>> first, you do it in non-human primates and show that they can effective control the arm with the implant... Then you show that the implant is stable Uncited

>> first, you do it in non-human primates and show that they can effective control the arm with the implant... Then you show that the implant is stable Uncited, I'm not sure my reply is worth much - but such studies have already taken place. Non-human primates have shown dexterity with such devices - but the 'interface' has a life of around 6 months due to prolonged , subtle vibrations in the 'brain probe' and scarring. EEG inputs, while non-invasive, are susceptible to interference and work best with additional triggers such as speech to extend ones 'vocabulary' of movements. The reason being it's hard to to calibrate. Lastly, electrocorticography (ECoG), seems a happy medium: picking up high frequency signals within the skull and atop the brain. So no issues with scarring and the signals are easier to map to brain regions. 'Google Tech Talk' on the subject (1hr)[1]: http://www.youtube.com/watch?v=mFWnTONOvVo http://www.youtube.com/watch?v=mFWnTONOvVo [1] Includes footage of monkeys + robotic arms @ 9m30s