Reinforcement Learning of Linking and Tracing Contours in Recurrent Neural Networks.

ABSTRACT: The processing of a visual stimulus can be subdivided into a number of stages. Upon stimulus presentation there is an early phase of feedforward processing where the visual information is propagated from lower to higher visual areas for the extraction of basic and complex stimulus features. This is followed by a later phase where horizontal connections within areas and feedback connections from higher areas back to lower areas come into play. In this later phase, image elements that are behaviorally relevant are grouped by Gestalt grouping rules and are labeled in the cortex with enhanced neuronal activity (object-based attention in psychology). Recent neurophysiological studies revealed that reward-based learning influences these recurrent grouping processes, but it is not well understood

SUBMITTER: Brosch T 

PROVIDER: S-EPMC4619762 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature