Scientists have developed heart tissue that contracts when exposed to light, which could pave the way for pacemakers that control the heart using light pulses (Image: Lucien Monfils)
There's no denying that pacemakers are life-saving devices, but they do have their limitations. These include the facts that their metal leads can break, they need to be surgically accessed if their batteries run out, and they can be disrupted by strong magnetic fields. Some or all of these problems may one day become things of the past, however, due to research currently being conducted at New York's Stony Brook University - scientists there are working towards the development of pacemakers that control the heart through pulses of light.
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