[Comparison of effects of 5 and 20 Hz magnetic field on cerebral ischemia in rats]
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Updated: Oct 3, 2026
A Magnetic Resonance Imaging Protocol for Stroke Onset Time Estimation in Permanent Cerebral Ischemia
Published on: September 16, 2017
Objective:
To compare the effects of 5 Hz and 20 Hz magnetic field on cerebral ischemia in rats.
Method:
After cerebral ischemia was produced by ligation of the left general carotid artery, rats were stimulated by magnetic fields of 5 Hz and 20 Hz respectively and pathological changes in neurocytes were observed.
Result:
(1) Different pathological changes were observed in different cells; (2) The extent of damage of pyramidal cells was milder in 5 Hz magnetic field groups than those in the control group, and the effect was not remarkable in the 20 Hz group; (3) The effect on astroglia was worse in 5 Hz group than that in control and 20 Hz group.
Conclusion:
Magnetic field stimulation influences cerebral ischemic reaction with frequency-dependency.
