Fast orienting movements to visual targets: Neural field model of dynamic gaze control

摘要

The neural machinery in the superior colliculus and the brain stem of primates is responsible for overt orienting in the form of saccadic eye movements. High-level principles of neural computing underlying saccade control such as neural mapping, population coding and processing in layered systems are applied to formulate a double-layer neural field model of the SC motor map. A key feature of this model is that short-term memory of target location and dynamic gaze control in the motor map has been realized through the nonlinear, spatio-temporal dynamics of neural populations organized in neural fields. The various activity patterns observed in the two layers of the motor map suggests specific schemes of lateral interconnections within these map layers.