Extracellular Field Potentials
How the combined electrical activity of many nearby neurons firing together can be detected from just outside the cells, at population scale rather than single-cell scale.
References
- Thomas, C.A., Springer, P.A., Loeb, G.E., Berwald-Netter, Y., Okun, L.M. "A Miniature Microelectrode Array to Monitor the Bioelectric Activity of Cultured Cells." Experimental Cell Research 74, no. 1 (1972): 61–66.