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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:13.0pt;color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal>-------- Original Message -------- <o:p></o:p></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0><tr><td nowrap valign=top style='padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><b>Subject: <o:p></o:p></b></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal>Seminar by Dr. Shawn O’Connor on “How limb dynamics and gait energetics influence the neural control of locomotion” on Monday March4, 2013<o:p></o:p></p></td></tr><tr><td nowrap valign=top style='padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><b>Date: <o:p></o:p></b></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal>Sun, 03 Mar 2013 22:34:23 -0800<o:p></o:p></p></td></tr><tr><td nowrap valign=top style='padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><b>From: <o:p></o:p></b></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal>Kee Moon <a href="mailto:kmoon@mail.sdsu.edu"><kmoon@mail.sdsu.edu></a><o:p></o:p></p></td></tr><tr><td nowrap valign=top style='padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><b>To: <o:p></o:p></b></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal><a href="mailto:faculty@engineering.sdsu.edu">faculty@engineering.sdsu.edu</a><o:p></o:p></p></td></tr></table><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><pre>Dear Colleagues,<o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>The ERC faculty search committee would like to inform you a seminar by <o:p></o:p></pre><pre>Dr. O’Connor on “How limb dynamics and gait energetics influence the <o:p></o:p></pre><pre>neural control of locomotion ” on Monday, March4, 2013. We would be <o:p></o:p></pre><pre>highly honored if you can spare some time from your busy schedule to <o:p></o:p></pre><pre>attend the seminar. We would like to invite all you students to attend <o:p></o:p></pre><pre>the seminar as well. For your information, the faculty candidate’s <o:p></o:p></pre><pre>resume is attached. Further, we would appreciate it if you can join the <o:p></o:p></pre><pre>following meetings with the faculty candidate:<o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>12:00pm Lunch in Faculty Club, ECE/ME faculty<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>2:30-3:00pm Group meeting with ME/ECE faculty, ME <o:p></o:p></pre><pre>Conference room<o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>Thanks and regards,<o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>Kee<o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>Faculty Candidate Seminar<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Speaker Name:<o:p></o:p></pre><pre>Dr. Shawn O’Connor<o:p></o:p></pre><pre>Date: Monday, March 4, 2013 - 11:00am<o:p></o:p></pre><pre>Location: COE Dean’s Conference room<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Title: How limb dynamics and gait energetics influence the neural <o:p></o:p></pre><pre>control of locomotion<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Abstract: Movement is created by the complex interaction between body <o:p></o:p></pre><pre>dynamics and neural control; however, current technology used to augment <o:p></o:p></pre><pre>or assist walking does not take this closed-loop relationship into <o:p></o:p></pre><pre>account. I will present studies that investigate how limb dynamics and <o:p></o:p></pre><pre>gait energetics influence control strategies used by the nervous system. <o:p></o:p></pre><pre>Central to these studies are the use of mechanical models of locomotion <o:p></o:p></pre><pre>and control theory to generate testable hypotheses that are verified <o:p></o:p></pre><pre>with human experiments. I will first demonstrate that key features of <o:p></o:p></pre><pre>human gait may be reproduced even in a simple bipedal mechanics model <o:p></o:p></pre><pre>when compliance and arc feet are added to the legs. This model generates <o:p></o:p></pre><pre>a variety of walking and running gaits by varying only two stiffness <o:p></o:p></pre><pre>parameters and informs the design of compliant prosthetic and assistive <o:p></o:p></pre><pre>devices. I will then discuss how three-dimensional walking models <o:p></o:p></pre><pre>indicate that fore-aft walking dynamics may be self-stabilizing, whereas <o:p></o:p></pre><pre>lateral motion is unstable and requires active neural control. To test <o:p></o:p></pre><pre>this hypothesis, I developed a virtual reality environment for <o:p></o:p></pre><pre>perturbing visual feedback and found that humans rely less on <o:p></o:p></pre><pre>integrative visual information for fore-aft balance than mediolateral <o:p></o:p></pre><pre>balance. I am currently investigating how energetic cost is integrated <o:p></o:p></pre><pre>into the selection of optimal gait patterns in order to study how humans <o:p></o:p></pre><pre>will adapt when coupled to energy changing mechanisms, such as assistive <o:p></o:p></pre><pre>devices. To meet this aim, I have devised a treadmill-based environment <o:p></o:p></pre><pre>for perturbing possible sensory sources used to predict and perceive <o:p></o:p></pre><pre>metabolic effort, including the rate of visual flow and blood gas <o:p></o:p></pre><pre>concentrations of oxygen and carbon dioxide. The presented studies will <o:p></o:p></pre><pre>lay the groundwork for the development of natural and intuitive <o:p></o:p></pre><pre>rehabilitation devices that work with the dynamics and energetics of the <o:p></o:p></pre><pre>body to improve recovery after neurological injury.<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Biosketch: Shawn O’Connor is a postdoctoral fellow in the department of <o:p></o:p></pre><pre>Biomedical Physiology & Kinesiology at Simon Fraser University in <o:p></o:p></pre><pre>Vancouver, British Columbia. He obtained his Ph.D. in Biomedical <o:p></o:p></pre><pre>Engineering from the University of Michigan and a B.S. in Mechanical <o:p></o:p></pre><pre>Engineering from the Georgia Institute of Technology. The overarching <o:p></o:p></pre><pre>goals of his research are to discover clinically relevant principles <o:p></o:p></pre><pre>underlying locomotion and apply this knowledge to the development of <o:p></o:p></pre><pre>rehabilitation technology for improving mobility and recovery after <o:p></o:p></pre><pre>neurological injury.<o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div><br />--
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