Related Experiment Video
Updated: Aug 7, 2026
The Miniature Pig: A Large Animal Model for Cochlear Implant Research
Published on: July 28, 2022
Minimization of cochlear implant stimulus artifact in cortical auditory evoked potentials
Phillip M Gilley1, Anu Sharma, Michael Dorman
1School of Behavioral and Brain Sciences, Callier Advanced Hearing Research Center, The University of Texas at Dallas, 1966 Inwood Road, 75235, USA. pgilley@utdallas.edu
Objective:
To compare two methods of minimizing cochlear implant artifact in cortical auditory evoked potential (CAEP) recordings.
Methods:
Two experiments were conducted. In the first, we assessed the use of independent component analysis (ICA) as a pre-processing filter. In the second, we explored the use of an optimized differential reference (ODR) for minimizing artifacts.
Results:
Both ICA and the ODR can minimize the artifact and allow measurement of CAEP responses.
Conclusions:
When using a large number of recording electrodes ICA can be used to minimize the implant artifact. When using a single electrode montage an optimized differential reference is adequate to minimize the artifact.
Significance:
The use of an optimized differential reference could allow cortical evoked potentials to be used in routine clinical assessment of auditory pathway development in children and adults fit with cochlear implants.
