a localized change in electrical potential, from about –70 mV to +30 mV and back again, that occurs across a nerve fibre during transmission of a nerve impulse
Examples of 'action potential' in a sentence
action potential
The sodium channel provides the basis for the action potential.
The Scientist (2001)
A neuroresponse leading to light images begins with the opening of ion channels, causing an action potential within the cell.
The Scientist (2001)
It also helps the cell retain a memory of recent action potentials, which can be important for neuronal plasticity.