Brisbane, Queensland, Australia
  •  8
    A Minimally Invasive 64-Channel Wireless μeCoG Implant
    with H. P. Le, W. Li, P. Ledochowitsch, S. Gambini, T. Bjorninen, A. Koralek, J. M. Carmena, M. M. Maharbiz, E. Alon, and J. M. Rabaey
    © 1966-2012 IEEE.Emerging applications in brain-machine interface systems require high-resolution, chronic multisite cortical recordings, which cannot be obtained with existing technologies due to high power consumption, high invasiveness, or inability to transmit data wirelessly. In this paper, we describe a microsystem based on electrocorticography that overcomes these difficulties, enabling chronic recording and wireless transmission of neural signals from the surface of the cerebral cortex. …Read more
  •  3
    Equalization for intracortical microstimulation artifact reduction
    with P. Chu, A. Koralek, J. M. Carmena, J. M. Rabaey, and S. Gambini
    We present a method for decreasing the duration of artifacts present during intra-cortical microstimulation 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 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%. Cons…Read more