Abstract:
:A number of studies have shown that power frequency magnetic fields may affect spatial memory functions in rodents. An experiment was performed using a spontaneous object recognition task to investigate if nonspatial working memory was similarly affected. Memory changes in adult, male C57BL/6J mice were assessed by measuring the relative time within which the animals explored familiar or novel stimulus objects. Between initial testing and retesting, the animals were exposed for 45 min to a 50 Hz magnetic field at either 7.5 microT, 75 microT or 0.75 mT. Other animals were sham-exposed with ambient fields of less than 50 nT. No significant field-dependent effects on the performance of the task were observed at any flux density (for all measures, P > 0.05). These data provide no evidence to suggest that nonspatial working memory was affected in mice by acute exposure to an intense 50 Hz magnetic field.
journal_name
Bioelectromagneticsjournal_title
Bioelectromagneticsauthors
Sienkiewicz ZJ,Bartram R,Haylock RG,Saunders RDdoi
10.1002/1521-186x(200101)22:1<19::aid-bem3>3.0.co;subject
Has Abstractpub_date
2001-01-01 00:00:00pages
19-26issue
1eissn
0197-8462issn
1521-186Xpii
10.1002/1521-186X(200101)22:1<19::AID-BEM3>3.0.CO;journal_volume
22pub_type
杂志文章abstract::This study reports the continuous 8-h monitoring of data on extremely low-frequency magnetic fields (ELF-MF) relating to 14 children and 35 teachers in 11 elementary schools in Northern Taiwan. It was anticipated that the subjects in two of these campuses would have elevated exposure to ELF-MF as a result of their clo...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20431
更新日期:2008-10-01 00:00:00
abstract::This paper investigates the effect of relevant physical parameters on transient temperature elevation induced in human tissues by electromagnetic waves in the terahertz (THz) band. The problem is defined by assuming a plane wave, which, during a limited time interval, normally impinges on the surface of a 3-layer mode...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21842
更新日期:2014-07-01 00:00:00
abstract::Serial longitudinal and transverse sections were prepared from roots of Cucumis sativus and Cucurbita maxima that had been exposed/sham-exposed to 60-Hz electric fields for 0-2 days. Field exposures were selected to produce a 10-20% or a 70-80% growth inhibition in whole roots of both species. Cortical cell length and...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250080108
更新日期:1987-01-01 00:00:00
abstract::Magnetite, the only known biogenic material with ferromagnetic properties, has been identified as a biochemical precipitate in three of the five kingdoms of living organisms, with a fossil record that now extends back nearly 2 billion years. In the magnetotactic bacteria, protoctists, and fish, single-domain crystals ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,评审
doi:10.1002/bem.2250100304
更新日期:1989-01-01 00:00:00
abstract::The level of exposure of laboratory animals to 60-Hz electric fields is commonly specified in terms of the unperturbed field strength present before the introduction of experimental subjects and their cages. In the research reported in this paper, rats were housed in two parallel rows in 12.4 cm x 25.1 cm x 10.2 cm hi...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250020105
更新日期:1981-01-01 00:00:00
abstract::Published and new data for grounded humans, swine, and rats exposed to vertical, 60-Hz electric fields are used to determine field strengths at the surfaces of the bodies and average components of induced-current density along the axes of the bodies. At the tops of the bodies, surface electric fields are increased (en...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250010203
更新日期:1980-01-01 00:00:00
abstract::Fertile eggs of the Coturnix quail were exposed twice a day for 30 min to 2.45-GHz continuous wave radiation at power densities of 25 or 50 mW cm-2 throughout the 17-day incubation period. Other eggs were exposed to 20 degrees C or 24 degrees C temperatures twice daily. Repeated exposures to 20 degrees C, 24 degrees C...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250060307
更新日期:1985-01-01 00:00:00
abstract::Exposure systems that provide good magnetic field uniformity, minimum stray fields, and minimal heating, vibration, and hum, as well as capability for true sham exposure in which current flows in the coils, are needed to determine rigorously the biological effects of weak magnetic fields. Designs based on acrylic poly...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250150610
更新日期:1994-01-01 00:00:00
abstract::The use of wireless digital communication devices like GSM, WCDMA, HSPA, DECT, and WiFi changes the exposure of electromagnetic waves toward the user. Concentrating on the power variations on a slow and fast time scale, these new systems are discussed. Experimental results for both uplink and downlink are included for...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20569
更新日期:2010-05-01 00:00:00
abstract::The potential effects of radiofrequency (RF) exposure on the genetic material of cells are very important to determine since genome instability of somatic cells may be linked to cancer development. In response to genetic damage, the p53 protein is activated and can induce cell cycle arrest allowing more time for DNA r...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21744
更新日期:2013-01-01 00:00:00
abstract::Daily preexposure and postexposure mass measurements of 65 rats (young males and females, old males) a proprietary pulsed wound healing field, pulsed electromagnetic field, (PEMF), or their control fields for 4 h/day for 21 days. Statistical analysis of mass changes over time showed that young rats exposed to PEMF los...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.92
更新日期:2002-01-01 00:00:00
abstract::In epidemiological studies of electromagnetic fields and health effects, exposure classification is crucial. There is no generally accepted biophysical interaction mechanism, but many studies are based on the hypothesis of a causal relationship with the strength of magnetic field. Some definition of the magnitude of e...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(SICI)1521-186X(1996)17:3<209::AID-BEM6>3.
更新日期:1996-01-01 00:00:00
abstract::In the clinic, although several pharmacological agents or surgical procedures are used to treat diabetes and diabetes-induced neuropathic pain, their success has been limited. Therefore, development of different alternatives in treatments is very important. The purpose of this study was to determine the efficacy of pu...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20524
更新日期:2010-01-01 00:00:00
abstract::The objective of this study was to investigate if persons with implantable medical devices are intrinsically protected by the current electromagnetic safety guidelines. For inter-laboratory comparisons, the U.S. Food and Drug Administration has defined a generic implant as consisting of an insulated wire with noninsul...
journal_title:Bioelectromagnetics
pub_type: 临床试验,杂志文章
doi:10.1002/bem.21695
更新日期:2012-07-01 00:00:00
abstract::The widespread use of mobile phones and Wi-Fi-based communication devices makes exposure to radiofrequency electromagnetic fields (RF-EMF) unavoidable. Previous experiments have revealed the tumor-promoting effects of non-ionizing RF-EMF in adult carcinogen-treated mice in utero. To extend these investigations, we tes...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.22301
更新日期:2020-12-01 00:00:00
abstract::Rat PC12 pheochromocytoma cells have been treated with nerve growth factor and then exposed to athermal levels of a packet-modulated radiofrequency field at 836.55 MHz. This signal was produced by a prototype time-domain multiple-access (TDMA) transmitter that conforms to the North American digital cellular telephone ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(sici)1521-186x(1997)18:3<223::aid-bem4>3.
更新日期:1997-01-01 00:00:00
abstract::The fundamental intramolecular frequency of a globular protein can be obtained from the measurements of acoustic velocities of bulk protein matter. This lowest frequency for common size molecules is shown to be above several hundred GHz. All modes below this frequency would then be intermolecular modes or bulk modes o...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20013
更新日期:2004-09-01 00:00:00
abstract::In a previous study, we showed that operators of radiofrequency (RF) plastic sealers, RF operators (n = 35) had a lower heart rate during nighttime compared to a control group (n = 37). We have analyzed the heart rate variability (HRV) on the same group of people to better understand the possible underlying rhythm dis...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20276
更新日期:2007-01-01 00:00:00
abstract::Electric fields, which were equivalent to those generated by medical devices, were applied to cultured neuroblastoma cells (mouse and human) to test for morphological damage and to establish damage thresholds. Each of two methods of applying fields permitted flow of electrical current and minimized exposure of cells t...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250120505
更新日期:1991-01-01 00:00:00
abstract::The MobilEe-study was the first cross-sectional population-based study to investigate possible health effects of mobile communication networks on children using personal dosimetry. Exposure was assessed every second resulting in 86,400 measurements over 24 h for each participant. Therefore, a functional approach to an...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20477
更新日期:2009-05-01 00:00:00
abstract::Electric fields induced in a conductive body by the magnetic field of a current-carrying wire were analyzed theoretically and experimentally to assess the dosimetric importance of highly nonuniform, field-exposure conditions. Experimentation revealed that a 60-Hz magnetic field was inversely proportional to the radius...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250130305
更新日期:1992-01-01 00:00:00
abstract::Electromagnetic sensibility refers to the ability to perceive the electromagnetic field (EMF) without necessarily developing health symptoms attributed to EMF exposure. A large sample of young healthy adults (n = 84) performed two forced-choice tasks on the perception of the GSM mobile phone EMF (902 MHz pulsed at 217...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20375
更新日期:2008-02-01 00:00:00
abstract::This study aimed to explore effects of static magnetic fields (SMFs) of moderate intensity (3-50 mT) as biophysical stimulators of proliferation and osteoblastic differentiation of human bone marrow-derived mesenchymal stem cells (MSCs). MSCs were exposed to SMFs of three intensities: 3, 15, and 50 mT. Proliferation w...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21903
更新日期:2015-04-01 00:00:00
abstract::The aim of this study was to elucidate the possible effects of short-term exposure to a 1439-MHz electromagnetic field (EMF) employing time division multiple access (TDMA), which is the basis of the Japanese Personal Digital Cellular system, on estrogenic activity in rats. Sixty-four ovariectomized female Sprague-Dawl...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20593
更新日期:2010-10-01 00:00:00
abstract::We sought to determine whether a 6-week exposure to a 50-Hz rotating magnetic field influences melatonin synthesis by 11-18 week-old Wistar-King male rats. Rats were exposed continuously to a rotating magnetic field at 1, 5, 50, or 250 microT (spatial vector rms) for 6 weeks, except for twice-weekly breaks of about 2 ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250140203
更新日期:1993-01-01 00:00:00
abstract::There are large disparities between basic restrictions for exposure to extremely low-frequency (0-3 kHz) Electric and Magnetic Fields set by two major international bodies. Both bodies agree that these basic restrictions should prevent neuro-stimulatory effects: the retinal phosphene at frequencies up to a few hundred...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20412
更新日期:2008-09-01 00:00:00
abstract::This paper investigates the influence of pulsed magnetic fields (PMFs) on amplitude of evoked, compound action potential (CAP) recorded from the segments of sciatic nerve in vitro. PMFs were applied for 30 min at frequency of 0.16 Hz and intensity of 15 mT. In confirmation of our previous reports, PMF exposure enhance...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21917
更新日期:2015-07-01 00:00:00
abstract::We have previously reported that the exposure to an abnormal magnetic field simulating the one encountered by the International Space Station (ISS) orbiting around the Earth may enhance autonomic response to emotional stimuli. Here we report the results of the second part of that study which tested whether this field ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20438
更新日期:2009-01-01 00:00:00
abstract::The present article reviews the basic principles of a new approach to the characterization of pulmonary disease. This approach is based on the unique nuclear magnetic resonance (NMR) properties of the lung and combines experimental measurements (using specially developed NMR techniques) with theoretical simulations. T...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,评审
doi:10.1002/(sici)1521-186x(1999)20:4+<110::aid-bem13>
更新日期:1999-01-01 00:00:00
abstract::We study the effect of microwaves at 2,450 MHz on protein unfolding using surface plasmon resonance sensing. Our experimental method makes use of the fact that unfolding proteins tend to bind to chaperones on their unfolding pathway and this attachment is readily monitored by surface plasmon resonance. We use the prot...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20382
更新日期:2008-05-01 00:00:00