Discover how TENS stops pain signals
Three theories on how TENS relieves pain:
Gateway Control Theory
The non-painful signals from TENS “close the gate” and prevent the pain signals from going to the brain. Imagine that these signals are two trains on separate tracks. Each of these two tracks converges into one single track that goes to the brain. The train on the right is the pain signal, and it's headed for that single track to the brain. But, when the non-painful signal is stimulated-the train on the left-it heads for that same track to the brain, taking over the tracks and preventing the pain signal from getting through.
Endorphin Production Theory
The other explanation for the effectiveness of electrotherapy as a pain reliever was the observation that the TENS treatment released endorphins, the body's natural opiate-like painkiller. Often endorphins is referred to as the bodies “feel good chemical”.
Central Inhibitory Effect Theory
This means that TENS changes the way our bodies transmit different signals, which could ultimately mean that TENS changes the way we feel pain.
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