Is magnetic function unipolar or bipolar?

Both unipolar and bipolar magnet therapies have been used in various forms for a long time.

The terms “unipolar” and “bipolar” describe how the magnetic poles are oriented relative to the body.

Static (Permanent) Magnet Therapy

• Bipolar static magnet therapy uses multiple individual magnets arranged in an alternating pattern, so both the north and south poles face the mattress surface and the body.
• Unipolar static magnet therapy uses multiple magnets aligned so that the same magnetic pole faces the body.

Permanent (static) magnets do not require electricity. They continuously produce a magnetic field as long as the magnets are present.

PEMF (Pulsed Electromagnetic Field)

PEMF technology is a modern development based on magnetic therapy principles. Instead of fixed poles, PEMF rapidly alternates magnetic polarity using electric current. This alternation typically occurs at very low frequencies — usually between 1 and 60 cycles per second (Hz).

Because the magnetic field is constantly changing, PEMF delivers a dynamic magnetic stimulus, which differs from static magnet exposure. PEMF requires electrical power to operate.

Ereada® Magnet Systems

• Gray Ereada Amethyst mats do not contain permanent (static) magnets and rely only on PEMF.
• Purple Ereada Amethyst and Ereada Gemstone mats include both PEMF and permanent (static) magnets.

In Purple Ereada® mats, the permanent magnets are arranged so that the same magnetic pole faces the body across the magnet set. This configuration is sometimes referred to as unipolar exposure, even though the magnets themselves remain bipolar by nature. The opposite pole is oriented away from the body, toward the bottom of the mat.

Summary

• Static magnets → constant magnetic field, no electricity
• PEMF → alternating magnetic field, powered electrically
• Gray Ereada mats → PEMF only
• Purple & Gemstone Ereada mats → PEMF + static magnets