ABSTRACT
The local ensemble of receptors corresponds to a local ensemble of preselector neurons that in a parallel manner activate an array of feature-selectors, thus building up a selector map. Each feature-selective neuron of the map is characterized by a specific set of synapses constituting its weight vector that is of a constant length. The response of a feature-selector neuron is determined by an inner product of its weight vector and the input excitation vector generated by preselectors. Because the length of the excitation vector is also of a constant value, the excitation maximum in such a feature neuron of the selector map is reached when the input excitation vector is collinear with that neuron's weight vector (Sokolov and Vaitkyavichus, 1989). The change of a local stimulus results in a modification of the receptor excitation vector and the corresponding preselector excitation vector. This change is responsible for a translocation of the excitation maximum onto another neuron of the selector map possessing a weight vector collinear with the modified excitation vector. Thus, a change of a local stimulus that remains stationary on the receptor surface results in a shift of the excitation maximum with respect to the feature selector map in a manner similar to that which occurs for somatotopic, retinotopic and tonotopic projections. The distribution of excitations of neurons on a feature-selector map constitutes a selection excitation vector with components composed from inner products of the preselector excitation vector and the weight vectors of respective neurons of the selector map.
