Sensory pathways are often depicted as chains of individual neurons connected in series. This is an oversimplification. Sensory information is processed and modified at each level in the chain by interneurons and by input from other areas of the nervous system.

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Sensory pathways are often depicted as chains of individual neurons connected in series. This is an oversimplification. Sensory information is processed and modified at each level in the chain by interneurons and by input from other areas of the nervous system.