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  • Articles  (2)
  • Articles: DFG German National Licenses  (2)
  • cyclotron resonance  (2)
  • Wiley-Blackwell  (2)
  • 1995-1999
  • 1985-1989  (2)
  • 1986  (2)
  • Physics  (2)
Collection
  • Articles  (2)
Source
  • Articles: DFG German National Licenses  (2)
Keywords
Publisher
  • Wiley-Blackwell  (2)
Years
  • 1995-1999
  • 1985-1989  (2)
Year
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Low-intensity magnetic fields alter operant behavior in rats (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 7 (1986), S. 349-357 
    Details
    ISSN: 0197-8462
    Keywords: 60 Hz ; cyclotron resonance ; timing discrimination ; multiple schedule ; Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: The present study demonstrates that operant behavior is affected by a combination of a 60-Hz magnetic field and a magnetostatic field 2.6 × 10-5T (about half the geomagnetic field). Rats exposed to this combination for 30 min consistently exhibited changes in the rate and pattern of responding during the differential reinforcement of low rate (DRL) component of a multiple fixed ratio (FR) DRL reinforcement schedule. By contrast, there were no measurable changes following exposure to the static field alone or to the oscillating field alone, even with a 10-fold increase in intensity (5 × 10-5 to 5 × 10-4 Trms). A cyclotron resonance mechanism has been suggested as a possible explanation for the observation that weak static magnetic fields modify the response of in vitro brain tissue to low-frequency magnetic fields. The choice of static field intensity Bo and frequency v in the present study follows from the cyclotron resonance condition v = (1/2π)(q/m)Bo, for singly charged lithium, an element in extensive use in the clinical treatment of affective disorders in humans. The present research is consistent with a cellular cyclotron resonance mechanism and tends to imply a functional dependence of behavior on the geomagnetic field.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bem.2250070402
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dynamic characteristics of membrane ions in multifield configurations of low-frequency electromagnetic radiation (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 7 (1986), S. 177-189 
    Details
    ISSN: 0197-8462
    Keywords: cyclotron resonance ; ion channels ; weak electromagnetic field effects ; ELF bioeffects ; Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: We seek to extend the recent suggestion that classical cyclotron resonance of biologically important ions is implicated in weak electromagnetic field-cell interactions. The motion of charged particles in a constant magnetic field and periodic electric field is examined under the simplifying assumption of no damping. Each of the nine terms of the relative dielectric tensor is found to have a dependence on functions that include the factor (ω2 - ω)-1, where ωB is the gyrofrequency. We also find a plasmalike decomposition of the electric field into oppositely rotating components that could conceivably act to drive oppositely charged ions in the same direction through helical membrane channels. For weak low-frequency magnetic fields, an additional feature arises, namely, periodic reinforcement of the resonance condition with intervals of the order of tens of msec for biological ions such as Li+, Na+, and K+.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bem.2250070208
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    Paper (German National Licenses)
    Fulltext
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