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  • 1
    Electronic Resource
    Electronic Resource
    Didactic discussion of stochastic resonance effects and weak signals (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 17 (1996), S. 242-245 
    Details
    ISSN: 0197-8462
    Keywords: stochastic resonance ; electromagnetic fields ; signal-to-noise ratio ; ELF ; Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: A simple, paradigmatic, model is used to illustrate some general properties of effects subsumed under the label “stochastic resonance.” In particular, analyses of the transparent model show that 1) a small amount of noise added to a much larger signal can greatly increase the response to the signal, but 2) a weak signal added to much larger noise will not generate a substantial added response. The conclusions drawn from the model illustrate the general result that stochastic resonance effects do not provide an avenue for signals that are much smaller than noise to affect biology. A further analysis demonstrates the effects of small signals in the shifting of biologically important chemical equilibria under conditions where stochastic resonance effects are significant. © 1996 Wiley-Liss, Inc.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    Effects of ELF magnetic fields on biological magnetite (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 14 (1993), S. 1-4 
    Details
    ISSN: 0197-8462
    Keywords: ELF fields ; magnetite ; thermal noise ; Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: The effects of 60 Hz magnetic fields of 5 μT (50 mG) or less on biological structures holding magnetite (Fe3O4) are shown to be much smaller than that from thermal agitation; hence such interactions cannot be expected to be biologically significant. © 1993 Wiley-Liss, Inc.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bem.2250140103
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  • 3
    Electronic Resource
    Electronic Resource
    Extremely low frequency electromagnetic fields do not interact directly with DNA (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 19 (1998), S. 136-137 
    Details
    ISSN: 0197-8462
    Keywords: mechanisms ; theoretical models ; transcription ; Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: Blank and Goodman [(1997): Bioelectromagnetics 18:111-115] suggest that weak extremely low frequency (ELF) electric and magnetic fields affect intracellular DNA directly. We show that such a conclusion is not in accord with physical principles. Bioelectromagnetics 19: 136-137, 1998. © 1998 Wiley-Liss, Inc.
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  • 4
    Electronic Resource
    Electronic Resource
    Criticism of Lednev's mechanism for the influence of weak magnetic fields on biological systems (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 13 (1992), S. 231-235 
    Details
    ISSN: 0197-8462
    Keywords: cyclotron resonance ; Ca2+ -binding protein ; ELF fields ; Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: V. V. Lednev has proposed a mechanism that he suggests would allow very weak magnetic fields, at the cyclotron resonance frequency for Ca2+ ions in the earth's field, to induce biological effects. I show that for four independent reasons no such mechanism can operate. © 1992 Wiley-Liss, Inc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bem.2250130307
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  • 5
    Electronic Resource
    Electronic Resource
    Comments on “trivial influences: A doubly stochastic poisson process model permits the detection of arbitrarily small electromagnetic signals” (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 16 (1995), S. 9-10 
    Details
    ISSN: 0197-8462
    Keywords: Elf bioeffects ; Poisson processes ; threshold detection ; Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: I show that Pickard's mathematics cannot properly describe the effects of time-correlated signals in the presence of incoherent noise and cannot, therefore, properly address most signal-to-noise questions. Aside from this objection, I show that Pickard's conclusions follow from an ingenuous definition of “small signals” and do not hold for realistic models of biological processes and more conventional descriptions of “small signals.” © 1995 Wiley-Liss, Inc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bem.2250160104
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  • 6
    Electronic Resource
    Electronic Resource
    Measurements described in a paper by Blackman, Blanchard, Benane, and House are statistically invalid (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 17 (1996), S. 510-511 
    Details
    ISSN: 0197-8462
    Keywords: Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: Blackman et al. [1994] describe an experiment that purports to show that weak 45 Hz magnetic fields inhibit the growth of neurites from PC-12 cells treated with a growth stimulation factor. I present a statistical analysis of the data in that paper that shows that the data were corrupted in some way; hence, the results are invalid. © 1996 Wiley-Liss, Inc.
    Additional Material: 1 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    A physical analysis of the ion parametric resonance model (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Bioelectromagnetics 19 (1998), S. 181-191 
    Details
    ISSN: 0197-8462
    Keywords: mechanisms ; theoretical models ; ion resonances ; Life and Medical Sciences ; Occupational Health and Environmental Toxicology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: We show, in elementary terms, using for the most part only elementary mathematics, the physical bases for the ion parametric resonance model so as to clarify the assumptions and consequences of the model. The analysis shows why, contrary to earlier conclusions, no combination of weak DC and AC magnetic fields can modify the transition rate to the ground state of excited ions. Although reinterpretations of the biological consequences of the motion of the excited ions circumvent that particular objection to the model, those changes introduce other difficulties. Also, other objections to the mechanism still stand; hence the model cannot account for any purported biological effects of weak extremely low frequency magnetic fields. Bioelectromagnetics 19:181-191, 1998. © 1998 Wiley-Liss, Inc.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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