Feed-Forward Segmentation of Figure-Ground and Assignment of Border-Ownership
Figure 7
Illustrations of subfields of the receptive fields of layer 3 neurons.
Each neuron receives an excitatory (+) and an inhibitory (−) input from neighboring layer 2 neurons. Depending on the combination of neighbors, 8 possible distributions of subfields are possible. Grey shading indicates part of the figural region and white regions indicate the background. One-sided border ownership can be achieved when layer 3 neurons receive excitatory input from a layer 2 neuron i.e. when it is located on the figure region, and inhibitory input from a neuron located on the background. In all other cases layer 3 neurons will be silent or inhibited. The bars/arrows next to each neuron (grey circles) indicate the response.