The other day, some friendly scientists in Philadelphia attached electrodes to my head — one just above and behind my right ear, and the other on my left cheekbone — and ran electricity through my brain.
As they did, I took a computerized memory test. My scores on the test significantly improved from an earlier test I took without the electricity. It turns out you can tune up someone's brain like a car battery. I felt — and looked — a bit like a Frankenstein creature, but the results were impressive.
Welcome to the promising world of transcranial direct current stimulation (tDCS), a highly refined, very safe and relatively cheap biomedical treatment that is being studied for use not only in improving memory but treating depression and epilepsy.
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