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Anticonvulsant Effects of Transcranial Direct‐current Stimulation (tDCS) in the Rat Cortical Ramp Model of Focal Epilepsy
Open accessAbstract
Summary: Purpose:Weak direct currents induce lasting alterations of cortical excitability in animals and humans, which are controlled by polarity, duration of stimulation, and current strength applied. To evaluate its anticonvulsant potential, transcranial direct current stimulation (tDCS) was tested in a modified cortical ramp‐stimulation model of focal epilepsy. Methods:The threshold for localized seizure activity (TLS) was determined in freely moving rats by applying a single train of rising bipolar pulses through a unilateral epicranial electrode. After tDCS, TLS was determined repeatedly for 120 min at intervals of 15 min. The first group of animals received two sessions of cathodal tDCS at 100 μA, one for 30 and one for 60 min. A third session consisted of 60 min of anodal tDCS. A second group received cathodal tDCS at 200 μA for 15 and for 30 min, as well as anodal tDCS for 30 min. Results:Sixty minutes of cathodal tDCS at 100 μA resulted in a TLS increase lasting for ≥2 h. When the intensity was increased to 200 μA, a similar lasting TLS elevation occurred after a stimulation of just 30‐min duration. In contrast, anodal tDCS at identical stimulation durations and current strengths had no significant effect on TLS. Conclusions:The anticonvulsive effect induced by cathodal tDCS depends on stimulation duration and current strength and may be associated with the induction of alterations of cortical excitability that outlast the actual stimulation. The results lead to the reasonable assumption that cathodal tDCS could evolve as a therapeutic tool in drug‐refractory partial epilepsy.
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Nitsche, M. A., & Paulus, W. (2000) · The Journal of Physiology · doi:10.1111/j.1469-7793.2000.t01-1-00633.x · Cited by 5,656
Self-citationSustained excitability elevations induced by transcranial DC motor cortex stimulation in humans
Nitsche, M. A., & Paulus, W. (2001) · Neurology · doi:10.1212/wnl.57.10.1899 · Cited by 2,617
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Cited by
Transcranial direct current stimulation: State of the art 2008
Nitsche, M. A., Cohen, L. G., Wassermann, E. M., Priori, A., Lang, N., Antal, A., Paulus, W., Hummel, F., Boggio, P. S., Fregni, F., et al. (2008) · Brain Stimulation · doi:10.1016/j.brs.2008.06.004 · Cited by 3,057
Self-citationDatta, A., Bansal, V., Diaz, J., Patel, J., Reato, D., & Bikson, M. (2009) · Brain Stimulation · doi:10.1016/j.brs.2009.03.005 · Cited by 1,290
Noninvasive Human Brain Stimulation
Wagner, T., Valero-Cabre, A., & Pascual-Leone, A. (2007) · Annual Review of Biomedical Engineering · doi:10.1146/annurev.bioeng.9.061206.133100 · Cited by 873
Reato, D., Rahman, A., Bikson, M., & Parra, L. C. (2010) · The Journal of Neuroscience · doi:10.1523/jneurosci.2059-10.2010 · Cited by 573
Ultrasonic neuromodulation by brain stimulation with transcranial ultrasound
Tufail, Y., Yoshihiro, A., Pati, S., Li, M. M., & Tyler, W. J. (2011) · Nature Protocols · doi:10.1038/nprot.2011.371 · Cited by 473
Metadata
- Authors
- Liebetanz, D., Klinker, F., Hering, D., Koch, R., Nitsche, M. A., Potschka, H., Löscher, W., Paulus, W., & Tergau, F.
- Venue
- Epilepsia
- Publisher
- Wiley
- Published
- 2006-07
- Volume
- 47
- Issue
- 7
- Pages
- 1216-1224
- ISSN
- 0013-9580 (ISSN-L)
- 1528-1167
- OpenAlex
- W2107603750
- Cited by
- 224
- References
- 2
- FWCI
- 3.76
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Liebetanz, D., Klinker, F., Hering, D., Koch, R., Nitsche, M. A., Potschka, H., Löscher, W., Paulus, W., & Tergau, F. (2006). Anticonvulsant Effects of Transcranial Direct‐current Stimulation (tDCS) in the Rat Cortical Ramp Model of Focal Epilepsy. Epilepsia. https://doi.org/10.1111/j.1528-1167.2006.00539.x
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