The human visual threshold depends on direction and strength of a weak magnetic field

被引:0
|
作者
F. Thoss
B. Bartsch
机构
[1] University of Leipzig,Carl Ludwig Institute of Physiology
来源
Journal of Comparative Physiology A | 2003年 / 189卷
关键词
Compass orientation; Geomagnetic field; Radical-pair mechanism; Threshold estimation; Visual sensitivity;
D O I
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学科分类号
摘要
Completing our investigations concerning influences of weak magnetic fields on the visual discrimination threshold, we have investigated 30 subjects (20 female, 10 male) under rotation of the geomagnetic field without change in field strength. We related the thresholds to the values measured in the unchanged field. Comparison with a control experiment shows that correspondence between viewing and field direction results in a significant decrease of the threshold. The significance is lost if the angle between the directions is set to 20°. On the basis of these and our earlier results an attempt is made to give a very simple description of the connection between field direction, field strength, and the change in the visual discrimination threshold.
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页码:777 / 779
页数:2
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