Low-frequency repetitive transcranial magnetic simulation prevents chronic epileptic seizure

Neural Regen Res. 2013 Sep 25;8(27):2566-72. doi: 10.3969/j.issn.1673-5374.2013.27.008.

Abstract

Although low-frequency repetitive transcranial magnetic simulation can potentially treat epilepsy, its underlying mechanism remains unclear. This study investigated the influence of low-frequency re-petitive transcranial magnetic simulation on changes in several nonlinear dynamic electroence-phalographic parameters in rats with chronic epilepsy and explored the mechanism underlying petitive transcranial magnetic simulation-induced antiepileptic effects. An epilepsy model was es-tablished using lithium-pilocarpine intraperitoneal injection into adult Sprague-Dawley rats, which were then treated with repetitive transcranial magnetic simulation for 7 consecutive days. Nonlinear electroencephalographic parameters were obtained from the rats at 7, 14, and 28 days post-stimulation. Results showed significantly lower mean correlation-dimension and Kolmogo-rov-entropy values for stimulated rats than for non-stimulated rats. At 28 days, the complexity and point-wise correlation dimensional values were lower in stimulated rats. Low-frequency repetitive transcranial magnetic simulation has suppressive effects on electrical activity in epileptic rats, thus explaining its effectiveness in treating epilepsy.

Keywords: electroencephalogram; epilepsy; epileptic discharge; epileptic seizure; grant-supported paper; neural regeneration; neuroregeneration; nonlinear analysis; nonlinear parameters; repetitive transcranial magnetic stimulation.