. Author manuscript; available in PMC: 2011 Aug 1.

Published in final edited form as: Clin Neurophysiol. 2010 Apr 1;121(8):1227–1232. doi: 10.1016/j.clinph.2010.02.156

Table 2.

Ratio of artifact-free signal variance to contaminated signal variance before and after application of the Hampel filter for both synthesized and actual DBS artifact data.

	Synthesized Artifact		Actual Artifact

Subject	Pre-filter (dB)	Post-filter (dB)	Pre-filter (dB)	Post-filter (dB)

1	−14.87	−0.00	−15.43	0.30
2	−10.48	−0.01	−11.47	0.35
3	−3.09	0.01	−4.33	0.39
4	−10.56	0.01	−10.91	−0.12