neurogenesis is incorrectly written, and should be written as "neurogenesis" being its meaning: Word of Greek origin: neurou neuron: nerve, fiber, cord, strap, strength and genos geneos: origin, lineage, birth, gender: origin of the nerves. It is the production of the cells of the central nervous system which, as we know, includes the brain and spinal cord. These cells are neurons and glial cells. The function of the latter seems to be support to neurons: are food reserve and a memory store. This production of nerve cells begins in the fourth week of gestation and until the second half of the 20th century it was thought that it ended with the birth and there was no feedback. However, today we know that there may be it which opens up a horizon of hope for brain injury, spinal cord and diseases such as Alzheimer's or Parkinson's.