Pyramidal Neuron

Pyramidal neurons (pyramidal cells) are a type of neuron found in areas of the brain including cerebral cortex, the hippocampus, and in the amygdala. Pyramidal neurons are the primary excitation units of the mammalian prefrontal cortex and the corticospinal tract. Pyramidal neurons were first discovered and studied by Santiago Ramón y Cajal. (from wikipedia)

Drawing of a pyramidal neuron by Santiago Ramón y Cajal, 1899.  (link)

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