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• W3026840772 abstract "Precise spike timing and temporal coding are used extensively within the nervous system of insects and in the sensory periphery of higher order animals. However, conventional Artificial Neural Networks (ANNs) and machine learning algorithms cannot take advantage of this coding strategy, due to their rate-based representation of signals. Even in the case of artificial Spiking Neural Networks (SNNs), identifying applications where temporal coding outperforms the rate coding strategies of ANNs is still an open challenge. Neuromorphic sensory-processing systems provide an ideal context for exploring the potential advantages of temporal coding, as they are able to efficiently extract the information required to cluster or classify spatio-temporal activity patterns from relative spike timing. Here we propose a neuromorphic model inspired by the sand scorpion to explore the benefits of temporal coding, and validate it in an event-based sensory-processing task. The task consists in localizing a target using only the relative spike timing of eight spatially-separated vibration sensors. We propose two different approaches in which the SNNs learns to cluster spatio-temporal patterns in an unsupervised manner and we demonstrate how the task can be solved both analytically and through numerical simulation of multiple SNN models. We argue that the models presented are optimal for spatio-temporal pattern classification using precise spike timing in a task that could be used as a standard benchmark for evaluating event-based sensory processing models based on temporal coding." @default.
• W3026840772 created "2020-05-29" @default.
• W3026840772 creator A5016225748 @default.
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• W3026840772 creator A5085762895 @default.
• W3026840772 date "2020-05-19" @default.
• W3026840772 modified "2023-10-14" @default.
• W3026840772 title "Event-Based Computation for Touch Localization Based on Precise Spike Timing" @default.
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• W3026840772 doi "https://doi.org/10.3389/fnins.2020.00420" @default.
• W3026840772 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7248403" @default.

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