NPR has learned the monitoring was discontinued because the gauges failed to reliably show whether service members had been close enough to an explosion to have sustained a concussion, or mild traumatic brain injury.īut the small wearable devices did produce a trove of data on blast exposure that could eventually have helped researchers understand the links between bomb blasts, concussions and brain diseases. The Pentagon has quietly sidelined a program that placed blast gauges on thousands of combat troops in Afghanistan.
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