The interface that imparted information into a human subject was just a standard transcranial magnetic stimulation coil that they futzed around with until for each subject they found an orientation and intensity and frequency that made them see a spot in their visual field when it was activated. They then would report when they saw a spot and slowly decode a binary string of seeing and not-seeing. That's nothing terribly new, what was new was that the on/off state was decided upon by a computer using electrodes to get a rough look at a sitting person's imagery/intent of moving their arms, and they would visualize moving their arms or not in order to binary-encode the message.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one.
3. Open Threads should be posted in Discussion, and not Main.
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