1. Electrographic seizures during low-current thalamic deep brain stimulation in mice.
- Author
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Flores, Francisco J., Dalla Betta, Isabella, Tauber, John, Schreier, David R., Stephen, Emily P., Wilson, Matthew A., and Brown, Emery N.
- Abstract
Deep brain stimulation of the central thalamus (CT-DBS) has potential for modulating states of consciousness, but it can also trigger electrographic seizures, including poly-spike-wave trains (PSWT). To report the probability of inducing PSWTs during CT-DBS in awake, freely-moving mice. Mice were implanted with electrodes to deliver unilateral and bilateral CT-DBS at different frequencies while recording electroencephalogram (EEG). We titrated stimulation current by gradually increasing it at each frequency until a PSWT appeared. Subsequent stimulations to test arousal modulation were performed at the current one step below the current that caused a PSWT during titration. In 2.21% of the test stimulations (10 out of 12 mice), CT-DBS caused PSWTs at currents lower than the titrated current, including currents as low as 20 μ A. Our study found a small but significant probability of inducing PSWTs even after titration and at relatively low currents. EEG should be closely monitored for electrographic seizures when performing CT-DBS in both research and clinical settings. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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