Another prove of Peto's genius

The Act of “Learning”

Scientists knew that new brain cells are able “enhance learning” – they never thought that “learning” could actually cause the birth of new brain cells… that is, until recently. In recent animal studies, researchers have found that there was a direct relationship between “learning” and the survival rate of newly-birthed brain cells.

When researchers taught certain rodents a wide-variety of cognitive tasks which involved a wide-range of brain areas – scientists found that the more the animal “learned” – the more new neurons were able to survive in the hippocampus. Scientists have made it clear that “learning” can increase the presence of new neurons in the brain.

Brain cells that are born in the hippocampus, which normally die off, are literally “rescued” by “learning” experiences. There is still plenty of research being conducted in this area and not all sources agree.

An Enriched Environment

Science has long known that living in a mentally stimulating environment vs. an impoverished environment is far better for brain development. Research has found that exposure to an enriched environment enhances neurogenesis functioning and is able to regulate emotionality.

Scientists have found that memory-based tasks were far improved in the hippocampus region of the brain when human beings are raised in a healthy, enriched environment. One study found that mice put in stimulating environments actually had larger hippocampus regions than did those living in “standard” or “poor” laboratory conditions. They discovered a direct correlation between an enriched environment and the amount of neurons produced in the brains of mice. This had a significant effect on neurogenesis!

An Exercise Regimen

Everybody knows that exercise is good for your overall health and heart, but in recent findings, powerful evidence has proven that exercise is great for your brain. Scientific experiments have discovered that mice consistently using running wheels had around 2x the amount of hippocampal neurons (brain cells) as the mice that didn’t exercise.

Another study at Colombia University found that humans who had a exercise training program were able to grow and maintain new brain cells and nerve cells in the hippocampus region of the brain. The specific area called the “dentate gyrus” is responsible for helping produce neurogeneis. Even more studies have discovered that those who exercised had 2 – 3x increases in the birth-rate of new neurons!

For more information:

The Journal of Neuroscience. 2007 Mar; 27(13): 3252-3259. Experience-Specific Functional Modification of the Dentate Gyrus through Adult Neurogenesis: A Critical Period during an Immature Stage. Tashiro A, Makino H, Gage FH.

Stanford University Research In Progress: HD & Lifestyle http://www.stanford.edu/group/hopes/rltdsci/inprogress/ae2.html