On the Excitability of Ultra-Low-Power CMOS Analog Spiking Neurons
(2026) 2026 IEEE 17th Latin America Symposium on Circuits and System (LASCAS) — Location: Arequipa, Peru (24.February.2026)
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- Abstract
- The excitability property of spiking neurons describes their capability to output an action potential as a real-time response to an input synaptic excitation current and is central to the event-based neuromorphic computing paradigm. The spiking mechanism is analysed in a representative ultra-low-power analog neuron from the circuit literature. Relying on conventional SPICE simulations compatible with industrial transistor compact models, we establish a excitation criterion, quantified either in terms of critical supplied charge or membrane potential threshold. Only the latter is found intrinsic to the neuron, i.e. independent of the input stimulus. Rigorous analysis of the nonlinear neuron dynamics provides insight but still needs to be explored further, as well as the effect of the intrinsic noise.
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Van Brandt, L., Brandsteert, G., & Flandre, D. (2026). On the Excitability of Ultra-Low-Power CMOS Analog Spiking Neurons. IEEE, /(/), 1-5. https://doi.org/10.1109/lascas67804.2026.11457123 (Original work published 2026)