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Brain-hacking. It sounds sinister and quite possibly illegal, like a cerebral version of computer-hacking.
But some one claimed he has,according to Davis.... I’ve been brain-hacked. It happened on Thursday morning in Swansea. And not only am I still here to tell the tale, it also made me better at darts.
Of course, not many people care how good they are at darts. 
But there is evidence to suggest that brain-hacking, or transcranial direct-current stimulation (tDCS) to give it the proper scientific name, can treat depression
, aid stroke victims, help to overcome nicotine addiction and even improve mathematical ability in children.
Apparently brain-hacking can help with all that according to expert, as well as enhancing sports performance.
So what is brain-hacking? In simple terms, it is a gentle stimulation of the brain with a mild electrical current, administered between two electrodes.

According to expert,This treatment can adds an extra electric field on top, temporarily making the brain keener by altering the behaviour of the neurons, though nowhere near as dramatically as electroconvulsive therapy (ECT), the barbaric psychiatric treatment developed in the Thirties to ‘cure’ mental illness, which basically resets all the processing in the brain.
For some of us according to Davis, the very idea of an electric current passing through the brain conjures horrific images of the 1975 film One Flew Over The Cuckoo’s Nest, which, according to the Royal College of Psychiatrists, did for ECT what Jaws did for sharks.
Its believed that ECT typically sends 800 milliamps of electricity through the brain, tDCS sends between one and two, equivalent to less than 1 per cent of the power of a 60-watt light-bulb.
(mailonline)