PAIN RELIEF
- Occurs via the Gate Mechanisms at 90-130 Hz
- The Opioid Mechamnism at 2-5 Hz
- Stimulation of the Reticular Formation at 10-25 Hz (Pain messages reach the cerebral cortex via the reticular formation and it is the origin of the descending analgesic pathways )
- Blocking C-fibre transmission at >50 Hz
MUSCLE STIMULATION
- Low Frequency, eg 1Hz results in a series of twitches
- Tetany occurs at >50 Hz
- The most effective range for muscle contraction is between 10-20Hz





