Stimulating various parts of the head with electrical currents or magnetic fields seems to be a popular theme in science at the moment. And it’s generating results, too – one group of researchers have discovered a way to ‘remote control’ their subject while they walk, without making them lose balance. Meanwhile, another group has found a way to stimulate the frontal cortex of the brain that appears to improve the subject’s peripheral vision. The human body is increasingly becoming another piece of hackable hardware – the transhumanists must be feeling fairly smug.