1. A method for determining a weight coefficient of an artificial associative neuron synapse the weight coefficient being determined by temporal behaviour of a product of two signals, the method comprising: forming the product of said two signals and storing the temporal behaviour of the product of said two signals; and determining the weight coefficient of the synapse on the basis of the stored temporal behaviour of the product of said two signals, characterized in that the storing of the temporal behaviour of the product of said two signals is carried out in a shift register chain.