Exposure to a specific pulsed low-frequency magnetic field: a double-blind placebo-controlled study of effects on pain ratings in rheumatoid arthritis and fibromyalgia patients.

Background: Specific pulsed electromagnetic fields (PEMFs) have been shown to induce analgesia (antinociception) in snails, rodents and healthy human volunteers.

Objective: The effect of specific PEMF exposure on pain and anxiety ratings was investigated in two patient populations.

Design: A double-blind, randomized, placebo-controlled parallel design was used.

Human exposure to a specific pulsed magnetic field: effects on thermal sensory and pain thresholds.

Exposure to pulsed magnetic fields (MF) has been shown to have a therapeutic benefit in both animals (e.g. mice, snails) and humans.

Analgesic and behavioral effects of a 100 microT specific pulsed extremely low frequency magnetic field on control and morphine treated CF-1 mice.

Diverse studies have shown that magnetic fields can affect behavioral and physiological functions. Previously, we have shown that sinusoidal extremely low frequency magnetic fields and specific pulsed magnetic fields (Cnps) can produce alterations in the analgesia-related behavior of the land snail. Here, we have extended these studies to show an induction of analgesia in mice equivalent to a moderate dose of morphine (5 mg/kg), and the effect of both Cnp exposure and morphine injection on some open-field activity.