A Recurrent Model of the Interaction Between Prefrontal and Inferotemporal Cortex in Delay Tasks
Alfonso Renart, Néstor Parga, Edmund T. Rolls · 1999
A very simple model of two reciprocally connected attractor neural networks is studied analytically in situations similar to those encountered in delay match-to-sample tasks with intervening stimuli and in tasks of memory guided attention. The model qualitatively reproduces many of the experimental data on these types of tasks and provides a framework for the understanding of the experimental observations in the context of the attractor neural network scenario. 1 Introduction Working memory is usually defined as the capability to actively hold information in memory for short periods of time. In primates, visual working memory is usually studied in experiments in which, after the presentation of a given visual stimulus, the monkey has to withhold its response during a certain delay period in which no specific visual stimulus is shown. After the delay, another stimulus is presented and the monkey has to make a response which depends on the interaction between the two stimuli. In ...