And did they have to send the OpenBCI setup back afterwards, so that it can be sent to the next paper author?
The paper uses the OpenBCI wifi shield. And we do not know of a seller from which users have confirmed that they have a Wifi shield which works.
The situation was similar with Biosemi Active 2 amplifiers
The Biosemi Active 2 amplifers have been used to write papers at the Meditation Research Institute in India.
Whre the amplifiers then sent back to Biosemi?
And then they have been sent from Biosemi to Neurospec in Stans Switzerland who made YouTube video demos with it especially made for the Meditation Research Institute Switzerland (MRIS)?
And where the Biosemi Active amplifiers then send back again to Biosemi for the next demo or paper?