top of page

What is a threshold?

•The minimum amount of energy required to produce myocardial depolarization

•Components of a stimulus include pulse amplitude (PA) (V) & pulse duration (PD) (ms)

What is a threshold?: About
1.png
What is a threshold?: About

An expotential relationship exists between amplitude & pulse duration (strength duration curve).

​

Short pulse durations

•small change in PD has a significant change in PA

​

Long pulse durations

•small change in PD has relatively small change in PA

2.png
What is a threshold?: About
What is a threshold?: About
bottom of page