"Brain Computer Interface : A Unified Exploration from Analog Front-end to Signal Processing"
présenté par le Dr. Roozbeh Jafari, University of Texas at Dallas.
vendredi 30 novembre de 15h00 à 16h30 en salle A008.
Brain computer interface (BCI) systems provide communication channels to translate brain rhythms into signals suitable for operating external devices. Applications of BCI are diverse spanning entertainment and gaming to clinical rehabilitation and diagnosis. BCI has gained popularity in recent years thanks to technological advances in dry-contact electrode design, miniaturization of electronic circuitry and introduction of less expensive devices for electroencephalography (EEG).
Wearability and ease-of-use are two important considerations for successful deployment of commercial systems in this domain. This talk introduces several design principles that will facilitate the creation of next generation wearable and plug-and-play BCI systems.
We present the basic principles of EEG, and provide an overview on the literature of BCI. We take a top-down approach highlighting several applications including motor imagery, object recognition, slow cortical potentials and steady state evoked potentials. We discuss the analog front-end of the EEG and several techniques aimed at creating robust self-calibrating plug-and-play electrodes. We will extensively cover signal processing techniques and will present our findings on simulation of our in-house developed BCI benchmarks. Low power BCI design directly translates to enhanced wearability, form factor reduction and smaller batteries. Our findings highlight the architectural requirements of the next generation low power BCI systems.
Roozbeh Jafari is a faculty member at UT-Dallas. He received his PhD in Computer Science (UCLA) and completed a postdoctoral fellowship at UC-Berkeley. His research interest lies in the area of wearable computer design and signal processing. His research has been funded by the NSF, NIH, DoD (TATRC), AFRL, AFOSR, DARPA, SRC and industry (Texas Instruments, Tektronix, Samsung & Telecom Italia). He is the recipient of the NSF CAREER award (2012) and the RTAS 2011 best paper award.
He has published over 100 papers in refereed journals and conferences. He has served as TPC chairs for several flagship conferences in the area of Wireless Health and Wearable Computers including the ACM Wireless Health 2012, International Conference on Body Sensor Networks 2011 and International Conference on Body Area Networks 2011. He and Carl Sechen are investigators on a newly awarded SRC/DARPA center called TerraSwarm led by Edward Lee at Berkeley.
contact : Anis Laouiti