ANATOMY

Detailed explanation-1: -Although the majority of neurons are already present in our brains by the time we are born, there is evidence to support that neurogenesis (the scientific word for the birth of neurons) is a lifelong process.

Detailed explanation-2: -But work by Fred “Rusty” Gage, PhD, president and a professor at the Salk Institute for Biological Studies and an adjunct professor at UC San Diego, and others found that new brain cells are continually produced in the hippocampus and subventricular zone, replenishing these brain regions throughout life.

Detailed explanation-3: -In our sample of 50 brains from men, we find that IQ does not correlate with the number of brain cells in the human neocortex and was only weakly correlated to brain weight.

Detailed explanation-4: -The brain can produce new cells Neurogenesis is now accepted to be a process that occurs normally in the healthy adult brain, particularly in the hippocampus, which is important for a learning and spatial memory.