Paralysed patients communicate thoughts via brain-computer interface

By Kate Kelland LONDON (Reuters) - Scientists have developed a brain-computer interface that reads the brain's blood oxygen levels and enables communication by deciphering the thoughts of patients who are totally paralysed and unable to talk. In a trial of the system in four patients with complete locked-in syndrome - incapable of moving even their eyes to communicate - it helped them use their thought waves to respond yes or no to spoken questions. If all eye movements are lost, the condition i