<P> In neuroscience , repolarization refers to the change in membrane potential that returns it to a negative value just after the depolarization phase of an action potential has changed the membrane potential to a positive value . The repolarization phase usually returns the membrane potential back to the resting membrane potential . The efflux of K ions results in the falling phase of an action potential . The ions pass through the selectivity filter of the K channel pore . There are several K channels that contribute to repolarization , including A-type channels , delayed rectifiers , and Ca - activated K channels . </P>
<P> In neuroscience , repolarization refers to the change in membrane potential that returns it to a negative value just after the depolarization phase of an action potential has changed the membrane potential to a positive value . The repolarization phase usually returns the membrane potential back to the resting membrane potential . The efflux of K ions results in the falling phase of an action potential . The ions pass through the selectivity filter of the K channel pore . There are several K channels that contribute to repolarization , including A-type channels , delayed rectifiers , and Ca - activated K channels . </P>
what ion drives the membrane potential back to resting membrane potential ( repolarization )
what ion drives the membrane potential back to resting membrane potential ( repolarization )
K ions
K ions