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, 208 (4439), 53-5

Magnetic Field of a Nerve Impulse: First Measurements

Magnetic Field of a Nerve Impulse: First Measurements

J P Wikswo et al. Science.

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.

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