Equalization for intracortical microstimulation artifact reduction
- Author(s): Chu, P
- Muller, R
- Koralek, A
- Carmena, JM
- Rabaey, JM
- Gambini, S
- et al.
Published Web Locationhttps://doi.org/10.1109/EMBC.2013.6609483
We present a method for decreasing the duration of artifacts present during intra-cortical microstimulation (ICMS) recordings by using techniques developed for digital communications. We replace the traditional monophasic or biphasic current stimulation pulse with a patterned pulse stream produced by a Zero Forcing Equalizer (ZFE) filter after characterizing the artifact as a communications channel. The results find that using the ZFE stimulus has the potential to reduce artifact width by more than 70%. Considerations for the hardware implementation of the equalizer are presented. © 2013 IEEE.
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