extracellular potential

Contributions from neighboring neurons may overlap, producing extracellular potentials of up to several millivolts.

With his student John Clark, he derived a mathematical relationship between the transmembrane potential and the extracellular potential produced by a propagating action potential in a nerve axon.

Another lab-on-a-chip similarly combined a microfluidic network in PDMS with planar microelectrodes, this time to measure extracellular potentials from single adult murine cardiomyocytes.