Just six weeks of training can turn average people into memory masters.
Boosting these prodigious mnemonic skills came with overhauls in brain activity, resulting in brains that behaved more like those of experts who win World Memory Championships competitions, scientists report March 8 in Neuron.
The findings are notable because they show just how remarkably adaptable the human brain is, says neuroscientist Craig Stark of the University of California, Irvine. “The brain is plastic,” he says. “Through use, it changes.”
It’s not yet clear how long the changes in the newly trained brains last, but the memory gains persisted for four months.
In an initial matchup, a group of 17 memory experts, people who place high in World Memory Championships, throttled a group of people with average memories. Twenty minutes after seeing a list of 72 words, the experts remembered an average of 70.8 words; the nonexperts caught, on average, only 39.9 words.
In subsequent matchups, some nonexperts got varying levels of help. Fifty-one novices were split into three groups. A third of these people spent six weeks learning the method of loci, a memorization strategy used by ancient Greek and Roman orators. To use the technique, a person must imagine an elaborate mental scene, such as a palace or a familiar walking path, and populate it with memorable items….
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