The neuron doctrine
Santiago Ramón y CajalCamillo Golgi
This page delivers no verdict; it presents claims and evidence with their sources. No theory in science is absolute. Method
For everyone
From 1888 on, Santiago Ramón y Cajal argued from microscope studies that the nervous system is made of separate cells, neurons. Camillo Golgi, by contrast, thought the nervous system was a continuous network. The two shared the 1906 Nobel Prize in Physiology or Medicine and defended opposing views at the ceremony. In the 1950s the electron microscope showed the synaptic gap between neurons, but it was also found that some cells are joined by direct electrical connections.
For specialists
Using the silver chromate staining method developed by Golgi, Cajal made individual neurons visible with all their branches. He proposed the principle of "dynamic polarisation", that neurons conduct in one direction from dendrites to cell body to axon. In 1897 Sherrington named the junction between cells the "synapse". At electrical synapses (gap junctions) the cytoplasm of two cells is directly linked by protein channels.
Claims
Evidence
Supporting
Electron microscope images showed a gap of about 20 nanometres (the synaptic cleft) between the endings of nerve cells.[3]
Challenging
In the crayfish nervous system some neurons were shown to be directly coupled electrically, with current passing from cell to cell, which qualifies a strict "wholly separate cells" view.[4]
Positions
- Golgi (reticular theory)
- Nerve fibres fuse into a continuous network; the nervous system consists of this network rather than of individual cells.[2]
Connections
Parent
Psychology and mindThis topic is a stop on these journeys
Sources
- Book (1991). Foundations of the Neuron Doctrine. Oxford University Press
- Web (1906). The Nobel Prize in Physiology or Medicine 1906nobelprize.orgarchive
- Article (1955). The fine structure of neurons. Journal of Biophysical and Biochemical Cytology 1(1), 69–88DOI 10.1083/jcb.1.1.69archive
- Article (1959). Transmission at the giant motor synapses of the crayfish. The Journal of Physiology 145(2), 289–325DOI 10.1113/jphysiol.1959.sp006143archive
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Cite this page
Athena contributors. (2026). The neuron doctrine. Athena: The tree of human knowledge. Retrieved November 1, 2026, from https://latifkedi.github.io/athena/en/d/noron-doktrini/
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title = {The neuron doctrine},
author = {{Athena contributors}},
year = {2026},
howpublished = {\url{https://latifkedi.github.io/athena/en/d/noron-doktrini/}},
note = {Athena: The tree of human knowledge. Accessed: 2026-11-01}
}Added: September 28, 2026 · Last changed: September 28, 2026 · Page history