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Exposures to a hypomagnetic field can affect biological processes. Recently, it has been observed that hypomagnetic field exposure can adversely affect adult hippocampal neurogenesis and hippocampus-dependent cognition in mice. In the same…

Neurons and Cognition · Quantitative Biology 2021-10-26 Rishabh , Hadi Zadeh-Haghighi , Dennis Salahub , Christoph Simon

Adult hippocampal neurogenesis and hippocampus-dependent cognition in mice have been found to be adversely affected by hypomagnetic field exposure. The effect concurred with a reduction of reactive oxygen species in the absence of the…

Biological Physics · Physics 2022-10-12 Jess Ramsay , Daniel R. Kattnig

The radical pair mechanism is a leading hypothesis in animal magnetic navigation. This mechanism associates the magnetic sense with the visual system, the radical pairs in cryptochromes of the eye retina being specialized magnetic receptors…

Biological Physics · Physics 2018-02-09 Vladimir N. Binhi , Frank S. Prato

A large and growing body of research shows that weak magnetic fields can significantly influence various biological systems, including plants, animals, and humans. However, the underlying mechanisms behind these phenomena remain elusive. It…

Biological Physics · Physics 2022-04-21 Hadi Zadeh-Haghighi , Christoph Simon

Radical pair recombination reactions are known to be sensitive to the application of both low and high magnetic fields. The application of a weak magnetic field reduces the singlet yield of a singlet-born radical pair, whereas the…

In order to investigate whether the radical pair mechanism (RPM) can explain the effects of telecommunication frequency radiation on reactive oxygen species production, we modelled the effects of oscillating magnetic fields on radical pair…

Biological Physics · Physics 2024-07-08 Owaiss Talbi , Hadi Zadeh-Haghighi , Christoph Simon

The N-methyl-D-aspartate receptor is a prominent player in brain development and functioning. Perturbations to its functioning through external stimuli like magnetic fields can potentially affect the brain in numerous ways. Various studies…

Biological Physics · Physics 2023-10-27 Parvathy S Nair , Hadi Zadeh-Haghighi , Christoph Simon

The exact mechanism behind general anesthesia remains an open question in neuroscience. It has been proposed that anesthetics selectively prevent consciousness and memory via acting on microtubules (MTs). It is known that the magnetic field…

Neurons and Cognition · Quantitative Biology 2021-09-30 Hadi Zadeh-Haghighi , Christoph Simon

Drosophila's circadian clock can be perturbed by magnetic fields, as well as by lithium administration. Cryptochromes are critical for the circadian clock. Further, the radical pairs in cryptochrome also can explain magnetoreception in…

Biological Physics · Physics 2021-07-23 Hadi Zadeh-Haghighi , Christoph Simon

The Radical Pair Mechanism is a canonical model for the magnetosensitivity of chemical reaction processes. The key ingredient of this model is the hyperfine interaction that induces a coherent mixing of singlet and triplet electron spin…

Chemical Physics · Physics 2018-09-12 Robert H. Keens , Salil Bedkihal , Daniel R. Kattnig

The yield of chemical reactions involving intermediate radical pairs is influenced by magnetic fields well beyond the levels expected from energy considerations. This dependence can be traced back to the microscopic dynamics of electron…

Biological Physics · Physics 2013-05-29 Gian Giacomo Guerreschi , Markus Tiersch , Ulrich E. Steiner , Hans J. Briegel

Near-zero magnetic fields, called hypomagnetic fields, are known to impact biological phenomena, including developmental processes, the circadian system, neuronal and brain activities, DNA methylation, calcium balance in cells, and many…

Quantum Physics · Physics 2023-01-13 Hadi Zadeh-Haghighi , Rishabh Rishabh , Christoph Simon

Weak magnetic fields and isotopes have been shown to influence biological processes; however, the underlying mechanisms remain poorly understood, particularly because the corresponding interaction energies are far below thermal energies,…

In this paper, we analyze biological effects produced by magnetic fields in order to elucidate the physical mechanisms, which can produce them. We show that there is a chierarchy of such mechanisms and that the mutual interplay between them…

Biological Physics · Physics 2014-11-25 Larissa Brizhik

It is known that bipolar disorder and its lithium treatment involve the modulation of oxidative stress. Moreover, it has been observed that lithium's effects are isotope-dependent. Based on these findings, here we propose that lithium…

Biological Physics · Physics 2021-03-23 Hadi Zadeh-Haghighi , Christoph Simon

The majority of solar-type stars reside in multiple systems, especially binaries. They form in dense cores of molecular clouds that are observed to be significantly magnetized. Our previous study shows that magnetic braking can tighten the…

Solar and Stellar Astrophysics · Physics 2013-08-06 Bo Zhao , Zhi-Yun Li , Kaitlin M. Kratter

The radical-pair mechanism is understood to underlie the magnetic navigation capability of birds and possibly other species. Experiments with birds have provided indirect and in cases conflicting evidence on the actual existence of this…

Biological Physics · Physics 2016-07-28 K. Mouloudakis , I. K. Kominis

It is pointed, that effects of refraction of electromagnetic radiation in the medium, formed by the magnetized vacuum, become essential already for relatively soft photons, not hard enough to create an electron-positron pair, including…

High Energy Physics - Theory · Physics 2007-05-23 A. E. Shabad

The origin of magnetoresistance is bipolar organic materials is the influence of magnetic field on the dynamics of recombination within localized electron-hole pairs. Recombination from the $S$ spin-state of the pair in preceded by the…

Disordered Systems and Neural Networks · Physics 2023-06-14 M. E. Raikh

We investigate the electron-positron pair production process in an oscillating field with modulated amplitude in quantum kinetic formalism. By comparing the number density in field with and without modulation, we find that the pair…

Quantum Physics · Physics 2019-05-07 Ibrahim Sitiwaldi , Bai-Song Xie
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