title: Magnetic field of a nerve impulse: first measurements.
abstract: The magnetic field of the action potential from an isolated frog sciatic nerve was measured by a SQUID magnetometer with a novel room-temperature pickup coil. The 1.2 x 10(-10) tesla field was measured 1.3 millimeters from the nerve with a signal-to-noise ratio of 40 to 1.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001001:Anura; D008280:Magnetics; D009431:Neural Conduction; D012584:Sciatic Nerve / Q000502:physiology