A team of Israeli researchers has found that the brain continues to hold the imprint of events and experiences that had taken place at least 24 hours ago.
Researchers at Weizmann Institute of Science in Rehovot, Israel, used the findings from an earlier study conducted by the Institute's Professor Rafi Malach who said that the brain activity continues to function even if the owner was resting. The researchers found that while a person was resting, the normal bursts of nerve cell activity in the brain was replaced by ultra-slow patterns of neuronal activity, which they believed represented the 'archives' of earlier experiences.
The researchers recruited a group of volunteers and asked them to go through a training exercise that strongly activated a well-defined network of nerve cells in the cortex. They also measured participants' brain activity with the help of functional magnetic resonance imaging scanner (fMRI) before, immediately at the end and 24 hours after the training exercise. The researchers found that the training exercise changed the resting brainwave patterns right after it occurred and strengthened new links between brain cells more than 24 hours after the event had occurred.
"Today, we are discovering more and more of the common principles of brain activity, but we have not been able to account for the differences between individuals. In the future, spontaneous brain patterns could be the key to obtaining unbiased individual profiles", Professor Malach said.