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Travel Back to the 1950s With Fall TV's Most Titillating New Show

The real reason we're excited for Showtime's The Masters of Sex to premiere...


The refractory period is when it is difficult to restimulate a region of a neuron during an action potential and for a little time after. It is divided into two phases: the absolute refractory period lasts from the start of the action potential until the cell returns to RMP, in which no stimulus can trigger a new action potential; the relative refractory period lasts until the end of hyperpolarization, in which a new action potential can be triggered only with an unusually strong stimulus.