🔬 Discovery

Neuron doctrine (Cajal)

Doctrina neuronal

Date
1888-1894 · confidence high
Place
Barcelona / Madrid, Spain
Credited to
Santiago Ramón y Cajal; name 'neuron' by Waldeyer (1891)
People
👤 Santiago Ramón y Cajal1852–1934
Field
Life & health

⚠️ Disputed: the sources disagree.

What was discovered

Using Golgi staining he demonstrated that the nervous system is made up of individual cells (neurons) that communicate by contact, not continuity, and that the signal flows from dendrites to axon (dynamic polarisation).

Golgi defended the reticular theory even in his Nobel lecture, shared with Cajal in 1906.

What it led to

  • modern neuroscience
  • the concept of the synapse (Sherrington, 1897)
  • neurophysiology and neuroanatomy
  • understanding of plasticity and learning
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📄 Original publication

The Croonian lecture.—La fine structure des centres nerveuxSantiago Ramon y Cajal · Proceedings of the Royal Society of London · 1894

Links

Sources✓ verified 2026-09-25