The British Foreign and Commonwealth Office (FOC) said it was working to try and resolve Mr Power's case.

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Speaking to BBC Radio Scotland's Good Morning Scotland programme, he praised the Foreign and Commonwealth Office (FoC) for liaising closely with Scottish officials.

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None of those are quite like the foc.us, however, which serves up transcranial direct-current simulation (tDCS) -- a controversial form of neurosimulation that transmits current to a particular area of the brain.

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The idea behind the foc.us headset is to put it on your noggin, fire it up, and wait for around five to ten minutes, then take it off and go about your day.

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Still, the foc.us is one of a few tDCS headsets designed for the consumer market and can, the inventor Michael Oxley claims, improve your working or short-term memory when the electrodes are placed on your prefrontal cortex.

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