Ganguli James Bisley Jamie Roitman Michael Shadlen Michael Goldberg Kenneth Miller doi:10.1016/j.neuron.2008.01.038 Neuron, Vol. 58, No. 1. (10 April 2008), pp. 15-25. 2008-04-14T13:04:51-00:00 2008 Neuron 58 1 15 25 arash heather kristina modeling nichola shiva