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tDCS
Transcranial direct current stimulation, or tDCS is a non-invasive way to electrically stimulate the brain. In essence, its connecting a battery to the brain via a wet sponge.
A nine-volt battery is connected to large flat sponges that are moistened and then applied to the head. It delivers a gentle 2 to 2.5 milliamps of current spread over a 20 to 50 square millimetre area of the scalp for up to 15 minutes.
Whilst the mechanism behind it are unclear, 'boosting' the electrical power running through the brain by this tiny amount - most of that 2.5 milliamps is dissipated throughout the head, not just the brain - has been shown to temporarily improve memory access and general cognitive ability. It is often used in the treatment of damaged brains.
See Also: TMS, Non-invasive BCI
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(06/09/2013)
Of the 15 million people around the world who have survived poliomyelitis, up to 80% report progressive deteriorating strength and endurance many years after infection, a condition known as post-polio syndrome (PPS). Researchers in Italy fr...
(28/08/2006)
Today's medical technology could be used to enhance our brains to make them work quicker and better, as revealed in a new free exhibition opening at the Science Museum in the UK in October.
Visitors to the museum will be abl...
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