Specific rates will illicit different results:

 
pps - Pulses Per Second

Endorphins - Naturally occurring hormones that reduce pain and enduce a feeling of well-being. They are released in response to injury and physical stress. Morphine, and related medications, have a similar chemical structure to endorphins - which explains their strong painkilling effects.

Gating Effect - Occurs when a physical stimulus overrides the sensation of pain. For example, pain can be reduced after we stub a toe by rubbing it vigorously. These new "non-painful" messages compete for attention, and are processed in favour of the "pain" messages.

Rates according to BioStim™ equipment settings:
(These figures will vary slightly between different models)