It was my understanding that there was a single implant, so when you used the plural, I wanted to be sure I understood. I dunno, maybe there was more than one. (Not worth researching :-) )
It's that white thing in the middle, I believe:
Dr. Boyle's point is interesting. I remember the excuse they used for not doing one, namely, that an MRI would fry the brain area around the implant. It was my understanding that a functional MRI (fMRI) could be done safely, but never was. However, I'm not a medic so would be glad to get professional advice on such questions.
It was my understanding that there was a single implant, so when you used the plural, I wanted to be sure I understood. I understand. The only reason I thought it could be plural is because if a bird sits on a high voltage power line, nothing happens. That doesn't mean I am right. Did Dr. Nelson tell us exactly what the situation was?