Columbia subject headings:
Electric fields--Physiological effect.
Electromagnetism--Physiological effect.
Magnetic fields--Physiological effect.
Harvard subject headings:
Electric fields--Physiological effect.
Electromagnetism--Physiological effect
Magnetic fields--Physiological effect
Princeton subject headings:
Electric fields--Physiological effect.
Electromagnetism--Physiological effect.
Magnetic fields--Physiological effect.