Answer: Some sodium channels have been inactivated and cannot be reopened immediately
Why does the threshold increase when the interval between the stimuli decreases?

In electrophysiology the threshold potential is the critical level to which a membrane potential must be depolarized to initiate an action potential.In neuroscience threshold potentials are necessary to regulate and propagate signaling in both the central nervous system (CNS) and the peripheral nervous system (PNS).. Most often the threshold potential is a membrane potential value between ...

Temporal summation is the relationship between stimulus duration and intensity when the presentation time is less than 1 second. Auditory sensitivity changes when the duration of a sound becomes less than 1 second. The threshold intensity decreases by about …

Threshold potential - Wikipedia

Subliminal stimuli - Wikipedia

Threshold potential - Wikipedia

Threshold potential - Wikipedia

The subsequent change in ...


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