Central nervous system neurons that internally communicate and intervene between sensory inputs and motor outputs.

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Interneurons are the neurons within the central nervous system that connect sensory pathways to motor pathways and perform the processing in between. They receive input from sensory neurons, integrate and decide how to respond, and then relay signals to motor neurons to produce an action. This internal communication and processing is essential for coordinating reflexes, modulating responses, and enabling complex behaviors. In contrast, motor neurons carry signals from the CNS to muscles, sensory neurons bring information from receptors to the CNS, and glial cells support neuronal function rather than transmitting signals between inputs and outputs. So the description of neurons that internally communicate and mediate between sensory input and motor output points to interneurons.