# Neuron **Collection:** [[collections/Neurotech|Neurotech]] **Type:** Neural cell concept **Primary sources:** [[articles/2026 Annual Report on Brain-Computer Interfaces|2026 Annual Report on Brain-Computer Interfaces]]; [[articles/The Organic-Synthetic Brain Atlas|The Organic-Synthetic Brain Atlas]] ## Definition A **neuron** is an excitable cell that receives, integrates, and transmits signals through electrical and chemical processes. ## Relationships - Neurons are graph nodes in many [[wiki/Connectome|connectomes]] and biological units in [[wiki/Organoid Intelligence|organoid-intelligence]] systems. - [[wiki/Spiking Neural Network|spiking neural networks]] abstract selected neuronal behaviors into computational models. - Biological neurons, model neurons, and chip "neurons" are related abstractions, not interchangeable entities.