Magnetic Anisotropy and the Orientation of Retinal Rods in a Homogeneous Magnetic Field | Zendy

Felix T. Hong | Zendy; D. Mauzerall | Zendy; Alexander Mauro | Zendy

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Magnetic Anisotropy and the Orientation of Retinal Rods in a Homogeneous Magnetic Field

Author(s) -

Felix T. Hong,

D. Mauzerall,

Alexander Mauro

Publication year - 1971

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.011

H-Index - 771

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.68.6.1283

Subject(s) - magnetic field , anisotropy , orientation (vector space) , rod , condensed matter physics , magnetic anisotropy , homogeneous , materials science , magnetic energy , field (mathematics) , physics , nuclear magnetic resonance , optics , magnetization , geometry , mathematics , thermodynamics , quantum mechanics , medicine , alternative medicine , pathology , pure mathematics

The reported orientation of retinal rods in a homogeneous magnetic field can be explained by the magnetic anisotropy of oriented molecules in the disc membranes of the rods. The energy of a single rod as a function of orientation in the magnetic field, the time required for alingment of the rod in a viscous medium, and the fluctuations of orientation are calculated. Arguments that rhodopsin is the constituent responsible for the effect are given. The possibility of orientation due to inhomogeneity of the magnetic field is ruled out. The application of magnetic anisotropy as an experimental tool in biology is indicated.

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