Synaptic rectification model equivalent to the correlation-type movement detector.
Neural models which are equivalent to the correlation-type movement detector are described. The models involve contrast-coding channels which comprise bandpass linear filters followed by synaptic retifiers. Linear, one-directional lateral interactions are assumed among the contrast-coding channels. Synaptic rectifiers convert linear spatial interaction into a multiplication-like (quadratic) interaction, which is the core of the correlation-type movement detector. One of the neural models (E-I model) well approximates the correlation model in both time-averaged and dynamic (instantaneous) responses. Possible applicability of the model to movement detection by insects is discussed.
Mizunami
M
M
Department of Biology, Faculty of Science, Kyushu University, Fukuoka, Japan.
D000818:Animals; D003491:Cybernetics; D006801:Humans; D007313:Insecta / Q000502:physiology; D008959:Models, Neurological; D009038:Motion; D013569:Synapses / Q000502:physiology; D009435:Synaptic Transmission / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*