@proceedings {111,
	title = {Compact and low-cost tendon vibrator for inducing proprioceptive illusions},
	year = {2009},
	month = {03/2009},
	publisher = {IEEE},
	address = {Salt Lake City, Utah},
	abstract = {<p>Recent literature suggests that inducing proprioceptive movement illusions with predefined movement trajectories via tendon vibration requires use of multiple vibrators and precisely controlled frequency profiles. In this study, we report the design, modeling and control of a compact, low-cost tendon vibrator and illustrate its capability of accurately following time-varying frequency profiles. During the demonstration, participants will test the vibrator to experience illusory elbow flexion.</p>},
	keywords = {artificial proprioception, proprioceptive illusions, tendon vibration},
	attachments = {https://mahilab.rice.edu/sites/default/files/publications/111-Celik2009WHC.pdf},
	author = {Ozkan Celik and O{\textquoteright}Malley, M.K. and Brent Gillespie and Shewokis, Patricia A. and Contreras-Vidal, Jose Luis}
}
@proceedings {celik_comparison,
	title = {Comparison of robotic and clinical motor function improvement measures for sub-acute stroke patients},
	year = {2008},
	pages = {2477{\textendash}2482},
	address = {Pasadena, CA},
	abstract = {<p>In this paper, preliminary results in motor function improvement for four sub-acute stroke patients that underwent a hybrid robotic and traditional rehabilitation program are presented. The therapy program was scheduled for three days a week, four hours per day (approximately 60\% traditional constraint induced therapy activities and 40\% robotic therapy). A haptic joystick was used to implement four different operating modes for robotic therapy: unassisted (U), constrained (C), assisted (A), and resisted (R) modes. A target hitting task involving the positioning of a pointer on twelve targets was completed by the patients. Two different robotic measures were utilized to quantify the motor function improvement through the sessions: trajectory error (TE) and smoothness of movement (SM). Fugl-Meyer (FM) and motor activity log (MAL) scales were used as clinical measures. Analysis of results showed that the group demonstrates a significant motor function improvement with respect to both clinical and robotic measures. Regression analyses were carried out on corresponding clinical and robotic measure result pairs. A significant relation between FM scale and robotic measures was found for both of the analyzed modes. Regression of robotic measures on MAL scores resulted in no significance. A regression analysis that compared the two clinical measures revealed a very low agreement. Our findings suggest that it might be possible to obtain objective robotic measures that are significantly correlated to widely-used and reliable clinical measures in considerably different operating modes and control schemes.</p>},
	keywords = {robotic rehabilitation},
	attachments = {https://mahilab.rice.edu/sites/default/files/publications/74-CelikICRA2008.pdf},
	author = {Ozkan Celik and O{\textquoteright}Malley, M.K. and Boake, Corwin and H.S. Levin and Fischer, Steven and Reistetter, Timothy}
}
