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Device Reduces Epileptic Seizure Duration in Rats

Last Updated: August 10, 2012.

 

Reduces seizure length by applying electrical stimulation in response to a seizure

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A device that applies electrical stimulation to the brain in response to a seizure considerably reduces seizure length in a rat model of epilepsy, according to a study published in the Aug. 10 issue of Science.

FRIDAY, Aug. 10 (HealthDay News) -- A device that applies electrical stimulation to the brain in response to a seizure considerably reduces seizure length in a rat model of epilepsy, according to a study published in the Aug. 10 issue of Science.

Using a rat model of generalized ("petit mal") epilepsy, Antal Berényi, from Rutgers University in Newark, N.J., and colleagues implanted a device in the rat's brains that applied feedback control via a closed-loop transcranial electrical stimulation in response to spike-and-wave episodes.

The researchers found that the device significantly reduced both the duration and the fraction of time spent in spike-and-wave episodes by about 60 percent. The device did not induce arousal during sleep or affect behavior when awake and could potentially be implanted in a cosmetically acceptable way.

"These findings show that brain pattern-triggered feedback transcranial electrical stimulation of cortical neurons can interfere with thalamocortical reverberation during spike-and-wave episodes and effectively reduce their duration," Berényi and colleagues conclude.

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