Magnetic bones in human sinuses

  title={Magnetic bones in human sinuses},
  author={R. Robin Baker and Janice G. Mather and John H. Kennaugh},
Studies on the interaction of magnetic fields and biological organisms1 have centred on the influence of applied magnetic fields on the physiology and behaviour of organisms, including humans, and a search for magnetic sources within the organisms themselves. Evidence continues to accumulate that a wide range of organisms, from bacteria to vertebrates, can detect and orient to ambient magnetic fields (for examples see refs 2–4). Since the discovery that magnetic orientation by bacteria was due… Expand
Biological Effects of Stationary Magnetic Fields
An inherent sensitivity to the weak geomagnetic field ( ≃ 50 µT) has been demonstrated for a number of different organisms and animal species. It has been well documented experimentally that weakExpand
Magnetic alignment in mammals and other animals
It is argued that the phenomenon of MA adds a new paradigm that can be exploited for investigation of magnetoreception in mammals. Expand
Magnetoreception and the Search for Magnetic Material in Rodents
The influence of magnetic fields on small mammals, particularly rodents, has been investigated for the past 30 years. Early studies were aimed at determining the effect of anomalous magneticExpand
Enhancement of bone healing by an exogenous magnetic field and the magnetic vaccine
Abstract We have demonstrated in rabbits that in the absence of a terrestial magnetic field, mammalian bone suffers from calcium depletion. This points to the possibility that the earth's field mightExpand
Electroreceptors and Magnetoreceptors
In two groups of teleost fishes, both ampullary and tuberous electroreceptors evolved, the latter specialized for the detection of actively generated electric organ discharges, or EODs. Expand
Chains of single-domain magnetite particles in chinook salmon,Oncorhynchus tshawytscha
SummaryAlthough the presence of magnetite in their tissues is correlated with the ability of different species to detect magnetic fields, proof that the magnetite is involved in magnetoreception hasExpand
Magnetoreception and Biomineralization of Magnetite Fish
Many species from different taxa respond to one or more features of the geomagnetic field (Keeton, 1971, 1972; Lindauer and Martin, 1972; Wiltschko, 1972; Walcott and Green, 1974; Martin andExpand
Magnetic field sensitivity in animals.
  • J. Gould
  • Geology, Medicine
  • Annual review of physiology
  • 1984
The earth's magnetic field changes in a more or less regular way from the magnetic equator, to the magnetic poles, where the lines are vertical and the strength is 60,000 gamm a, and there is a gradient of magnetic intensity and field-line angle. Expand
Detection, Extraction, and Characterization of Biogenic Magnetite
Several difficulties arise when attempts are made to characterize the deposits of magnetite found in metazoans. We are usually forced to deal with very small amounts of material, dispersed inExpand
Intense Static Magnetic Field Induced Bone Growth in Vivo
Pulsed electromagnetic fields have been used as a noninvasive procedure for treating bone fractures and pseudoarthroses in man. the contribution of the magnetic component of pulsed electromagneticExpand


Ferromagnetic coupling to muscle receptors as a basis for geomagnetic field sensitivity in animals
The detection of permanently magnetic material in the neck musculature of pigeons and migratory white-crowned sparrows is reported and it is proposed that a magnetic field detector might involve the coupling of magnetic particles to a sensitive muscle receptor such as a spindle. Expand
Biogenic magnetite as a basis for magnetic field detection in animals.
Indirect evidence suggests that organic magnetite may be a common biological component, and may account for the results of numerous high field and electromagnetic experiments on animals. Expand
Ferromagnetic crystals (magnetite?) in human tissue.
  • J. Kirschvink
  • Biology, Medicine
  • The Journal of experimental biology
  • 1981
A search for magnetic remanence in four intact human adrenal glands which had been removed during autopsy and were frozen quickly in non-magnetic containers found there is a measurable amount of high-coercivity ferromagnetic material present which appears to be finely disseminated throughout the tissue. Expand
Magnetic sense of direction in woodmice for route-based navigation
Orientation to the Earth's magnetic field has been shown for bacteria, planarians, molluscs, insects, elasmobranch fish, salamanders and birds1,2. Recent work indicates that humans may also have aExpand
The significance of stainable iron in sternal marrow sections; its application in the control of iron therapy.
It is shown that in disorders of the blood the prussian blue reaction provides a simple means for the control of iron therapy and can be used to obviate the danger of overdosage whets iron is being administered by the intravenous route. Expand
A Search for Magnetic Field Receptors in Animals
Bacteria, honey bees and homing pigeons, among other species, all contain the mineral magnetite. This paper describes our attempts to localize iron in tissues from honey bees and pigeons.
Bees Have Magnetic Remanence
Honey bees orient to the earth's magnetic field and may be associated with a region of transversely oriented magnetic material in the front of the abdomen that develops in the pupal state and persists in the adults. Expand
Magnetite in Freshwater Magnetotactic Bacteria
Results of Mossbauer spectroscopic analysis applied to whole cells identifies magnetite as a constituent of these magnetic bacteria in a previously undescribed magnetotactic spirillum isolated from a freshwater swamp. Expand
Augmentation of Bone Repair by Inductively Coupled Electromagnetic Fields
The induced voltage field in bone appears to increase the organization and strength of the repair process at 28 days after "fracture" in canine osteotomies. Expand
Pigeons have magnets.
Research on pigeon homing suggests that magnetic field information is used for orientation. The ability of pigeons to sense magnetic fields may be associated with a small, unilateral structureExpand