Abstract Spike sorting is a crucial step in decoding multichannel extracellular neural signals, enabling the identification of individual neuronal activity. A key challenge in brain–machine interfaces is achieving real-time, low-power spike sorting at the edge while keeping high neural decoding performance. This study introduces the neuromorphic sparse sorter (NSS), a compact two-layer spiking neural network optimized for efficient spike sorting. NSS leverages the locally competitive algorithm for sparse coding to…