Steve Helms Tillery is a neuroscientist at Arizona State University who is particularly interested in how the brain learns to use sensory information in the control of skilled motor tasks. As an undergraduate, Helms Tillery studied psychology at ASU while on a music scholarship. He then moved to the University of Minnesota to study neuroscience under John Soechting and Tim Ebner, where he examined sensory processes underlying kinesthesia of the arm. He followed this with a postdoctoral fellowship at SUNY Health Science Center in Syracuse under Peter Strick, working on cognitive processing in basal ganglia and cerebellum. Eventually he returned to ASU to study neuroprosthetics with Andrew Schwartz. He has remained as a faculty member at ASU, where he uses neuroprosthetics to examine how the brain uses sensory information to control movement. In his efforts, he participates in studies using both human subjects and in nonhuman primates. As part of his appointment as a Lincoln Professor of Neural Engineering Research and Ethics, Helms Tillery also leads conversations to help determine how research resources can be marshaled to best provide lasting value to society.
Education
B.S. Psychology (Cum Laude with Honors), Arizona State University 1987
Overstreet CK, RB Hellman, RD Ponce Wong, VJ Santos, SI Helms Tillery (2016) Discriminability of Single and Multichannel Intracortical Microstimulation within Somatosensory Cortex (2016) Frontiers in Bioengineering and Biotechnology, 4: 91. doi: 10.3389/fbioe.2016.00091
Armenta Salas M, SI Helms TIllery (2016) Uniform and non-uniform perturbations in brain-machine interface task elicit similar neural strategies. (2016) Frontiers in Systems Neuroscience August 23. http://dx.doi.org/10.3389/fnsys2016.00070
Wahnoun R, M Benson, SI Helms Tillery, PD Adelson (2015) Delineation of somatosensory finger areas using vibrotactile stimulation, and ECoG study. Brain and Behavior, 5(10): doi: 10.1002/brb3.369
Hellman RB, E Chang, J Tanner, SI Helms Tillery, VJ Santos (2015) A robot hand testbed designed for enhancing embodiment and functional neurorehabilitation of body schema in subjects with upper limb impairment or loss. Frontiers in Human Neuroscience, 9:26. doi: 10.3389/fnhum.2015.00026.
Overstreet CK, JD Klein, SI Helms Tillery (2013) Computational modeling of direct neuronal recruitment during intracortical microstimulation in somatosensory cortex. Journal of Neural Engineering. 10(6): 066016
Rincon-Gonzalez L, SN Naufel, VJ Santos, SI Helms Tillery (2012) Interactions between tactile and proprioceptive representations in haptics. Journal of Motor Behavior, 44(6): 391-401. http://dx.doi.org/10.1080/00222895.2012.746281
McAndrew, RM, JL Lingo-VanGilder, SN Naufel , SI Helms Tillery. (2012) Individualized recording chambers for non-human primate neurophysiology. Journal of Neuroscience Methods, 207(1): 86-90. doi:10.1016/j.jneumeth.2012.03.014
Rincon-Gonzalez L, CA Buneo, SI Helms Tillery. (2011) The proprioceptive map of arm position is systematic and stable, but idiosyncratic. PLoS ONE, 6(11): e25214. doi:10.1371/journal.pone.0025214
Rincon-Gonzalez L, JP Warren, DM Meller, SI Helms TIllery. (2011) Haptic interaction of touch and proprioception: implications for neuroprosthetics. IEEE Trans Neural Sys Rehab Eng., 19(5): 490-500.
Warren JP, SI Helms Tillery. (2011) Tactile perception: do distinct subpopulations explain differences in mislocalization rates of stimuli across fingertips? Neuroscience Letters 505(1): 1-5. doi:10.1016/j.neulet.2011.04.057
Warren JP, M Santello, SI Helms Tillery. (2011) Effects of fusion between tactile and proprioceptive input on a tactile illusion. PLoS ONE, 6(3): e18073. doi:10.1371/journal.pone.0018073
Warren JP, M Santello, SI Helms Tillery. (2010) Electrotactile stimuli delivered across fingertips inducing the cutaneous rabbit effect. Experimental Brain Research, 206(4): 419-426
Tufail, Y, A Matyushov, N Baldwin1, ML Tauchmann, J Georges, A Yoshihiro1, SI Helms Tillery, WJ Tyler ☨. (2010) Transcranial pulsed ultrasound stimulates intact brain circuits. Neuron, 66(5): 681-694 DOI: 10.106/j.neuron.2010.05.008
Warren J, LM Bobich, JD Sweeney, M Santello,, SI Helms Tillery (2008) Receptive field characteristics under electrotactile stimulation of the fingertip. IEEE Transactions on Neural Systems and Rehabilitation Engineering. 16(4): 410-415
Stukel JM, JP Parks, MR Caplan, SI Helms Tillery (2008) Temporal and spatial control of neural effects following intracerebral microinfusion. J Drug Targeting, 16(3): 198-205.
Bobich LR, J Warren1, SI Helms Tillery, JD Sweeney, M Santello. (2007) Spatial localization of electrotactile stimuli on the fingertip in humans. Somatosensory & Motor Research, 24(4): 179-188.
Wahnoun R, J He, SI Helms Tillery. (2006) Selection and parameterization of cortical neurons for neuroprosthetic control. Journal of Neural Engineering, 3: 162-171
Helms Tillery, Stephen, Fan, J, Helms Tillery, S. Motor cortical encoding of planned hand orientation in a 3-d reach-to-grasp task. (2006).
Wahnoun, R, Helms Tillery, Stephen, He, J. Cortical motor units' behavior under two alternating tasks in a virtual reality environment. (2006).
Warren, J, Raleigh, L, Helms Tillery, Stephen, Santello, M, Sweeney, J. Effect of electrotactile stimulus parameters on tactile sensastion and spatial discrimination. (2006).
J Fan, J He, Stephen Helms Tillery. Control of hand orientation and arm movement during reach and grasp. Experimental Brain Research (2005).
T Kang, J He, Stephen Helms Tillery. Determining natural arm configuration along a reaching trajectory. Experimental Brain Research (2005).
Kiggins, J, Ingalls, T, James, J, Santello, M, Helms Tillery, Stephen. Bow-arm kinematics in trained and untrained violin playing. (2005).
Raleigh, L, Warren, J, Helms Tillery, Stephen, Santello, M, Sweeney, J. Comparison of discriminability in electrotactile and mechanical stimulation of the fingertip. (2005).
Stephen Helms Tillery, D Taylor. Signal acquisition and analysis for cortical control of neuroprosthetics. Current Opinion in Neurobiology (2004).
Middleton, F A, Helms Tillery, Stephen I. The cerebellum. Encyclopedia of Cognitive Science (2003).
D Taylor, Stephen Helms Tillery, A Schwartz. Information conveyed through brain-control: cursor vs. robot. IEEE Transactions on Neural Systems and Rehabilitation Engineering (2003).
Stephen Helms Tillery, D Taylor, A Schwartz. Training in cortical control of neuroprosthetic devices improves signal extraction from small neuronal ensembles. Reviews in the Neurosciences (2003).
Fan, J, Helms Tillery, Stephen, He, J. Hand orientation and perturbation effects during reach and grasp. (2003).
Helms Tillery, Stephen, Parks, J. Identified functional connectivity between cortical neurons and elements of basal ganglia. (2003).
Helms Tillery, Stephen, Taylor, D, Schwartz, A. The general utility of a neuroprosthetic device under direct cortical control. (2003).
Lin, W, Helms Tillery, Stephen, He, J. Stability of chronic multichannel neural recordings. (2003).
Tao, K, Helms Tillery, Stephen, He, J. Determining natural arm configuration along reaching trajectory. (2003).
Taylor, D, Helms Tillery, Stephen, Schwartz, A. Information transfer rates in brain-machine interfaces. (2003).
Wahnoun, R, Helms Tillery, Stephen, He, J. Asessing the ammount of cortical learning in neural control of prosthetics. (2003).
D Taylor, Stephen Helms Tillery, A Schwartz. Direct cortical control of 3d neuroprosthetic devices. Science (2002).
Research Activity
Helms Tillery Stephen I*, Tyler, WJ, Buneo, CA, Kodibagkar, VA, Sadleir, R, Robert, Jason. Transdermal Electrical Neuromodulation for Performance Optimization. DARPA Targeted Neuroplasticity Training N66001-17-2-4018.
Santello,Marco*, Frakes,David, Frakes,David, Greger,Bradley, Helms Tillery,Stephen I, Honeycutt,Claire, Kleim,Jeffrey Allan, Lockhart,Thurmon Eddy. Planning Grant: Collaborative Research: IUCRC for Building Reliable Advances and Innovation in Neurotechnology (BRAIN). NSF(9/15/2015 - 8/31/2016).
Helms Tillery,Stephen I*. Dexterous Hand Control Through Fascicular Targeting (DEFT). NI(4/1/2015 - 7/25/2016).
Buneo,Christopher Alan*, Artemiadis,Panagiotis K., Helms Tillery,Stephen I. Neural Correlates of Cooperative Manipulative Actions. AZ DEPT OF HEALTH SERVICES(10/23/2014 - 10/22/2015).
Helms Tillery,Stephen I*. A Practical Brain-Computer Interface Based on Micro-ECoG Technology. PHX. CHILDREN'S HOSP(7/1/2011 - 6/30/2013).
Helms Tillery,Stephen I*. A Practical Brain-Computer Interface Based on Micro-ECoG Technology. PHX. CHILDREN'S HOSP(7/1/2010 - 6/30/2013).
Santos,Veronica Jade*, Helms Tillery,Stephen I. CPS:Small:Cyber-physical system challenges in man-machine interfaces: context-dependent control of smart artificial hands through enhanced touch pe. NSF-CISE(9/15/2009 - 8/31/2013).
Helms Tillery,Stephen I*, Helms Tillery,Stephen I*. SUP: The adaptability of cortex in learning modified control algorithms for neuroprosthetics. HHS-NIH-NINDS(9/1/2009 - 8/31/2011).
Helms Tillery,Stephen I*. The adaptability of cortex in learning modified control algorithms for neuroprosthetics. HHS-NIH-NINDS(7/1/2008 - 3/31/2013).
Helms Tillery,Stephen I*, Santello,Marco, Santello,Marco. Cortical Control of a Dextros Prosthetic Hand. UNIV OF PITTSBURGH(9/18/2006 - 11/30/2011).
He,Jiping*, Helms Tillery,Stephen I. Teaming Plan for Revolutionizing Prosthetics. UNIV OF SOUTHERN CA(3/31/2006 - 11/2/2007).
He,Jiping*, Helms Tillery,Stephen I. Development of High Density Neural Recordings for Deep Brain Stimulation Mapping Studies. MAYO CLINIC SCOTTSDALE(1/1/2005 - 12/31/2006).
Helms Tillery,Stephen I*. CORTICAL CONTROL OF NEURAL PROSTHESES. UNIV OF PITTSBURGH(2/1/2003 - 5/31/2003).
Helms Tillery, Stephen. Neuroprosthetics at Arizona State University. Class lecture for Tecnologico de Monterrey, Monterrey, MX (Sep 2005).
Helms Tillery, Stephen. Music and the brain. Adults' Night Out, Arizona Science Center (Jun 2005).
Helms Tillery, Stephen. The basal ganglia contribution to. Motor Doings, University of Arizona School of Medicine (Mar 2004).
Helms Tillery, Stephen. Your brain on music. Art Ventures in Engineering (Mar 2004).
Helms Tillery, Stephen, He, J. Cortically controlled neuroprosthetics at ASU. President's Community Enrichment Programs, Journey of the Mind (Mar 2004).
Helms Tillery, Stephen. Correlated activity between nuclei of the basal ganglia. Harrington Dept. Lecture Series (Oct 2003).
Helms Tillery, Stephen. Physiological evidence for closed- and segregated-loops in basal ganglia. Neuroscience Seminar Series, Barrow Neurological Institute