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Science 336 (6084): 1054-1057

Copyright © 2012 by the American Association for the Advancement of Science

Neural Correlates of a Magnetic Sense

Le-Qing Wu, and J. David Dickman*

Abstract: Many animals rely on Earth’s magnetic field for spatial orientation and navigation. However, how the brain receives and interprets magnetic field information is unknown. Support for the existence of magnetic receptors in the vertebrate retina, beak, nose, and inner ear has been proposed, and immediate gene expression markers have identified several brain regions activated by magnetic stimulation, but the central neural mechanisms underlying magnetoreception remain unknown. Here we describe neuronal responses in the pigeon’s brainstem that show how single cells encode magnetic field direction, intensity, and polarity; qualities that are necessary to derive an internal model representing directional heading and geosurface location. Our findings demonstrate that there is a neural substrate for a vertebrate magnetic sense.

Department of Neuroscience, Baylor College of Medicine, Houston, TX 77024, USA.

* To whom correspondence should be addressed. E-mail: dickman{at}

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