Relative refractory period

Definition

The relative refractory period is the phase following an action potential during which a neuron can be stimulated to initiate another action potential, but only by a stronger-than-usual stimulus. It occurs right after the absolute refractory period and represents a time of decreased sensitivity to new stimuli.

Related terms

Action Potential: A rapid rise and fall in membrane potential that propagates along the nerve fiber, serving as the fundamental mechanism of nerve impulse transmission.

Absolute Refractory Period: The brief interval immediately following an action potential during which a neuron cannot generate another action potential, no matter how strong the stimulus is.

Neuron: A specialized cell transmitting nerve impulses; a nerve cell