#electric_potential__potential__potential_difference__potentialdifference__potential_drop__potentialdrop__voltage  the difference in electrical charge between two points in a circuit expressed in volts
  supertype:  electrical_phenomenon  a physical phenomenon involving electricity
  subtype:  evoked_potential  the electrical response of the central nervous system produced by an external stimulus; "he measured evoked potentials with an electroencephalogram"
  subtype:  resting_potential__restingpotential  the potential difference between the two sides of the membrane of a nerve cell when the cell is not conducting an impulse

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