Studies on Information Processing Mechanisms in the Central Visual System of the Cat

摘要

The characteristics of information processing of visual neurons were investigated, including nonlinear summation and contour enhancement effects of concentric receptive fields, and neural interactions between detectors for the same or different stimulus domains. A model was proposed to explain the results of antagonistic actions between the center and surrounding regions in the concentric recptive field of lateral geniculate neurons. The response of lateral geniculate neurons with concentric receptive fields to large two-dimensional figures was investigated. The interactions between the different orientation detecting processes were investigated in the orientation sensitive neurons of the visual cortex. The neural interactions between two direction-selective processes as well as between direction and selective process were investigated in the complex type neurons, using a non-oriented textured stimulus (two-dimensional random noise pattern) and an oriented grating.