Document Detail

The geomagnetic field influences the sensitivity of our eyes.
MedLine Citation:
PMID:  17349666     Owner:  NLM     Status:  MEDLINE    
Experiments involving the orientation of animals, especially birds, have shown that the visual system and geomagnetic field are linked. On the basis of these findings, we have addressed the question of whether there is an influence of the geomagnetic field on light-sensitivity of the visual system in man. Here we report on measurements of the photopic sensitivity of the human visual system for a 0.5s test-stimulus without magnetic field and with the full local field of 48 microT rotated into the line of view. The experiments show that the geomagnetic field increases this sensitivity by 6-7%, depending on the stimulated area. Based on this increase the probable change in perception of the background luminance was calculated by the Weber-law.
Franz Thoss; Bengt Bartsch
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial     Date:  2007-03-08
Journal Detail:
Title:  Vision research     Volume:  47     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-03-26     Completed Date:  2007-06-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  1036-41     Citation Subset:  IM    
Carl Ludwig Institute of Physiology of University Leipzig, Liebigstrasse 27, 04103 Leipzig, Germany.
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MeSH Terms
Ocular Physiological Phenomena*
Photic Stimulation
Sensory Thresholds
Visual Perception / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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