Then, while the participants performed an attention testing task, neural activity in the brain was measured by making use of electrodes on the scalp. (ahealthblog.com)
It is done by placing electrodes in the brain to pick up specific patterns of electrical activity that relate to thoughts about moving. (newscientist.com)
The solutions are pumped into a cell containing a membrane between the two fluids with electrodes on either side, releasing energy. (sciencedaily.com)