AUTHOR=Stanslaski Scott R. , Case Michelle A. , Giftakis Jonathon E. , Raike Robert S. , Stypulkowski Paul H. TITLE=Long Term Performance of a Bi-Directional Neural Interface for Deep Brain Stimulation and Recording JOURNAL=Frontiers in Human Neuroscience VOLUME=Volume 16 - 2022 YEAR=2022 URL=https://www.frontiersin.org/journals/human-neuroscience/articles/10.3389/fnhum.2022.916627 DOI=10.3389/fnhum.2022.916627 ISSN=1662-5161 ABSTRACT=In prior reports we described the design and initial performance of a fully implantable, bi-directional neural interface system for use in deep brain and other neurostimulation applications. Here we provide an update on the chronic, long-term neural sensing performance of the system using traditional 4-contact leads and extend those results to include directional 8-contact leads.