Technical note
Artifact reduction in magnetic stimulation,☆☆

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Abstract

A new biopontial amplifier is described in which the stimulus artifact from recordings of electrically or magnetically evoked biopotentials is minimized by a special active filter. The amplifier is tested in different experiments and the recordings are compared to standard EMG recordings.

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Presented in part at the Symposium on Magnetic Brain Stimulation 1991 in Aachen, FRG.

☆☆

This work was supported by the German Research Council (DFG - Deutsche Forschungsgemeinschaft) SFB No. 220, D5 (C.J., A.S.) and DFG Lo 217-21-3 (T.W.) as well as the Alexander v. Humboldt Foundation (J.M.) and the Hans Neuenschwander Foundation, Switzerland (J.M.).

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