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Internet Use Changes Older Brains

I love this story – using the internet is good for aging brains!

Internet Use Changes Older Brains
LiveScience
posted: 14 HOURS 46 MINUTES AGOcomments: 10filed under: SCIENCE NEWS

(Oct. 19) — Adults with little internet experience show changes in their brain activity after just one week online, a new study finds.

The results suggest Internet training can stimulate neural activation patterns and could potentially enhance brain function and cognition in older adults.

As the brain ages, a number of structural and functional changes occur, including atrophy, or decay, reductions in cell activity and increases in complex things like deposits of amyloid plaques and tau tangles, which can impact cognitive function.

UCLA/LiveScience

Brainphoto

Research has shown that mental stimulation similar to the stimulation that occurs in individuals who frequently use the Internet may affect the efficiency of cognitive processing and alter the way the brain encodes new information.

“We found that for older people with minimal experience, performing Internet searches for even a relatively short period of time can change brain activity patterns and enhance function,” Dr. Gary Small, study author and professor of psychiatry at the Semel Institute for Neuroscience and Human Behavior at UCLA, said in a statement.

The UCLA team worked with 24 neurologically normal volunteers between the ages of 55 and 78. Prior to the study, half the participants used the Internet daily, while the other half had very little experience. Age, educational level and gender were similar between the two groups.

The participants performed Web searches while undergoing functional magnetic resonance imaging (fMRI) scans, which recorded the subtle brain-circuitry changes experienced during this activity. This type of scan tracks brain activity by measuring the level of blood flow in the brain during cognitive tasks. While the study involves a small number of people and more research on this topic is needed, small study sizes are typical of fMRI-based research.

After the initial brain scan, subjects went home and conducted Internet searches for one hour a day for a total of seven days over a two-week period. These practice searches involved using the web to answer questions about various topics by exploring different websites and reading information. Participants then received a second brain scan using the same Internet simulation task, but with different topics.

The first scan of participants with little Internet experience showed brain activity in the regions controlling language, reading, memory and visual abilities. The second brain scan of these participants, conducted after the home practice searches, demonstrated activation of these same regions, but there was also activity in the middle frontal gyrus and inferior frontal gyrus – areas of the brain known to be important in working memory and decision-making.

Thus, after Internet training at home, participants with minimal online experience displayed brain activation patterns very similar to those seen in the group of savvy Internet users.

“The results suggest that searching online may be a simple form of brain exercise that might be employed to enhance cognition in older adults,” Teena D. Moody, the study’s first author and UCLA researcher, said in a statement.

You can read the rest of this article from Live Science on AOL News by clicking here.

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October 20, 2009 - Posted by | Aging, Health Issues, Living Conditions, News, Social Issues, Technical Issue

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