Shadmehr, Reza

Professor
Som Biomedical EngineeringBME Profile

Traylor 410
(410) 614-2458
shadmehr@jhu.edu

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About

Education
  • Ph.D. 1991, Univ Southern California
  • Master of Science 1987, Univ Southern California
  • Bachelor of Science 1985, Gonzaga University
Experience
  • 2017 - Present:  ADJUNCT PROFESSOR (NE), SOM Neurology
  • 2013 - 2017:  JOINT/SECONDARY FACULTY, SOM Neuroscience
  • 2004 - Present:  Professor, SOM Neuroscience
  • 2000 - 2004:  Associate Professor, SOM Neuroscience
  • 1999 - 2000:  Assistant Professor, SOM Neuroscience

Publications

Journal Articles
  • Herzfeld DJ, Kojima Y, Soetedjo R, Shadmehr R (2018).  Encoding of error and learning to correct that error by the Purkinje cells of the cerebellum.  Nature Neuroscience.  (5).
  • Albert ST, Shadmehr R (2018).  Estimating properties of the fast and slow adaptive processes during sensorimotor adaptation.  Journal of Neurophysiology.  119(4).
  • Shadmehr R (2017).  Distinct neural circuits for control of movement vs. Holding still.  Journal of Neurophysiology.  117(4).
  • Shadmehr R (2017).  Learning to predict and control the physics of our movements.  Journal of Neuroscience.  37(7).
  • Albert ST, Shadmehr R (2016).  The neural feedback response to error as a teaching signal for the motor learning system.  Journal of Neuroscience.  36(17).
  • Shadmehr R, Huang HJ, Ahmed AA (2016).  A Representation of Effort in Decision-Making and Motor Control.  Current Biology.  (14).
  • Rigas I, Komogortsev O, Shadmehr R (2016).  Biometric recognition via eye movements: Saccadic vigor and acceleration cues.  ACM Transactions on Applied Perception.  13(2).
  • Herzfeld DJ, Kojima Y, Soetedjo R, Shadmehr R (2015).  Encoding of action by the Purkinje cells of the cerebellum.  Nature.  526(7573).
  • Hanajima R, Shadmehr R, Ohminami S, Tsutsumi R, Shirota Y, Shimizu T, Tanaka N, Terao Y, Tsuji S, Ugawa Y, Uchimura M, Inoue M, Kitazawa S (2015).  Modulation of error-sensitivity during a prism adaptation task in people with cerebellar degeneration.  Journal of Neurophysiology.  114(4).
  • Marko MK, Crocetti D, Hulst T, Donchin O, Shadmehr R, Mostofsky SH (2015).  Behavioural and neural basis of anomalous motor learning in children with autism.  Brain.  138(3).
  • Reppert TR, Lempert KM, Glimcher PW, Shadmehr R (2015).  Modulation of saccade vigor during value–based decision making.  Journal of Neuroscience.  35(46).
  • Salimpour Y, Mari ZK, Shadmehr R (2015).  Altering effort costs in Parkinson’s disease with noninvasive cortical stimulation.  Journal of Neuroscience.  35(35).
  • Pekny SE, Izawa J, Shadmehr R (2015).  Reward-dependent modulation of movement variability.  Journal of Neuroscience.  35(9).
  • Pekny SE, Shadmehr R (2015).  Optimizing effort: Increased efficiency of motor memory with time away from practice.  Journal of Neurophysiology.  113(2).
  • Vaswani PA, Shmuelof L, Haith AM, Delnicki RJ, Huang VS, Mazzoni P, Shadmehr R, Krakauer JW (2015).  Persistent residual errors in motor adaptation tasks: Reversion to baseline and exploratory escape.  Journal of Neuroscience.  35(17).
  • Herzfeld DJ, Shadmehr R (2014).  Cerebellum estimates the sensory state of the body.  Trends in Cognitive Sciences.  18(2).
  • Herzfeld DJ, Shadmehr R (2014).  Motor variability is not noise, but grist for the learning mill.  Nature Neuroscience.  17(2).
  • Choi JES, Vaswani PA, Shadmehr R (2014).  Vigor of movements and the cost of time in decision making.  Journal of Neuroscience.  34(4).
  • Salimpour Y, Shadmehr R (2014).  Motor costs and the coordination of the two arms.  Journal of Neuroscience.  34(5).
  • Orban de Xivry JJ, Shadmehr R (2014).  Electrifying the motor engram: effects of tDCS on motor learning and control.  Experimental Brain Research.  232(11).
  • Herzfeld DJ, Vaswani PA, Marko MK, Shadmehr R (2014).  A memory of errors in sensorimotor learning..  Science (New York, N.Y.).  345(6202).
  • Herzfeld DJ, Pastor D, Haith AM, Rossetti Y, Shadmehr R, O'Shea J (2014).  Contributions of the cerebellum and the motor cortex to acquisition and retention of motor memories.  NeuroImage.  98.
  • Vaswani PA, Shadmehr R (2013).  Decay of motor memories in the absence of error.  Journal of Neuroscience.  33(18).
  • Orban de Xivry JJ, Ahmadi-Pajouh MA, Harran MD, Salimpour Y, Shadmehr R (2013).  Changes in corticospinal excitability during reach adaptation in force fields.  Journal of Neurophysiology.  109(1).
  • Reppert TR, Choi JES, Haith AM, Shadmehr R (2012).  Changes in saccade kinematics associated with the value and novelty of a stimulus.  2012 46th Annual Conference on Information Sciences and Systems, CISS 2012.
  • Marko MK, Haith AM, Harran MD, Shadmehr R (2012).  Sensitivity to prediction error in reach adaptation.  Journal of Neurophysiology.  108(6).
  • Haith AM, Reppert TR, Shadmehr R (2012).  Evidence for hyperbolic temporal discounting of reward in control of movements.  Journal of Neuroscience.  32(34).
  • Ahmadi-Pajouh MA, Towhidkhah F, Shadmehr R (2012).  Preparing to reach: Selecting an adaptive long-latency feedback controller.  Journal of Neuroscience.  32(28).
  • Izawa J, Pekny SE, Marko MK, Haswell CC, Shadmehr R, Mostofsky SH (2012).  Motor learning relies on integrated sensory inputs in ADHD, but over-selectively on proprioception in autism spectrum conditions.  Autism Research.  5(2).
  • Izawa J, Criscimagna-Hemminger SE, Shadmehr R (2012).  Cerebellar contributions to reach adaptation and learning sensory consequences of action.  Journal of Neuroscience.  32(12).
  • Pekny SE, Criscimagna-Hemminger SE, Shadmehr R (2011).  Protection and expression of human motor memories.  Journal of Neuroscience.  31(39).
  • Xu-Wilson M, Tian J, Shadmehr R, Zee DS (2011).  TMS perturbs saccade trajectories and unmasks an internal feedback controller for saccades.  Journal of Neuroscience.  31(32).
  • Orban De Xivry JJ, Criscimagna-Hemminger SE, Shadmehr R (2011).  Contributions of the motor cortex to adaptive control of reaching depend on the perturbation schedule.  Cerebral Cortex.  21(7).
  • de Xivry JJO, Marko MK, Pekny SE, Pastor D, Izawa J, Celnik P, Shadmehr R (2011).  Stimulation of the human motor cortex alters generalization patterns of motor learning.  Journal of Neuroscience.  31(19).
  • Izawa J, Shadmehr R (2011).  Learning from sensory and reward prediction errors during motor adaptation.  PLoS Computational Biology.  7(3).
  • Shadmehr R (2010).  Control of movements and temporal discounting of reward.  Current Opinion in Neurobiology.  20(6).
  • Keisler A, Shadmehr R (2010).  A shared resource between declarative memory and motor memory.  Journal of Neuroscience.  30(44).
  • Shadmehr R, Smith MA, Krakauer JW (2010).  Error correction, sensory prediction, and adaptation in motor control.  Annual Review of Neuroscience.  33.
  • Shadmehr R, De Xivry JJO, Xu-Wilson M, Shih TY (2010).  Temporal discounting of reward and the cost of time in motor control.  Journal of Neuroscience.  30(31).
  • Criscimagna-Hemminger SE, Bastian AJ, Shadmehr R (2010).  Size of error affects cerebellar contributions to motor learning.  Journal of Neurophysiology.  103(4).
  • Diedrichsen J, Shadmehr R, Ivry RB (2010).  The coordination of movement: optimal feedback control and beyond.  Trends in Cognitive Sciences.  14(1).
  • Rothwell JC, Shadmehr R, Yates B (2010).  Editorial: Neurophysiology and computational neuroscience.  Experimental Brain Research.  200(3-4).
  • Xu-Wilson M, Chen-Harris H, Zee DS, Shadmehr R (2009).  Cerebellar contributions to adaptive control of saccades in humans.  Journal of Neuroscience.  29(41).
  • Huang VS, Shadmehr R (2009).  Persistence of motor memories reflects statistics of the learning event.  Journal of Neurophysiology.  102(2).
  • Haswell CC, Izawa J, R Dowell L, H Mostofsky S, Shadmehr R (2009).  Representation of internal models of action in the autistic brain.  Nature Neuroscience.  12(8).
  • Xu-Wilson M, Zee DS, Shadmehr R (2009).  The intrinsic value of visual information affects saccade velocities.  Experimental Brain Research.  196(4).
  • Tian J, Ethier V, Shadmehr R, Fujita M, Zee DS (2009).  Some perspectives on saccade adaptation.  Annals of the New York Academy of Sciences.  1164.
  • Ethier V, Zee DS, Shadmehr R (2008).  Changes in control of saccades during gain adaptation.  Journal of Neuroscience.  28(51).
  • Gidley Larson JC, Bastian AJ, Donchin O, Shadmehr R, Mostofsky SH (2008).  Acquisition of internal models of motor tasks in children with autism.  Brain.  131(11).
  • Izawa J, Shadmehr R (2008).  On-line processing of uncertain information in visuomotor control.  Journal of Neuroscience.  28(44).
  • Criscimagna-Hemminger SE, Shadmehr R (2008).  Consolidation patterns of human motor memory.  Journal of Neuroscience.  28(39).
  • Kluzik J, Diedrichsen J, Shadmehr R, Bastian AJ (2008).  Reach adaptation: What determines whether we learn an internal model of the tool or adapt the model of our arm?.  Journal of Neurophysiology.  100(3).
  • Huang VS, Shadmehr R, Diedrichsen J (2008).  Active learning: Learning a motor skill without a coach.  Journal of Neurophysiology.  100(2).
  • Rowland LM, Shadmehr R, Kravitz D, Holcomb HH (2008).  Sequential neural changes during motor learning in schizophrenia.  Psychiatry Research - Neuroimaging.  163(1).
  • Ethier V, Zee DS, Shadmehr R (2008).  Spontaneous recovery of motor memory during saccade adaptation.  Journal of Neurophysiology.  99(5).
  • Chen-Harris H, Joiner WM, Ethier V, Zee DS, Shadmehr R (2008).  Adaptive control of saccades via internal feedback.  Journal of Neuroscience.  28(11).
  • Izawa J, Rane T, Donchin O, Shadmehr R (2008).  Motor adaptation as a process of reoptimization.  Journal of Neuroscience.  28(11).
  • Shadmehr R, Krakauer JW (2008).  A computational neuroanatomy for motor control.  Experimental Brain Research.  185(3).
  • Hadipour-Niktarash A, Lee CK, Desmond JE, Shadmehr R (2007).  Impairment of retention but not acquisition of a visuomotor skill through time-dependent disruption of primary motor cortex.  Journal of Neuroscience.  27(49).
  • Körding KP, Tenenbaum JB, Shadmehr R (2007).  Multiple timescales and uncertainty in motor adaptation.  Advances in Neural Information Processing Systems.
  • Krakauer JW, Shadmehr R (2007).  Towards a computational neuropsychology of action.  Progress in Brain Research.  165.
  • Tseng YW, Diedrichsen J, Krakauer JW, Shadmehr R, Bastian AJ (2007).  Sensory prediction errors drive cerebellum-dependent adaptation of reaching.  Journal of Neurophysiology.  98(1).
  • Diedrichsen J, Criscimagna-Hemminger SE, Shadmehr R (2007).  Dissociating timing and coordination as functions of the cerebellum.  Journal of Neuroscience.  27(23).
  • Kording KP, Tenenbaum JB, Shadmehr R (2007).  The dynamics of memory as a consequence of optimal adaptation to a changing body.  Nature Neuroscience.  10(6).
  • Huang VS, Shadmehr R (2007).  Evolution of motor memory during the seconds after observation of motor error.  Journal of Neurophysiology.  97(6).
  • Krakauer JW, Mazzoni P, Ghazizadeh A, Ravindran R, Shadmehr R (2006).  Generalization of motor learning depends on the history of prior action.  PLoS Biology.  4(10).
  • Chen H, Hua SE, Smith MA, Lenz FA, Shadmehr R (2006).  Effects of human cerebellar thalamus disruption on adaptive control of reaching.  Cerebral Cortex.  16(10).
  • Vaziri S, Diedrichsen J, Shadmehr R (2006).  Why does the brain predict sensory consequences of oculomotor commands? Optimal integration of the predicted and the actual sensory feedback.  Journal of Neuroscience.  26(16).
  • Hwang EJ, Smith MA, Shadmehr R (2006).  Dissociable effects of the implicit and explicit memory systems on learning control of reaching.  Experimental Brain Research.  173(3).
  • Smith MA, Ghazizadeh A, Shadmehr R (2006).  Interacting adaptive processes with different timescales underlie short-term motor learning.  PLoS Biology.  4(6).
  • Hwang EJ, Smith MA, Shadmehr R (2006).  Adaptation and generalization in acceleration-dependent force fields.  Experimental Brain Research.  169(4).
  • Krakauer JW, Shadmehr R (2006).  Consolidation of motor memory.  Trends in Neurosciences.  29(1).
  • Chen H, Smith MA, Shadmehr R (2005).  Effects of deep brain stimulation on adaptive control of reaching.  Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings.  7 VOLS.
  • Diedrichsen J, Hashambhoy Y, Rane T, Shadmehr R (2005).  Neural correlates of reach errors.  Journal of Neuroscience.  25(43).
  • Eun JH, Shadmehr R (2005).  Internal models of limb dynamics and the encoding of limb state.  Journal of Neural Engineering.  2(3).
  • Diedrichsen J, Shadmehr R (2005).  Detecting and adjusting for artifacts in fMRI time series data.  NeuroImage.  27(3).
  • Smith MA, Shadmehr R (2005).  Intact ability to learn internal models of arm dynamics in Huntington's disease but not cerebellar degeneration.  Journal of Neurophysiology.  93(5).
  • Dordevic GS, Rašic M, Shadmehr R (2005).  Parametric models for motion planning and control in biomimetic robotics.  IEEE Transactions on Robotics.  21(1).
  • Wainscott SK, Donchin O, Shadmehr R (2005).  Internal models and contextual cues: Encoding serial order and direction of movement.  Journal of Neurophysiology.  93(2).
  • Donchin O, Shadmehr R (2004).  Change of desired trajectory caused by training in a novel motor task.  Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings.  26 VI.
  • Shadmehr R (2004).  Generalization as a behavioral window to the neural mechanisms of learning internal models.  Human Movement Science.  23(5).
  • Nanayakkara T, Shadmehr R (2003).  Saccade Adaptation in Response to Altered Arm Dynamics.  Journal of Neurophysiology.  90(6).
  • Hwang EJ, Donchin O, Smith MA, Shadmehr R (2003).  A gain-field encoding of limb position and velocity in the internal model of arm dynamics.  PLoS Biology.  1(2).
  • Donchin O, Francis JT, Shadmehr R (2003).  Quantifying generalization from trial-by-trial behavior of adaptive systems that learn with basis functions: Theory and experiments in human motor control.  Journal of Neuroscience.  23(27).
  • Criscimagna-Hemminger SE, Donchin O, Gazzaniga MS, Shadmehr R (2003).  Learned dynamics of reaching movements generalize from dominant to nondominant arm.  Journal of Neurophysiology.  89(1).
  • Wang T, Dordevic GS, Shadmehr R (2002).  Learning the dynamics of reaching movements results in the modification of arm impedance and long-latency perturbation responses.  Biological Cybernetics.  86(6).
  • Nanayakkara DPT, Watanabe K, Kiguchi K, Shadmehr R (2002).  Intelligent control of a 7-DOF manipulator based on model primitives.  IEEE International Symposium on Intelligent Control - Proceedings.
  • Donchin O, Sawaki L, Madupu G, Cohen LG, Shadmehr R (2002).  Mechanisms influencing acquisition and recall of motor memories.  Journal of Neurophysiology.  88(4).
  • Ariff G, Donchin O, Nanayakkara T, Shadmehr R (2002).  A real-time state predictor in motor control: Study of saccadic eye movements during unseen reaching movements.  Journal of Neuroscience.  22(17).
  • Donchin O, Shadmehr R (2002).  Linking motor learning to function approximation: Learning in an unlearnable force field.  Advances in Neural Information Processing Systems.
  • Wang T, Dordevic GS, Shadmehr R (2001).  Learning the dynamics of reaching movements results in the modification of arm impedance and long-latency perturbation responses.  Biological Cybernetics.  85(6).
  • Nezafat R, Shadmehr R, Holcomb HH (2001).  Long-term adaptation to dynamics of reaching movements: A PET study.  Experimental Brain Research.  140(1).
  • Shadmehr R, Moussavi ZMK (2000).  Spatial generalization from learning dynamics of reaching movements.  Journal of Neuroscience.  20(20).
  • Thoroughman KA, Shadmehr R (2000).  Learning of action through adaptive combination of motor primitives.  Nature.  407(6805).
  • Smith MA, Shadmehr R (2000).  Error correction and the basal ganglia Response to Lawrence (2000).  Trends in Cognitive Sciences.  4(10).
  • Smith MA, Brandt J, Shadmehr R (2000).  Motor disorder in Huntington's disease begins as a dysfunction in error feedback control.  Nature.  403(6769).
  • Tamminga CA, Shadmehr R, Holcomb HH (2000).  Cognition: Procedural memory.  American Journal of Psychiatry.  157(2).
  • Tamminga CA, Holcomb HH, Shadmehr R (2000).  Images in neuroscience.  American Journal of Psychiatry.  157(3).
  • Bhushan N, Shadmehr R (1999).  Computational nature of human adaptive control during learning of reaching movements in force fields.  Biological Cybernetics.  81(1).
  • Thoroughman KA, Shadmehr R (1999).  Electromyographic correlates of learning an internal model of reaching movements.  Journal of Neuroscience.  19(19).
  • Shadmehr R, Holcomb HH (1999).  Inhibitory control of competing motor memories.  Experimental Brain Research.  126(2).
  • Bhushan N, Shadmehr R (1999).  Evidence for a forward dynamics model in human adaptive motor control.  Advances in Neural Information Processing Systems.
  • Shadmehr R, Brandt J, Corkin S (1998).  Time-dependent motor memory processes in amnesic subjects.  Journal of Neurophysiology.  80(3).
  • Shadmehr R, Holcomb HH (1997).  Neural correlates of motor memory consolidation.  Science.  277(5327).
  • Todorov E, Shadmehr R, Bizzi E (1997).  Augmented feedback presented in a virtual environment accelerates learning of a difficult motor task.  Journal of Motor Behavior.  29(2).
  • Shadmehr R, Brashers-Krug T (1997).  Functional stages in the formation of human long-term motor memory.  Journal of Neuroscience.  17(1).
  • Brashers-Krug T, Shadmehr R, Bizzi E (1996).  Consolidation in human motor memory.  Nature.  382(6588).
  • Sanes JN, Shadmehr R (1995).  Sense of muscular effort and somesthetic afferent information in humans.  Canadian Journal of Physiology and Pharmacology.  73(2).
  • Shadmehr R, Mussa-Ivaldi FA (1994).  Adaptive representation of dynamics during learning of a motor task.  Journal of Neuroscience.  14(5 II).
  • Shadmehr R, Mussa-Ivaldi FA, Bizzi E (1993).  Postural force fields of the human arm and their role in generating multijoint movements.  Journal of Neuroscience.  13(1).
  • Shadmehr R (1993).  Control of equilibrium position and stiffness through postural modules.  Journal of Motor Behavior.  25(3).
  • Shadmehr R, Arbib MA (1992).  A mathematical analysis of the force-stiffness characteristics of muscles in control of a single joint system.  Biological Cybernetics.  66(6).
  • Shadmehr R, Angell D, Chou PB, Oehrlein GS, Jaffe RS (1992).  Principal component analysis of optical emission spectroscopy and mass spectrometry. Application to reactive ion etch process parameter estimation using neural networks.  Journal of the Electrochemical Society.  139(3).
  • Belman MJ, Shadmehr R (1991).  A target feedback device for ventilatory muscle training.  Journal of Clinical Monitoring.  7(1).
  • Belman MJ, Soo Hoo GW, Kuei JH, Shadmehr R (1990).  Efficacy of positive vs negative pressure ventilation in unloading the respiratory muscles.  Chest.  98(4).
  • Kuei JH, Shadmehr R, Sieck GC (1990).  Relative contribution of neurotransmission failure to diaphragm fatigue.  Journal of Applied Physiology.  68(1).
  • Shadmehr R, D'Argenio DZ (1989).  Connectionist modeling vs. Bayesian procedures for sparse data pharmacokinetic parameter estimation.  Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings.  11 pt 6.
  • Shadmehr R (1989).  Implementation of the equilibrium trajectory hypothesis for movement generation in the arm.  IJCNN Int Jt Conf Neural Network.
  • Shadmehr R, Lindquist GD (1988).  Neural model for modifiable pattern generation in the scratch reflex.  Neural Networks.  1(1 SUPPL).
  • Belman MJ, Shadmehr R (1988).  Targeted resistive ventilatory muscle training in chronic obstructive pulmonary disease.  Journal of Applied Physiology.  65(6).
  • Shadmehr R, Lindquist GD (1988).  Neural network for pattern generation in the scratch reflex.
Book Chapters
  • Shadmehr R (2010).  Computational Approaches to Motor Control.  Encyclopedia of Neuroscience.
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