CaltechAUTHORS
  A Caltech Library Service

A Prototype of a Fully-Implantable Charge-Balanced Artificial Sensory Stimulator for Bi-directional Brain-Computer-Interface (BD-BCI)

Sohn, Won J. and Wang, Po T. and Kellis, Spencer and Andersen, Richard A. and Liu, Charles Y. and Heydari, Payam and Nenadic, Zoran and Do, An H. (2020) A Prototype of a Fully-Implantable Charge-Balanced Artificial Sensory Stimulator for Bi-directional Brain-Computer-Interface (BD-BCI). In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). IEEE , Piscataway, NJ, pp. 3082-3085. ISBN 9781728119908. https://resolver.caltech.edu/CaltechAUTHORS:20200914-141012984

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20200914-141012984

Abstract

Bi-directional brain-computer interfaces (BD-BCI) to restore movement and sensation must achieve concurrent operation of recording and decoding of motor commands from the brain and stimulating the brain with somatosensory feedback. Previously we developed and validated a benchtop prototype of a fully implantable BCI system for motor decoding. Here, a prototype artificial sensory stimulator was integrated into the benchtop system to develop a prototype of a fully-implantable BD-BCI. The artificial sensory stimulator incorporates an active charge balancing mechanism based on pulse-width modulation to ensure safe stimulation for chronically interfaced electrodes to prevent damage to brain tissue and electrodes. The feasibility of the BD-BCI system’s active charge balancing was tested in phantom brain tissue. With the charge-balancing, the removal of the residual charges on an electrode was evident. This is a critical milestone toward fully-implantable BD-BCI systems.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/embc44109.2020.9176718DOIArticle
ORCID:
AuthorORCID
Kellis, Spencer0000-0002-5158-1058
Andersen, Richard A.0000-0002-7947-0472
Additional Information:© 2020 IEEE. This study was supported by NSF grant #1646275.
Funders:
Funding AgencyGrant Number
NSFCNS-1646275
Record Number:CaltechAUTHORS:20200914-141012984
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200914-141012984
Official Citation:W. J. Sohn et al., "A Prototype of a Fully-Implantable Charge-Balanced Artificial Sensory Stimulator for Bi-directional Brain-Computer-Interface (BD-BCI)," 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), Montreal, QC, Canada, 2020, pp. 3082-3085, doi: 10.1109/EMBC44109.2020.9176718
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105382
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:14 Sep 2020 21:37
Last Modified:14 Sep 2020 21:37

Repository Staff Only: item control page