March 2019 UWIN Seminar Speakers

The March 2019 UWIN seminar series continues in March with an exciting pair of short talks by Wu-Jung Lee and Eric Rombokas.

The seminar is on Wednesday, March 13, 2019 at 3:30 in Husky Union Building (HUB) 337. Refreshments will be served prior to the talks.

  • “Dissecting the closed-loop feedback in animal echolocation”
    Wu-Jung Lee, Research Associate, Applied Physics Lab, University of Washington
  • “Sensory Substitution, Multisensory Conflict, and Body Ownership: Stepping, Seeing, Sensing, Stabbing!”
    Eric Rombokas , Research Scientist, VA Center for Limb Loss and Mobility; Affiliate Assistant Professor, Mechanical Engineering, University of Washington
  • Abstracts:

    “Dissecting the closed-loop feedback in animal echolocation” (Wu-Jung Lee):

    The biosonar systems of echo-locating bats and dolphins possess accuracy and efficiency unmatched by human-made sonars. Echolocation is an adaptive process that involves transmitting probing signals and analyzing returning echoes to make decisions about the next set of behaviors. Yet, only until recently have elements of this closed-loop feedback process been considered in a holistic manner in experimental and theoretical studies. In this talk I will discuss the significance of each element of the echolocation feedback and my ongoing work in modeling echolocation-based target search behavior using the infotaxis principle originally developed for odor source localization.

    “Sensory Substitution, Multisensory Conflict, and Body Ownership: Stepping, Seeing, Sensing, Stabbing!” (Eric Rombokas):

    I will describe three topics we’re working on, providing humans novel sensory stimuli using noninvasive devices. The first is a vibrotactile sensory feedback array that allows people to better estimate their foot (ski boot or prosthetic lower limb) placement on stairs. This will include some early results we’ve observed about sensory capabilities after lower-limb Targeted Reinnervation sugery. The second is a series of visuo-tactile integration experiments in which we experimentally induce spatial conflict in the cues, a sort of “visuotactile 2-point discrimination test.” Finally I’ll describe a body ownership illusion over a virtual reality body during an exciting “stabbing knife game.” We’re exploring the behavioral consequences, as opposed to subjective responses or physiological signals, to feeling these illusions.