noun, plural: interneurons
(1) Any local circuit neuron of the central nervous system that relays impulses between sensory neuron and motor neuron.
(2) A multipolar neuron that links sensory neuron to motor neuron in neural pathway.
The nerve cells of the central nervous system are all interneurons. In human brain, there are about 100 billion interneurons. Example is the Golgi cell found in the cerebellum.
Word origin: Latin, meaning between + neuron.
Related forms: interneuronal (adjective).