Elimination of electrocardiogram contamination from vagus nerve recordings using ICA
(2009) 14th Annual International FES Society Conference (IFESS 2009) — Location: Seoul (Corea) (13.September.2009)
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- Abstract
- Vagus nerve stimulation has become a recognized form of treatment for several conditions such as refractory epilepsy and depression. Vagus nerve signals have recently been recorded in rats in order to gain a better understanding of its exact mechanism of interference with these pathologies. For this purpose, nerve cuff electrodes offer many advantages but suffer from a low signal to noise ratio. In particular, cardiac artefacts represent a major burden to the subsequent extraction of information from the nerve signal. In this work, we show that these cardiac artefacts can be efficiently separated from the neural activity in multi-channel recordings by the ICA algorithm. The discarded source is highly correlated with a short time-delayed version of the ECG signal, which suggests that the artifact mainly results from volume conducted heart electrical activity.
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Citations
de Lannoy, G., Costecalde, T., Marin, J., Verleysen, M., & Delbeke, J. (2009). Elimination of electrocardiogram contamination from vagus nerve recordings using ICA. Proceedings of the 14th Annual International FES Society Conference (IFESS 2009), p. 109-111. https://hdl.handle.net/2078.5/253925