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Dołączył: 03 Mar 2011
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 Wysłany: Sob 11:11, 12 Mar 2011 Temat postu: hdk daz ula vlt |
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50mT ELF magnetic field exposure on the rabbit EEG 96h of
Or neat 4 ~ 6Hz40 ~ 80 # V in the rhythm-based e I. Since this experiment rabbit EEG power spectrum peaks broadly distributed between 3.0 ~ 6.5Hz and magnetic field conditions under which the EEG in rabbits significantly increased the composition of the paragraph, which many scholars at home and abroad Yun results similar to the m. P. A. IIHeH0 ugly a (L968) to 30mT constant magnetic field on the rabbit head 20s ~ 1min, found that the number of spindles on the EEG increased significantly; Kholodov observed a l00roT rabbit brain has a constant magnetic field of 20 l ~ 3rain, the cortical EEG in the spindle wave and the low number of mantle wave number increased, reptiles, birds, monkeys and people have the same changes: Xuzhou Institute of Medicine around Kai et al (1985) to the surface magnetometer 100 ~ 300mT disk fixed on the rabbit brain cortical sensory motor areas of the extracranial 5 ~ 15rain, found that the number of rabbits to increase EEG slow wave, its amplitude up to 400 # V. The constant magnetic field and ultra-low frequency EEG amplitude appears to increase, decrease frequency of the phenomenon and mammals similar changes in EEG during sleep, sleep early, EEGk increase in the number of spindle waves, sleep spindle wave to a certain level of reduction in the number , bio-electrical rhythm changes - cassette, with high amplitude - cassette wave. r b) of the EEG of the CPS that the synthesis of the two lead EEG power spectrum. Mathematically it is mutually inverse correlation between the function that determines the two lead coordination between EEG. In this experiment, the magnetic field value of the animals CPS-f significantly toward the low frequency band (3.0 ~ 6.sHz), show that the experimental magnetic field can lead EEG in rabbits in the two-paragraph balanced. (C) EEG of IRF is when the system of incentives for the unit impulse 6 (t), the corresponding system output is called impulse response. Mathematically it is the transfer function of the trace transform. For the EEG, the impulse response may indicate that information transfer function characteristics of the brain, this indicator can be more sensitive to reflect the magnetic field effects on brain function】. A. D. Rosen et al 19] in the constant use of l0 ~ 12mT 202 30 ~ 40s, suggest the reason is the magnetic field acting on the ion flow, thereby affecting the excitability of cortical magnetic field of the experimental animals IRF-t was prolonged, this may be due to magnetic field excitatory delay rabbit cerebral cortex, resulting in home information transfer function of rabbit brain to the inhibited state of change. Summary magnetometer 50roT, alternating cycle of 10s super-low frequency magnetic field effects on rabbit systemic continuous 96h, rabbits can make a little power to change, showing rabbits in the low frequency band of EEG (3.o ~ 6.5Hz) ingredients increase, the two lead EEG coherence in the low frequency enhancement, the transfer function of the brain tend to inhibit the other. (◆ plus wood feast t work as well: Zhang Italy, the Lu, Yue Xiu Ming. Huwan Lin and other comrades. This element study point Cheng Hu trial shed. Grateful.)
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