Types of magnets that have been used
Hi, first of all I'd like to say that I'm new here. :P
I've been lurking around a bit, and it seems to me that so far most discussions revolve around magnet implantation. However, most people seem to be using neodymium magnets which are pretty strong. My question is: has anyone used any other types of magnets and how effective they are (in terms of sensing electromagnetic waves)?
I'm thinking whether there is a more biocompatible option out there and I am wondering what is the minimum amount of magnetism needed for the neurons to start picking up electromagnetic waves.