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The magnetic field sensitivity of the human visual system shows resonance and compass characteristic



The magnetic field sensitivity of the human visual system shows resonance and compass characteristic



Journal of Comparative Physiology. A Sensory Neural and Behavioral Physiology 186(10): 1007-1010



Orientation in the geomagnetic field is essential for many animal species. As yet, the interaction mechanisms of this weak field with the organisms are understood only incompletely. One mechanism in question is the interaction with the photochemical reaction in the retina. We show that the visual sensitivity of man is influenced by periodic sinusoidal inversion of the vertical component of the geomagnetic field. This effect indicates visual fixation in north-south direction and shows a pronounced resonance at a period duration of 110 s. These findings should be helpful in identifying in detail the mechanisms which are influenced by the geomagnetic field.

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Accession: 047676638

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PMID: 11138791


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