They say you can’t teach an old dog new tricks, but scientific findings seem to indicate otherwise. Research shows that our brains literally rewire in response to new stimulation. And when it comes to computer use, Internet activity may stimulate and possibly improve brain function, according to scientists at UCLA.

“Technology may be changing our minds and changing the way we think,” said Dr. Gary Small, a neuroscientist speaking last month at the UCLA Technology & Aging Conference at the Skirball Cultural Center.

Small, director of the UCLA Center on Aging, described results of research he and colleagues performed with volunteers between the ages of 55 and 76. Half of the participants were familiar with how to search the Internet, and the other half were new to it. The participants engaged in Internet searching while simultaneously undergoing functional magnetic resonance imaging (MRI).

The MRI images clearly showed activity in the areas of the brain that control decision-making and complex reasoning — but only in the Web-savvy group. The inexperienced group showed no such activity.

However, after just five one-hour sessions of practice, the Web newbies showed activation in the same areas of the brain as the savvy group.

“Five hours on the Internet and the naive subjects had already rewired their brains,” said Small, writing about the findings in “iBrain: Surviving the Technological Alteration of the Modern Mind” (HarperCollins). “Recent studies demonstrate that older brains do remain malleable and plastic throughout life. Even areas of the brain that were reserved for specialized tasks can be recruited and retrained.”

In other words, “use it or lose it” applies to the brain. Indeed, Small notes, “Several studies have shown that exercising the brain with mental aerobics not only can improve cognitive performance scores but also may delay brain degeneration.”

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