NDLI: Weak Broadband Electromagnetic Fields are More Disruptive to Magnetic Compass Orientation in a Night-Migratory Songbird (Erithacus rubecula) than Strong Narrow-Band Fields

Content Provider	PubMed Central
Author	Schwarze, Susanne Schneider, Nils-lasse Reichl, Thomas Dreyer, David Nele, Lefeldt Engels, Svenja Baker, Neville Hore, P. J. Mouritsen, Henrik
Copyright Year	2016
Abstract	Magnetic compass orientation in night-migratory songbirds is embedded in the visual system and seems to be based on a light-dependent radical pair mechanism. Recent findings suggest that both broadband electromagnetic fields ranging from ~2 kHz to ~9 MHz and narrow-band fields at the so-called Larmor frequency for a free electron in the Earth’s magnetic field can disrupt this mechanism. However, due to local magnetic fields generated by nuclear spins, effects specific to the Larmor frequency are difficult to understand considering that the primary sensory molecule should be organic and probably a protein. We therefore constructed a purpose-built laboratory and tested the orientation capabilities of European robins in an electromagnetically silent environment, under the specific influence of four different oscillating narrow-band electromagnetic fields, at the Larmor frequency, double the Larmor frequency, 1.315 MHz or 50 Hz, and in the presence of broadband electromagnetic noise covering the range from ~2 kHz to ~9 MHz. Our results indicated that the magnetic compass orientation of European robins could not be disrupted by any of the relatively strong narrow-band electromagnetic fields employed here, but that the weak broadband field very efficiently disrupted their orientation.
Related Links	http://dx.doi.org/10.3389/fnbeh.2016.00055
Starting Page	55
File Format	PDF
ISSN	16625153
e-ISSN	16625153
Journal	Frontiers in Behavioral Neuroscience
Volume Number	10
Language	English
Publisher	Frontiers Media S.A.
Publisher Date	2016-03-01
Access Restriction	Open
Rights Holder	Frontiers Media S.A.
Subject Keyword	Cognitive Neuroscience Behavioral Neuroscience Neuropsychology and Physiological Psychology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Cognitive Neuroscience Behavioral Neuroscience Neuropsychology and Physiological Psychology

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