Disclosed are a unit, device and method for simulating a neurone and neuronal synapse of a biont based on a chalcogenide compound. The unit comprises a first electrode layer, a functional material layer and a second electrode layer. When simulating a neurone, a device accepts the stimulation of one or more electrical pulses, the resistance of the functional material layer changes to a low impedance state from a high impedance state, and the simulated neurone changes to an excited state from a resting state, so that the functions of threshold value excitation and energy accumulation excitation are achieved; when simulating a neuronal synapse, the electrical conductance of the functional material layer of the device changes gradually according to input signals, so as to achieve the function of the weighting adjustment of the synapse; and the synapse weighting thereof is changed according to the time difference between signals input at the two ends, so as to achieve the function of spike timing-dependent synapse plasticity (STDP). The present invention can provide basic components forming an artificial neural network.
UNIT, DEVICE AND METHOD FOR SIMULATING NEURONE AND NEURONAL SYNAPSE OF BIONT