Friday, May 3, 2019

How many connections can a neuron have?


How many connections can a neuron have?
Reference: Paul King,
The neuron with the highest number of connections is the Purkinje cell in the cerebellar cortex and is believed to have up to 200,000 input connections per neuron:
A more typical neuron is the pyramidal cell in the cerebral cortex which is believe to have around 10,000 inputs. The tiny dots long the dendrite are the “spines” where the input neurons connect:


Some relay cells, for example in the thalamus or spinal cord, may have only a few connections for code signal transmission but many more modulating inputs.

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