Research On Artificial Auditory Neurons Based On Biological Memristor

Auditory neurons,as powerful information processing units,play an important role in the realization of auditory perception and auditory information processing.The resistance value of the memristor can be continuously modulated by the input excitation and has potential in building neuromorphic synaptic devices and simulating brain-like perceptual functions.Biomaterials have the advantages of biocompatibility,environmental friendliness and high storage density,and the implementation of artificial auditory neurons using bio-memristor hardware is important for the development of neuromorphic perception systems.In this paper,bipolar and threshold type bio-memory devices were prepared using scindapsus aureus and starch as the main materials of the memristor dielectric layer,and the device preparation,material characterisation,electrical properties and its resistance mechanism were analysed.Based on the bipolar type amnestic device with scindapsus aureus as the dielectric layer,synaptic bionic functions such as conductance modulation,excitatory post-synaptic current,paired pulse facilitation,spike-timing-dependent plasticity and triplet spike-timing-dependent plasticity were achieved,and on this basis,velocity detection and sound localization were realized.Threshold-based memristor were fabricated using scindapsus aureus and starch as the dielectric layers respectively,and the devices have stable electrical properties.An artificial auditory neuron constructed using the thresholded scindapsus aureus memristor was used to realise the orientation detection function of the sound signal.The artificial auditory neuron was constructed using a thresholded starch-based memristor.The firing frequency of the auditory neuron increased with pulse amplitude and pulse frequency,decreased with pulse interval,and achieved functions such as spatiotemporal integration and synchronous detection.