The principal noise-reduction scheme is to use two highly sensitive instruments — one at the measurement site and one far away. The on-site sensor will hear the desired signal, but both will hear the magnetic noise. So it should be possible to subtract out much of the magnetic interference, raising the signal-to-noise ratio.
Could you not then use something like a mu-metal (nickel/iron) or even aluminum, as a shielding around the NIST sensor?
In conjunction with the external device, that could be used to subtract external magnetic interference,
(as well as the earths base-line magnetic field).
I mean, the Emotiv device does something very similar already, to solve the grounding issue that previous
EEG headsets had issues with. Perhaps an oversimplification of the process, but the headset subtracts/filters the
values to get rid of the static interference.
Could the rubidium vapor then be locked inside something like a polymer, like your (insight) gel-based poylmer?
The NIST sensor I seen here: http://newatlas.com/nist-miniature-brainwave-magnetosensor/22764/pictures?thumb=true#picture4
suggests that it uses a Prism.
Could a device like this, then be used to get the ‘spin’ direction of the neural activity?
I think if Emotiv is looking for inspiration on a next product, I think this might be a good direction.
This could also give you an edge over the Open-BCI project as well, although I think your gel-based sensor
already does that.
