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Author

Adrien D’hollande

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Open access Aug 2026

A minimal model of working memory in neural systems and neuromorphic circuits

This work introduces their symmetric counterpart by replacing adaptation with slow self-excitation, motivated by intrinsic calcium-mediated membrane currents, and derives and validate a mean-field neural mass model that remains stable while retaining working-memory functionality.

D. Depannemaecker, Adrien D’hollande, G. Casagrande et al. · 0 citations
Open access Aug 2026

Bio-inspired minimal hardware implementation of spike-time dependent plasticity for intelligent spiking neural networks

We introduce a hardware circuit model that implements spike-time dependent plasticity (STDP) to endow spiking neural networks with learning capabilities. Our circuit model is characterized as both minimal and bio-inspired, due to its simplicity and to a novel active dendrite compartment that mimics the synaptic potentiation mechanism. The active dendrite consists of an integrate-and-fire stage which produces a train of pulses whose number is inversely related to the timing between pre- and post-synaptic spikes. The dendrite pulses modulate in a reliable manner the synaptic efficacy (conductance) that we implemented with a digipot, considered as an idealized non-volatile memristor. We demonstrate the behavior of the circuit by implementing a minimal spiking neuron model of associative learning by STDP, which is analog to the classic conditioning experiment of Pavlov’s dog.

Adrien D’hollande, Olivier Schneegans, Kang Wang et al. · 0 citations

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