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2017 ; 12
(3
): e0173887
Nephropedia Template TP
gab.com Text
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English Wikipedia
Can a hybrid chemical-ferromagnetic model of the avian compass explain its
outstanding sensitivity to magnetic noise?
#MMPMID28296939
Kavokin K
PLoS One
2017[]; 12
(3
): e0173887
PMID28296939
show ga
While many properties of the magnetic compass of migratory birds are satisfactory
explained within the chemical model of magnetoreception, its extreme sensitivity
to radio-frequency magnetic fields remains a mystery. Apparently, this difficulty
could be overcome if the magnetoreceptor model were augmented with a magnetite
nanoparticle, which would amplify the magnetic field at the position of the
magneto-sensitive cryptochrome molecule. However, comparison of the
radio-frequency power used in the experiment with intrinsic magnetization noise
of such a particle, estimated from the theory of fluctuations, shows that the
required sensitivity cannot be reached with realistic parameters of iron-oxide
nanocrystals.