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1.
Neurosci Lett ; 486(3): 231-4, 2010 Dec 17.
Artigo em Inglês | MEDLINE | ID: mdl-20887774

RESUMO

In three different experiments pairs of unrelated people sitting in two different rooms were exposed simultaneously to different rates of circumcerebral rotations of weak, complex magnetic fields in order to produce "dynamic similarity". Quantitative electroencephalographic (QEEG) measurements were taken for one member of each pair in one room while the other sat in a closed chamber in another room and intermittently observed 5Hz, 8Hz, 10Hz, or 15Hz flashing lights. Reliable increases in QEEG power within specific frequencies over the right parietal region were observed during the similar-frequency light flashes when the shared temporal-spatial complexity of the circumcerebral rotating fields was based on 100ms, the average duration of normal microstates. The development of this experimental procedure could facilitate rational understanding of this class of "coincidence" phenomena.


Assuntos
Córtex Cerebral/fisiologia , Córtex Cerebral/efeitos da radiação , Campos Eletromagnéticos , Potenciais Evocados/fisiologia , Potenciais Evocados/efeitos da radiação , Adolescente , Adulto , Sincronização Cortical/fisiologia , Sincronização Cortical/efeitos da radiação , Eletroencefalografia/métodos , Ambiente Controlado , Feminino , Humanos , Masculino , Testes Neuropsicológicos/normas , Adulto Jovem
2.
Electromagn Biol Med ; 27(4): 365-71, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-19037785

RESUMO

Fifty men and women were exposed to only one of four experimentally generated magnetic fields over the left prefrontal region (above the eyebrow) or to a sham field immediately after the words "true" or "false" were presented following statements of definitions of words for a "foreign language". Three of the patterns (25 Hz, 50 Hz, or burst-firing) with intensities between 1 and 10 microT were presented for 1 s during the refutation process (immediately after the offset of "true" or "false") for specific statements from a total of 28 statements. The fourth pattern was a variable approximately 7-10 Hz (10 nT) field generated from the circuitry that was present continuously during the entire experiment. When the statements were presented again, the groups who had received the burst-firing ("limbic") or 25 Hz pulsed magnetic fields during the refutation process accepted about twice the number of false statements as true compared to those exposed to the 50 Hz field or sham-field conditions. The treatments did not significantly affect the numbers of true statements accepted as false. These results suggest that the appropriately pulsed magnetic field during the refutation process of what one has been told or has heard can increase the probability a person will accept a false statement as true.


Assuntos
Campos Eletromagnéticos , Lobo Frontal/fisiologia , Lobo Frontal/efeitos da radiação , Adolescente , Adulto , Tomada de Decisões/efeitos da radiação , Feminino , Humanos , Masculino , Atividade Motora/efeitos da radiação , Probabilidade , Comportamento Verbal/efeitos da radiação , Adulto Jovem
3.
Electromagn Biol Med ; 27(4): 426-36, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-19037792

RESUMO

Previous research has shown that exposure to circumcerebral weak magnetic fields with different rates of acceleration applied in a counterclockwise rotation around the head was associated with increased estimations of subjective time and as much as a 30% increase in power within the theta range within quantitative electroencephalographic (QEEG) recordings. The largest effect was associated with magnetic fields applied with 20 ms rates of change through each of the successively stimulated, equally spaced, 8 circumcerebral solenoids. The purpose of the present study was to compare the intracerebral power spectra associated with the rotation of the same patterns in either the clockwise or counterclockwise direction. The results generally replicated previous reports and showed enhanced power over regions of the left hemisphere during clockwise rotations and over the right hemisphere during counterclockwise rotations. These results were considered congruent with the creation of "interference patterns" between the rostral-caudal generation of endogenous cerebral magnetic fields putatively associated with consciousness and the spatial direction of the applied rotating magnetic fields.


Assuntos
Campos Eletromagnéticos , Exposição Ambiental , Ritmo Teta/efeitos da radiação , Análise de Variância , Impedância Elétrica , Feminino , Humanos , Masculino , Rotação , Couro Cabeludo , Adulto Jovem
4.
Int J Neurosci ; 117(2): 157-75, 2007 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17365106

RESUMO

The authors have assumed there are specific temporal patterns of complex electromagnetic fields that can access and affect all levels of brain space. The article presents formulae and results that might reveal the required field configurations to obtain this access and to represent these levels in human consciousness. The frequency for the transition from an imaginary to real solution for the four-dimensional human brain was the wavelength of hydrogen whereas the optimal distance in space was the width of a proton or electron. The time required to expand one Planck's length as inferred by Hubble's constant for the proton was about 1 to 3 ms, the optimal resonant "point duration" of our most bioeffective magnetic fields. Calculations indicated the volume of a proton is equivalent to a tube or string with the radius of Planck's length and the longitudinal length of m (the width of the universe). Solutions from this approach predicted the characteristics of many biological phenomena, seven more "dimensions" of space between Planck's length and the level of the proton, and an inflection point between increments of space and time that corresponded to the distances occupied by chemical bonds. The multiple congruencies of the solutions suggest that brain space could contain inordinately large amounts of information reflecting the nature of extraordinarily large increments of space and time.


Assuntos
Encéfalo/fisiologia , Estado de Consciência/fisiologia , Modelos Neurológicos , Neurociências , Humanos , Teoria Quântica
5.
Int J Neurosci ; 117(3): 417-20, 2007 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-17365125

RESUMO

In a within-subject design adult male rats were exposed for 15 min once per day or night to one of two patterns of complex magnetic fields (0.5 to 1 micro T) rotated in space once every 2 s or 20 s through each of the three spatial dimensions and then simultaneously through all three dimensions. Open field behavior was then measured for ambulation, defecation, and grooming. The rats displayed about twice the ambulation after when the fields had been present compared to when they had not. The burst-firing field elicited the greatest ambulation when presented during the night whereas the frequency-modulated pattern elicited the greatest ambulation when presented during the day. These results suggest that robust behavioral changes can occur when rats are exposed for 15 min to complex spatiotemporal configurations of weak magnetic fields.


Assuntos
Campos Eletromagnéticos , Comportamento Exploratório/fisiologia , Percepção Espacial/efeitos da radiação , Animais , Comportamento Animal , Comportamento Exploratório/efeitos da radiação , Masculino , Ratos , Ratos Wistar , Rotação , Fatores de Tempo
6.
Int J Neurosci ; 115(7): 1053-79, 2005 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16051550

RESUMO

In 2 separate experiments involving 39 subjects the incidence of sensing a presence or Sentient Being while being exposed to weak complex magnetic fields over the right hemisphere was moderately correlated with increased global geomagnetic activity during the 3-h periods of the experiences. Analyses of magnetometer values near the laboratory indicated the intensity of the east-west component of the geomagnetic field had been increasing consistently at about 1 pT/s for at least 10 min for a cumulative change of about 15 to 20 nT. The ratios of the durations of alpha rhythms over the temporal lobes compared to the occipital lobes were correlated significantly with both increased geomagnetic activity and the reports of a presence. Removal of the shared variance between the sensed presence and various psychometric inferences of temporal lobe sensitivity and the history of dissociation increased and decreased, respectively, the strength of the partial correlations between geomagnetic activity and the reports of a sensed presence. The results suggest the culturally and historically ubiquitous phenomena of sensed presences are generated by right hemispheric processes that once enhanced by a variety of stimuli, including weak complex magnetic fields, can be encouraged by increased global geomagnetic activity.


Assuntos
Córtex Cerebral/fisiologia , Campos Eletromagnéticos , Lateralidade Funcional/fisiologia , Alucinações/diagnóstico , Percepção/fisiologia , Adolescente , Adulto , Ritmo alfa , Estimulação Elétrica/instrumentação , Estimulação Elétrica/métodos , Feminino , Humanos , Masculino , Parapsicologia , Valores de Referência , Estatísticas não Paramétricas
8.
Int J Biometeorol ; 49(4): 256-61, 2005 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-15726448

RESUMO

To test the hypothesis that sudden unexplained death (SUD) in some epileptic patients is related to geomagnetic activity we exposed rats in which limbic epilepsy had been induced to experimentally produced magnetic fields designed to simulate sudden storm commencements (SSCs). Prior studies with rats had shown that sudden death in groups of rats in which epilepsy had been induced months earlier was associated with the occurrence of SSCs and increased geomagnetic activity during the previous night. Schnabel et al. [(2000) Neurology 54:903-908] found no relationship between SUD in human patients and geomagnetic activity. A total of 96 rats were exposed to either 500, 50, 10-40 nT or sham (less than 10 nT) magnetic fields for 6 min every hour between midnight and 0800 hours (local time) for three successive nights. The shape of the complex, amplitude-modulated magnetic fields simulated the shape and structure of an average SSC. The rats were then seized with lithium and pilocarpine and the mortality was monitored. Whereas 10% of the rats that had been exposed to the sham field died within 24 h, 60% of the rats that had been exposed to the experimental magnetic fields simulating natural geomagnetic activity died (P<.001) during this period. These results suggest that correlational analyses between SUD in epileptic patients and increased geomagnetic activity can be simulated experimentally in epileptic rats and that potential mechanisms might be testable directly.


Assuntos
Morte Súbita Cardíaca/etiologia , Campos Eletromagnéticos , Epilepsia/complicações , Animais , Epilepsia/induzido quimicamente , Epilepsia/mortalidade , Masculino , Ratos , Ratos Wistar , Fatores de Tempo
9.
Int J Neurosci ; 114(8): 1013-24, 2004 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-15527205

RESUMO

Quantitative electroencephalographic activity over the left and right frontal, temporal, parietal, and occipital lobes was obtained on 4 successive weeks in 12 subjects before they were exposed cerebrally for 30 min to one of two configurations of weak complex magnetic fields or to a sham-field condition. The two configurations were Shakti (c Todd Murphy) and the set of 4 solenoids (Koren boxes) generating a burst-firing magnetic field through the temporal lobes. Compared to baseline measurements there were no statistically significant differences in treatments for relative changes in power over these regions within the delta, theta, low alpha, beta, or gamma ranges. However within the high alpha range (10.5 Hz to 13 Hz), there was a significant interaction between session and type of treatment that was due primarily to the Shakti treatment. These changes were congruent with the subjective experiences reported by some users of the technology.


Assuntos
Córtex Cerebral/efeitos da radiação , Estimulação Elétrica/métodos , Eletroencefalografia , Magnetismo , Adulto , Córtex Cerebral/anatomia & histologia , Córtex Cerebral/fisiologia , Desenho Assistido por Computador , Eletroencefalografia/classificação , Eletroencefalografia/métodos , Eletroencefalografia/efeitos da radiação , Feminino , Lateralidade Funcional/fisiologia , Humanos , Masculino , Som , Fatores de Tempo
10.
Int J Neurosci ; 114(9): 1183-93, 2004 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-15370182

RESUMO

A total of 11 men and women were exposed for 5 min each to six different temporal configurations of pulsed magnetic fields that were delivered through serial activation of 8 solenoids in a counterclockwise direction around the head within the horizontal plane above the ears. Twenty-second samples of quantitative electroencephalographic activity within the delta, theta, lower alpha, upper alpha, beta, and gamma regions were collected after each configuration had been activated for 2.5 min. Only the circumcerebral presentation of the first pulse for 25 ms followed by an acceleration of +2 ms to each of the other 7 solenoids (the last duration = 11 ms) resulted in a significant increase in power within the gamma range (35 Hz to 45 Hz) over both frontal and occipital lobes but not over the parietal or temporal lobes. These results suggest topical application of specific spatial-temporal configurations of magnetic fields may affect the recursive creation of the rostral-caudal waves of cohesive fields that might produce consciousness.


Assuntos
Eletroencefalografia , Campos Eletromagnéticos , Lobo Frontal/fisiologia , Magnetismo , Lobo Occipital/fisiologia , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Rotação
11.
Int J Neurosci ; 114(10): 1259-76, 2004 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-15370185

RESUMO

The application of a weak (1 microTesla) complex magnetic field pattern with a relevant electrophysiological signature produced an analgesic response in rats to thermal stimuli when the pattern was presented once every 4 sec for 30 min through iron-core solenoids. In one experiment, the burst-firing pattern was presented once every 4 s for 30 min and restricted to the positive polarity, negative polarity or a bipolar equivalent. The strongest analgesia occurred when the burst-firing pattern was presented with positive polarity or as the typical bipolar signal. Administrations of the burst-firing pattern once per week for four consecutive weeks produced analgesia that was clearly evident during the first, third, and fourth weeks but not during the second week of treatment. A telephone sensor coil (that can be readily obtained from local electronic shops) was then used instead of the solenoids along with an audio (.wav) file to generate the magnetic field; the analgesia was still apparent. However, when the magnetic pattern was generated from a compact disc source the analgesia was not evoked. The current results suggest that these fields can be generated through simple commercial devices controlled by available computer software.


Assuntos
Campos Eletromagnéticos , Hiperalgesia/terapia , Limiar da Dor/efeitos da radiação , Animais , Relação Dose-Resposta à Radiação , Eletrodos , Masculino , Teste de Materiais , Medição da Dor , Ratos , Ratos Wistar , Tempo de Reação/efeitos da radiação , Fatores de Tempo
12.
Pharmacol Biochem Behav ; 78(2): 217-27, 2004 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-15219761

RESUMO

In several experiments, robust analgesia (equivalent to about 4 mg/kg of morphine) in male rats to thermal stimuli following exposures to weak (1 microT) complex magnetic fields was explored. The analgesia occurred when patterns of magnetic fields with burst-firing-like configurations were presented for 30 min once every approximately 4 s. The analgesic effects were intensity dependent. A different frequency-modulated pattern produced analgesia more quickly. The analgesic effects following exposure to the burst-firing magnetic fields were augmented conspicuously by preinjections of morphine (4 mg/kg) or agmatine (10 mg/kg), but blocked by naloxone (1 mg/kg). The results of these experiments suggest that rational design of the temporal structure of weak magnetic fields may be a novel, inexpensive, and reliable technique for elevating thresholds to some classes of painful stimuli.


Assuntos
Analgesia/métodos , Campos Eletromagnéticos , Temperatura Alta/efeitos adversos , Medição da Dor/métodos , Analgésicos/farmacologia , Animais , Masculino , Medição da Dor/efeitos dos fármacos , Ratos , Ratos Wistar
13.
Int J Neurosci ; 113(1): 119-39, 2003 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-12691004

RESUMO

The behavioral effects of the nitric oxide synthase inhibitor N-nitro-L-arginine methyl ester (L-NAME), when perinatally (2 d prenatal-14 d postnatal) co-administered with extremely low frequency magnetic fields, were examined in weanling and adult rats. Litters of rat pups and their dams were exposed continuously to biphasic pulsed fields presented once every 2 s. The magnetic fields were amplitude modulated in successively increasing and decreasing steps (each 30 min) between 0 and 1.8 microT or between 0 to 13 nanoT (reference field) during 4-h periods (6 periods per day). These two treatments were subdivided into dams that received tap water and dams that received 1.0 g/L L-NAME in tap water. The behavioral sequelae to these treatments for 242 progeny from 41 litters were followed from weaning (1 wk after termination of treatment) into adulthood. Compared to exposures to water and nanoT magnetic fields, perinatal exposures to the microT magnetic fields or to L-NAME in the maternal water supply were associated with increased activity levels when the rats were tested as weanling, but decreased activity levels when the rats were tested as adults. However, the activity of rats that received the combination of L-NAME and microT magnetic fields did not differ significantly from the activity of the rats that had received water and the nanoT fields. Long-term (adulthood) effects of these perinatal treatments on associative learning, as inferred by learned fear to contextual stimuli, were not evident. These results indicate that L-NAME and this particular pattern of magnetic field antagonized one another when co-administered during the perinatal period.


Assuntos
Fenômenos Eletromagnéticos/instrumentação , Inibidores Enzimáticos/farmacologia , NG-Nitroarginina Metil Éster/farmacologia , Animais , Animais Recém-Nascidos , Comportamento Animal , Condicionamento Psicológico/efeitos dos fármacos , Medo , Feminino , Masculino , Óxido Nítrico/metabolismo , Ratos , Ratos Wistar
14.
Percept Mot Skills ; 97(3 Pt 1): 877-94, 2003 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-14738355

RESUMO

Four pairs of adult siblings served once as either the stimulus or the response person in two sessions separated by one week. While the brain of the stimulus person, who was seated in a closed chamber, was exposed successively to six different complex magnetic fields for 5 min. each quantitative monopolar electroencephalographic measurements over the frontal, temporal, parietal, and occipital lobes were collected by computer for the response person who was seated in another room. The six configurations of fields served as different stimulus patterns and had been designed to affect consciousness. As predicted theoretically, a significant increase in electroencephalographic power within the 5.0-Hz to 6.0-Hz band over the frontal and occipital lobes was noted for the response persons when the stimulus persons received one of the six specific patterns of weak (1 microTesla range) magnetic fields. This magnetic stimulus was presented for 100 msec. with changes in rate of 20 msec. to each of the eight solenoids that were equally spaced in the horizontal plane around the head of the stimulus person. Derivatives within this narrow frequency band had been hypothesized to be a source of the "binding factor" for the cohesive cerebrogenic electromagnetic fields producing consciousness. The results suggest that an appropriate altered state of one brain can effect specific predictable frequencies of the electroncephalographic activity of another distant brain which is genetically related.


Assuntos
Encéfalo/anatomia & histologia , Encéfalo/fisiologia , Cognição , Campos Eletromagnéticos , Robótica , Ritmo Teta , Adulto , Eletroencefalografia , Feminino , Humanos , Masculino
15.
Percept Mot Skills ; 97(3 Pt 1): 951-2, 2003 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-14738362

RESUMO

To test the hypothesis that the numbers of "sensed presences" induced by the application of weak (1 microTesla) magnetic fields over the right hemisphere was subject to an optimal time of presentation, digital-to-analogue computer generated 7-Hz sine-waves were applied with point ("pixel") durations of 1, 3, 5, 7, 10, or 20 msec. for 5 min. each in a sequential counterbalanced order for six subjects. The proportion of numbers of sensed presences reported along the subjects' left sides and the proportions of electroencephalographic spikes over the occipital regions were greatest when 1- or 10-msec. point durations were employed. These results indicate that the specific duration of each successive field strength composing a complex sequence should be considered when designing optimal configurations for intercalating with neurocognition.


Assuntos
Encéfalo/fisiologia , Campos Eletromagnéticos , Lateralidade Funcional , Percepção , Eletroencefalografia , Feminino , Humanos , Masculino , Lobo Occipital/fisiologia
16.
Percept Mot Skills ; 95(2): 671-86, 2002 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-12434867

RESUMO

Relative power within the delta, theta, low-alpha, high-alpha, and gamma electroencephalographic spectra of 8 human volunteers was recorded over the left and right frontal, temporal, parietal, and occipital lobes during and after the circumcerebral application through an array of 8 solenoids of 6 different configurations of weak (5 to 10 microTesla) magnetic fields. The solenoids were equally spaced around the subject's head along a horizontal plane above the ears. An approximately 30% increase in power within the theta band occurred transcerebrally during the application of a specific configuration, previously shown to affect subjective time, involving 20-msec. rates of change in the duration of delivery of the magnetic fields to each successive solenoid. Compared to the left hemisphere, the right hemisphere displayed a 20% increase in power within the 5.0- to 5.9-Hz range for all 6 configurations. The results suggest that very complex magnetic fields with the appropriate temporal parameters rotated around and within brain space can interact with the cerebral processes, measured as specific hands of frequencies, generating consciousness. Implications for the roles of hippocampal theta activity, cortical resonance, and Goldstone bosons in these processes are discussed.


Assuntos
Estado de Consciência/fisiologia , Eletroencefalografia , Campos Eletromagnéticos , Ritmo Teta , Adulto , Córtex Cerebral/fisiologia , Dominância Cerebral/fisiologia , Feminino , Análise de Fourier , Hipocampo/fisiologia , Humanos , Masculino , Processamento de Sinais Assistido por Computador
17.
Percept Mot Skills ; 94(3 Pt 1): 927-49, 2002 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12081299

RESUMO

In the present study, the artist Ingo Swann, who helped develop the process of remote viewing (awareness of distant objects or places without employing normal senses), was exposed during a single setting of 30 min. to specific patterns of circumcerebral magnetic fields that significantly altered his subjective experiences. Several times during subsequent days, he was asked to sit in a quiet chamber and to sketch and to describe verbally distant stimuli (pictures or places) beyond his normal senses. The proportions of unusual 7-Hz spike and slow wave activity over the occipital lobes per trial were moderately correlated (rho=.50) with the ratings of accuracy between these distal, hidden stimuli and his responses. A neuropsychological assessment and Magnetic Resonance Imaging indicated a different structural and functional organization within the parieto-occipital region of the subject's right hemisphere from organizations typically noted. The results suggest that this type of paranormal phenomenon, often dismissed as methodological artifact or accepted as proofs of spiritual existence, is correlated with neurophysiological processes and physical events. Remote viewing may be enhanced by complex experimentally generated magnetic fields designed to interact with the neuromagnetic "binding factor" of consciousness.


Assuntos
Arte , Conscientização/fisiologia , Córtex Cerebral/fisiologia , Eletroencefalografia , Percepção de Forma/fisiologia , Imaginação/fisiologia , Testes Neuropsicológicos , Parapsicologia , Mapeamento Encefálico , Dominância Cerebral/fisiologia , Humanos , Magnetismo , Masculino , Pessoa de Meia-Idade , Lobo Occipital/fisiologia , Lobo Parietal/fisiologia , Percepção Espacial/fisiologia
18.
Percept Mot Skills ; 95(3 Pt 1): 989-98, 2002 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-12509207

RESUMO

In 2002 Persinger, Roll, Tiller, Koren, and Cook considered whether there are physical processes by which recondite information exists within the space and time of objects or events. The stimuli that compose this information might be directly detected within the whole brain without being processed by the typical sensory modalities. We tested the artist Ingo Swann who can reliably draw and describe randomly selected photographs sealed in envelopes in another room. In the present experiment the photographs were immersed continuously in repeated presentations (5 times per sec.) of one of two types of computer-generated complex magnetic field patterns whose intensities were less than 20 nT over most of the area. WINDOWS-generated but not DOS-generated patterns were associated with a marked decrease in Mr. Swann's accuracy. Whereas the DOS software generated exactly the same pattern, WINDOWS software phase-modulated the actual wave form resulting in an infinite bandwidth and complexity. We suggest that information obtained by processes attributed to "paranormal" phenomena have physical correlates that can be masked by weak, infinitely variable magnetic fields.


Assuntos
Campos Eletromagnéticos/efeitos adversos , Parapsicologia , Arte , Humanos , Masculino , Microcomputadores , Reconhecimento Visual de Modelos
19.
Percept Mot Skills ; 92(3 Pt 1): 673-4, 2001 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-11453191

RESUMO

Magnetic field measurements for power frequencies were measured continuously over two 24-hr. periods for a small house in which two adults who exhibited above normal occurrences of complex partial epileptic-like experiences had reported "waves of fear", tactile sensations, nightmares, apparitions, and a sensed presence. The experiences occurred within an area in which irregular amplitude modulations between 1 microT and 5 microT (50 mG) from 60-Hz sources, with durations of a few seconds to several tens of seconds, were measured. This case suggests that transient, complex temporal patterns of power-frequency magnetic fields generated by less than optimal grounding in dwellings and telluric currents may be sufficient to evoke experiences in the brains of sensitive individuals. Cultural labels, applied by the experients, then affect the explanations and expectancies for these experiences.


Assuntos
Comportamento/fisiologia , Campos Eletromagnéticos , Eletrônica , Parapsicologia , Cultura , Planeta Terra , Humanos , Fatores de Tempo
20.
Percept Mot Skills ; 92(1): 183-92, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11322585

RESUMO

A total of 45 litters were exposed during their entire prenatal development to one of two complex patterns of magnetic fields whose strengths varied within one of four intensity ranges between 10 nT and 1,000 nT or to sham-field conditions. The litters exposed to the most complex pattern, composed of 50 200-msec. presentations of different pulses for 10 sec. every 50 sec., displayed more ambulation in an open field at 21 days of age than the litters that had been exposed continuously to a repetitive frequency-modulated field or to sham-field conditions. This treatment explained 25% of the variance in the numbers of squares traversed. The results suggest that complexity of the applied magnetic field during prenatal development may be more important than intensity for permanently affecting neuronal organization and behavior.


Assuntos
Comportamento Animal/fisiologia , Encéfalo/embriologia , Campos Eletromagnéticos , Expressão Gênica/genética , Locomoção/genética , Neurônios/fisiologia , Animais , Masculino , Ratos , Ratos Wistar
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