Book Definition: Sensory neurons treat the brain to all your sensory experience, including vision, hearing, taste, touch, smell, pain and balance. Also known as afferent neurons.

History (Optional)

Santiago Ramon y Cajal(1852-1934) suggested that the neuron was the anatomical and functional unit of the nervous system, and it is largely because of his work that the Neuron Doctrine eventually came to accepted. In 1887, Cajal started using Gologi's mathod of staining nervous tissue, and pioneered an improved method, which involved immersing tissues in a fixative and silver nitrate a second time. A second immersion stained the tissues more deeply, allowing Cajal to study them in greater detail. In a make-shift laboratory set up in his kitchen, Cajal systematically examined and described nervous tissue from most regions of the brains of various species. In doing so, he was an early pioneer of comparative neuroanatomy.

In Your Own Words

  • They sense information themselves, or they receive information from sensory receptors.
  • They allow us to translate the outside world into a language that the brain can interpret.
  • The way our brain receives information from certain sensations.


  • A one way street that carries traffic to the main facility.
  • They're responsible for bringing information from sensory receptors to the central nervous system

Additional Resources

  1. Sensory Neurons