JHU BME

Laboratory for Computational
Motor Control


Research Overview

 

Publications

 

Courses

 

Lectures

 

Journal Club

 

People


Lab Calendar


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Publications


Books

Biological learning and control: How the brain builds representations, predicts events, and makes decisions

Reza Shadmehr and Sandro Mussa-Ivaldi (2012) MIT Press, Cambridge MA

Peggy Walton, Spotlight on Books, BioScience 63:220-223, 2013

 

Computational Neurobiology of Reaching and Pointing: A Foundation for Motor Learning

Reza Shadmehr and Steven P. Wise (2005) MIT Press, Cambridge MA.

Stefan Schaal, Network: Computation in Neural Systems 18:1-3, 2007

Stephen Scott, Quart Rev Biology 81:86, 2006

Stephen Grill, Annals of Neurology 58:492, 2005

 


Review Articles

Electrifying the motor engram: effects of tDCS on motor learning and control. JJO de Xivry and R Shadmehr (2014) Experimental Brain Research in press.

Motor variability is not noise, but grist for the learning mill. DJ Herzfeld and R Shadmehr (2014) Nature Neuroscience 18:66-67.

Cerebellum estimates the sensory state of the body. DJ Herzfeld and R Shadmehr (2014) Trends in Cognitive Neurosciences 18:66-67.

Control of movements and temporal discounting of reward. R Shadmehr (2010) Current Opinion in Neurobiology 20:1-5.

The coordination of movement: optimal feedback control and beyond. J Diedrichsen, R Shadmehr, and RB Ivry (2010) Trends in Cognitive Sciences 14:31-39.

Error correction, sensory prediction, and adaptation in motor control. R Shadmehr, MA Smith, and JW Krakauer (2010) Annual Reviews of Neuroscience 33:89-108.

Computational neuroanatomy of voluntary motor control. R Shadmehr and JW Krakauer (2009) In: The Cognitive Neurosciences, MS Gazzaniga (ed.) MIT Press, pp. 587-597.

Computational approaches to motor control. R Shadmehr (2009) In: LR Squire (ed.) Encyclopedia of Neuroscience 3:9-17.

A computational neuroanatomy for motor control. R Shadmehr and JW Krakauer (2008) Experimental Brain Research 185:359-381. Abstract

Towards a computational neuropsychology of action.  JW Krakauer and R Shadmehr (2007) Progress in Brain Research 165:383-394. Abstract

Consolidation of motor memory. JW Krakauer and R Shadmehr (2006) Trends in Neurosciences 29:58-64.  Abstract

Learning dynamics of reaching. R Shadmehr, O Donchin, EJ Hwang, SE Hemminger, and A Rao (2005) Motor Cortex in Voluntary Movements: A distributed system for distributed functions, A. Riehle and E. Vaadia (eds), CRC Press, pp. 297-328.  Abstract

Generalization as a behavioral window to the neural mechanisms of learning internal models. R Shadmehr (2004) Human Movement Science, 23:543-568. 
Abstract

Motor Learning and Memory for Reaching and Pointing. R Shadmehr and SP Wise (2004) In: The Cognitive Neurosciences, Third Edition, M.S. Gazzaniga (ed), MIT Press, pp. 511-524.
Abstract

Motor control. Wise SP, R Shadmehr (2002) In: Encyclopedia of the Human Brain, Ramachandran, V. S. (ed), Academic Press: San Diego, CA, vol. 3, pp. 137-157.

Error correction and the basal ganglia. Smith MA, and R Shadmehr (2000) Trends in Cognitive Sciences, 4:367-369.

Learning and memory formation of arm movements. R Shadmehr, Thoroughman K (2000) In: Biomechanics and Neural Control of Movement, J. M. Winters and P. E. Crago (eds), Springer-Verlag, pp. 347-353.

The equilibrium point hypothesis for control of posture, movement, and manipulation.  R Shadmehr (1998) In: Handbook of Brain Theory and Neural Networks, M. A. Arbib (ed), MIT Press, pp. 370-372.  Abstract

Issues of actuator and kinematic redundancy in biological motor control . R Shadmehr (1991) In: Research Notes in Neural Computing: Visual Structures and Integrated Functions, MA Arbib, J-P Ewert (eds), Springer, pp. 239-254. Abstract


Research Articles

2014

Optimizing effort: time away from practice increases efficiency of motor memory. SE Pekny and R Shadmehr (2014) Journal of Neurophysiology, in press.

A memory of errors in sensorimotor learning. DJ Herzfeld, PA Vaswani, MK Marko, and R Shadmehr (2014) Science 345:1349-1353.

Contributions of the cerebellum and the motor cortex to acquistion and retention of motor memories. DJ Herzfeld, D Pastor, AM Haith, Yves Rossetti, R Shadmehr, and J O'Shea (2014) NeuroImage 98:147-158.

Motor costs and the coordination of the two arms. Y Salimpour and R Shadmehr (2014) Journal of Neuroscience 34:1806-1818. ThisWeekintheJournal

Vigor of movements and the cost of time in decision making. JES Choi, PA Vaswani, and R Shadmehr (2014) Journal of Neuroscience 34:1212-1223.

2013

Decay of motor memories in the absence of error. PA Vaswani and R Shadmehr (2013) Journal of Neuroscience 33:7700-7709.

Changes in corticospinal excitability during reach adaptation in force fields. JJ Orban de Xivry, MA Ahmadi-Pajouh, MD Harran, Y Salimpour, and R Shadmehr (2013) Journal of Neurophysiology 109:124-136.

2012

Evidence for hyperbolic temporal discounting of reward in control of movements. AM Haith, TR Reppert, and R Shadmehr (2012) Journal of Neuroscience 32:11727-11736. Abstract

Sensitivity to prediction error in reach adaptation. MK Marko, AM Haith, MD Harran, and R Shadmehr (2012) Journal of Neurophysiology 108:1752-1663. Abstract

Preparing to reach: selecting an adaptive long-latency feedback controller. MA Ahmadi-Pajouh, F Towhidkhah, and R Shadmehr (2012) Journal of Neuroscience 32:9537-9545. Abstract

Changes in saccade kinematics associated with the value and novelty of a stimulus. TR Reppert, JES Choi, AM Haith, and R Shadmehr (2012) Conference on Information Sciences and Systems 46:1-5. Abstract

Cerebellar contributions to reach adaptation and learning sensory consequences of action. J Izawa, SE Criscimagna-Hemminger, and R Shadmehr (2012) Journal of Neuroscience 32:4230-4239. Abstract

Motor learning relies on integrated sensory inputs in ADHD, but over-selectively on proprioception in Autism spectrum conditions. J Izawa, SE Pekny, MK Marko, C Haswell, R Shadmehr, and SH Mostofsky (2012) Autism Research 5:124-136. Abstract

2011

Protection and expression of human motor memories. SE Pekny, SE Criscimagna-Hemminger, and R Shadmehr (2011) Journal of Neuroscience 31:13829-13839. Abstract

TMS perturbs saccade trajectories and unmasks an internal feedback controller for saccades.  M Xu-Wilson, J Tian, R Shadmehr, and DS Zee (2011) Journal of Neuroscience, 31: 11537-11546.  Abstract

Stimulation of the human motor cortex alters generalization patterns of motor learning. JJ Orban de Xivry, MK Marko, SE Pekny, D Pastor, J Izawa, P Celnik, and R Shadmehr (2011) Journal of Neuroscience, 31:7102-7110. Abstract

Contributions of the motor cortex to adaptive control of reaching depend on the perturbation schedule. JJ Orban de Xivry, SE Criscimagna-Hemminger, and R Shadmehr (2011) Cerebral Cortex 21:1475-1484. Abstract

Learning from sensory and reward prediction errors during motor adaptation. J Izawa and R Shadmehr (2011) PLoS Computational Biology 7:e1002012. Abstract

2010

A shared resource between declarative memory and motor memory. A Keisler and R Shadmehr (2010) Journal of Neuroscience 30:14915-14924. Abstract ThisWeekintheJournal CurrentBiologyReview JNS-JournalClub

Temporal discounting of reward and the cost of time in motor control (2010).  R Shadmehr, JJ Orban de Xivry, M Xu-Wilson, and TY Shih.  Journal of Neuroscience 30:10507-10516.  Abstract  ThisWeekintheJournal

Size of error affects cerebellar contributions to motor learning. SE Criscimagna-Hemminger, AJ Bastian, and R Shadmehr (2010) Journal of Neurophysiology 103:2275-2284. Abstract

2009

Cerebellar contributions to adaptive control of saccades in humans. M Xu-Wilson, H Chen-Harris, DS Zee, and R Shadmehr (2009) Journal of Neuroscience 29:12930-12939. Abstract

Representation of internal models of action in the autistic brain. C Haswell, J Izawa, L Dowell, SH Mostofsky, and R Shadmehr (2009) Nature Neuroscience 12:970-972. Abstract

Persistence of motor memories reflects statistics of the learning event. VS Huang and R Shadmehr (2009) Journal of Neurophysiology 102:931-940. Abstract

The intrinsic value of visual information affects saccade velocities. M Xu-Wilson, DS Zee, and R Shadmehr (2009) Experimental Brain Research 196:475-481. Abstract

2008

Changes in control of saccades during gain adaptation. V Ethier, DS Zee, and R Shadmehr (2008) Journal of Neuroscience 28:13929-13937. Abstract

Acquisition of internal models of motor tasks in children with autism. JC Gidley-Larson, AJ Bastian, O Donchin, R Shadmehr, and SH Mostofsky (2008) Brain 131:2894-2903. Abstract

Online processing of uncertain information in visuomotor control. J Izawa and R Shadmehr (2008) Journal of Neuroscience 28:11360-11368. Abstract Supplementary-material Matlab-Code

Consolidation patterns of human motor memory. SE Criscimagna-Hemminger and R Shadmehr (2008) Journal of Neuroscience 28:9610-9618. Abstract  

Reach adaptation: what determines whether we learn an internal model of the tool or adapt the model of our arm? J Kluzik, J Diedrichsen, R Shadmehr, and AJ Bastian (2008) Journal of Neurophysiology 100:1455-1464. Abstract

Active learning: learning a motor skill without a coach. VS Huang, R Shadmehr, and J Diedrichsen (2008) Journal of Neurophysiology 100:879-887. Abstract

Spontaneous recovery of motor memory during saccade adaptation. V Ethier, DS Zee, and R Shadmehr (2008) Journal of Neurophysiology 99:2577-2583.  Abstract

Adaptive control of saccades via internal feedback. H Chen-Harris, WM Joiner, V Ethier, DS Zee, and R Shadmehr (2008) Journal of Neuroscience 28:2804-2813.  Abstract Supplementary-material JNS-JournalClub

Motor adaptation as a process of reoptimization.  J Izawa, T Rane, O Donchin, and R Shadmehr (2008) Journal of Neuroscience 28:2883-2891.  Abstract Supplementary-material

Sequential neural changes during motor learning in schizophrenia.  LM Rowland, R Shadmehr, D Kravitz, and HH Holcomb (2008) Psychiatry Research Neuroimaging 163:1-12.  Abstract

2007

Impairment of retention but not acquisition of a visuomotor skill through time-dependent disruption of primary motor cortex. A Hadipour-Niktarash, CK Lee, JE Desmond, and R Shadmehr (2007) Journal of Neuroscience 27:13413-13419.  Abstract

Sensory prediction errors drive cerebellum-dependent adaptation of reaching. YW Tseng, J Diedrichsen, JW Krakauer, R Shadmehr, and AJ Bastian (2007) Journal of Neurophysiology 98:54-62.  Abstract

Dissociating timing and coordination as functions of the cerebellum. J Diedrichsen, SE Criscimagna-Hemminger, and R Shadmehr (2007)   Journal of Neuroscience, 27:6291-6301. Abstract

Evolution of motor memory during the seconds after observation of motor error.  VS Huang and R Shadmehr (2007) Journal of Neurophysiology 97:3976-3985.  Abstract

The dynamics of memory as a consequence of optimal adaptation to a changing body. KP Kording, J Tenenbaum, and R Shadmehr (2007)   Nature Neuroscience 10:779-786.  Abstract

2006

Generalization of motor learning depends on history of prior action. JW Krakauer, P Mazzoni, A Ghazizadeh, R Ravindran, and R Shadmehr (2006)   PLoS Biology, 4:e316.  Abstract

A spatially unbiased atlas template of the human cerebellum.  J Diedrichsen (2006) NeuroImage, 33:127-138.  Abstract

Effects of cerebellar thalamus disruption on adaptive control of reaching. H Chen, SE Hua, MA Smith, FA Lenz, and R Shadmehr (2006) Cerebral Cortex, 16:1462-1473.  Abstract

Interacting adaptive processes with different timescales underlie short-term motor learning.  MA Smith, A Ghazizadeh, and R Shadmehr (2006) PLoS Biology 4:e179.  Abstract  Synopsis

Why does the brain predict sensory consequences of oculomotor commands?  Optimal integration of the predicted and the actual sensory feedback. S Vaziri, J Diedrichsen, and R Shadmehr (2006) Journal of Neuroscience, 26:4188-4197.  Abstract

Dissociable effects of the implicit and explicit memory systems on learning control of reaching.  EJ Hwang, MA Smith, and R Shadmehr (2006) Experimental Brain Research, 173:425-437.  Abstract

Adaptation and generalization in acceleration dependent force fields. EJ Hwang, MA Smith, and R Shadmehr (2006)   Experimental Brain Research 169:496-506.  Abstract

2005

Neural correlates of reach errors. J Diedrichsen, Y Hashambhoy, T Rane, and R Shadmehr (2005)  Journal of Neuroscience 25:9919-9931.  Abstract

Internal models of limb dynamics and encoding of limb state. EJ Hwang and R Shadmehr (2005)   Journal of Neural Engineering 2:S266-S278.  Abstract

Detecting and adjusting for artifacts in fMRI time series data. J Diedrichsen, and R Shadmehr (2005)   Neuroimage 27:624-634. Abstract

Intact ability to learn internal models of arm dynamics in Huntington's disease but not cerebellar degeneration. MA Smith and R Shadmehr (2005) Journal of Neurophysiology 93:2809-2821. Abstract

Internal models and contextual cues: encoding serial order and direction of movement. SK Wainscott, O Donchin, and R Shadmehr (2005) Journal of Neurophysiology 93:786-800. 
Abstract

Parametric models for motion planning and control in biomimetic robotics. GS Dordevic, M Rasic, and R Shadmehr (2005) IEEE Transactions in Robotics 21:80-92.
Abstract

2004

Change in desired trajectory caused by training in a novel motor task. O Donchin, and R Shadmehr (2004) Proc IEEE EMBS 26:4495-4497. Abstract

2003

Saccade adaptation in response to altered arm dynamics. T Nanayakkara, and R Shadmehr (2003) Journal of Neurophysiology 90:4016-4021. Abstract

A Gain-Field Encoding of Limb Position and Velocity in the Internal Model of Arm Dynamics. EJ Hwang, O Donchin, MA Smith, and R Shadmehr (2003) PLoS Biology 1(2):209-220. 
Abstract  Supplementary-material  Synopsis

Quantifying generalization from trial-by-trial behavior of adaptive systems that learn with basis functions: Theory and experiments in human motor control. O Donchin, JT Francis, and R Shadmehr (2003) Journal of Neuroscience, 23:9032-9045. 
Abstract  Supplementary-material
 
Learned dynamics of reaching movements generalize from dominant to non-dominant arm. SE Criscimagna-Hemminger, O Donchin, MS Gazzaniga, and R Shadmehr (2003) Journal of Neurophysiology 89:168-176. 
Abstract

2002

Mechanisms influencing acquisition and recall of motor memories. O Donchin, L Sawaki, G Madupu, LG Cohen, and R Shadmehr (2002) Journal of Neurophysiology 88:2114-2123.  Abstract

A real-time state predictor in motor control: study of saccadic eye movements during unseen reaching movements. G Ariff, O Donchin, T Nanayakkara, and R Shadmehr (2002) Journal of Neuroscience 22:7721-7729.  Abstract

Linking motor learning to function approximation: Learning in an unlearnable force field. O Donchin and R Shadmehr (2002) Adv Neural Inform Proc Systems, Dietterich T. G., Becker S., Ghahramani Z. (eds), MIT Press, Cambridge, MA, vol. 14, pp. 197-203.  Abstract

2001

Learning dynamics of reaching movements results in the modification of arm impedance and long-latency perturbation responses. T Wang, GS Dordevic, and R Shadmehr (2001) Biological Cybernetics 85:437-448.  Abstract

Long-Term Adaptation to Dynamics of Reaching Movements: A PET Study. R Nezafat, R Shadmehr, and HH Holcomb (2001) Experimental Brain Research 140:66-76.  Abstract

2000

Learning of action through adaptive combination of motor primitives. KA Thoroughman and R Shadmehr (2000) Nature 407:742-747.  Abstract  News&Views

Spatial generalization from learning dynamics of reaching movements. R Shadmehr and ZMK Moussavi (2000) Journal of Neuroscience, 20:7807-7815.  Abstract

Motor disorder in Huntington's disease begins as a dysfunction in error feedback control. MA Smith, J Brandt, and R Shadmehr (2000) Nature 403:544-549.  Abstract  News&Views

1999

Electromyographic correlates of learning an internal model of reaching movements. KA Thoroughman and R Shadmehr (1999) Journal of Neuroscience 19:8573-8588.  Abstract

Computational nature of human adaptive control during learning of reaching movements in force fields. N Bhushan, and R Shadmehr (1999) Biological Cybernetics 81:39-60.  Abstract

Evidence for a forward dynamics model in human adaptive motor control. N Bhushan, and R Shadmehr (1999) Adv Neural Inform Proc Systems 11:3-9.  Abstract

Inhibitory Control of Competing Motor Memories. R Shadmehr, and HH Holcomb (1999) Experimental Brain Research 126:235-251.  Abstract

1998

Time dependent motor memory processes in amnesic subjects. R Shadmehr, J Brandt, and S Corkin (1998) Journal of Neurophysiology 80:1590-1597.  Abstract

1997

Neural correlates of motor memory consolidation. R Shadmehr and HH Holcomb (1997) Science 277:821-825.  Abstract

Functional stages in the formation of human long-term motor memory. R Shadmehr and T Brashers-Krug (1997) Journal of Neuroscience 17:409-419. Abstract

Augmented feedback presented in a virtual environment accelerates learning of a difficult motor task. E Todorov, R Shadmehr, and E Bizzi (1997) Journal of Motor Behaviour 29:147-158 Abstract

1996

Consolidation in human motor memory. T Brashers-Krug, R Shadmehr, and E Bizzi (1996) Nature 382:252-255.  Abstract

1995

Sense of muscular effort and somesthetic afferent information in humans. JN Sanes, and R Shadmehr (1995) Can J Physiol Pharmacol, 73(2):223-233. Abstract

Interference in learning internal models of inverse dynamics in humans. R Shadmehr, T Brashers-Krug, and FA Mussa-Ivaldi (1995) In: Advances in Neural Information Processing Systems, vol. 7, G Tesauro, DS Touretzky, TK Leen (eds), MIT Press, pp. 1117-24. Abstract

Catastrophic interference in human motor learning. T Brashers-Krug, R Shadmehr, and E Todorov (1995) In: Advances in Neural Information Processing Systems, vol. 7, G Tesauro, DS Touretzky, TK Leen (eds), MIT Press, pp. 19-26. Abstract

1994

Adaptive representation of dynamics during learning of a motor task. R Shadmehr and FA Mussa-Ivaldi (1994) Journal of Neuroscience 14:3208-3224. Abstract

Computational elements of the adaptive controller of the human arm. R Shadmehr, and FA Mussa-Ivaldi (1994) In: Advances in Neural Information Processing Systems, JD Cowan, G Tesauro, J Alspector (eds), vol. 6, Morgan Kaufmann, pp. 1077-1084. Abstract

1993

Postural force fields of the human arm and their role in generating multi-joint movements. R Shadmehr, FA Mussa-Ivaldi, E Bizzi (1993) Journal of Neuroscience 13(1):45-62.  Abstract

Control of equilibrium position and stiffness through postural modules. R Shadmehr (1993) Journal of Motor Behavior 25(3):228-241. Abstract

Geometric structure of the adaptive controller of the human arm. R Shadmehr and FA Mussa-Ivaldi (1993) A.I. Memo 1437, Artificial Intelligence Laboratory, M. I. T. Abstract

1992

Principal component analysis of optical emission spectroscopy and mass spectrometry: Application to Reactive Ion Etch process parameter estimation. R Shadmehr, D Angell, PB Chou, GS Oehrlein, and RS Jaffe (1992) Journal of Electrochemical Society 139(3):907-914. Abstract

A mathematical analysis of the force-stiffness characteristics of muscles and the role of reflexes in control of a single joint system. R Shadmehr, and MA Arbib (1992) Biological Cybernetics 66:463-477. Abstract

1991

A target feedback device for ventilatory muscle training. MJ Belman and R Shadmehr (1991) Journal of Clinical Monitoring 7(1):42-48. Abstract

1990

Learning virtual equilibrium trajectories for control of a robot arm. R Shadmehr (1990) Neural Computation 2(4):446-456. Abstract

A neural network for non-linear Bayesian estimation in drug therapy. R Shadmehr and DZ D'Argenio (1990) Neural Computation 2:216-225. Abstract

Relative contribution of neuro-transmission failure to muscle fatigue. JH Kuei, R Shadmehr, and GC Sieck (1990) Journal of Applied Physiology 68(1):174-180. Abstract

Efficacy of positive vs. negative pressure ventilation in unloading the respiratory muscles. MJ Belman, GW Soo Hoo, JH Kuei, and R Shadmehr (1990) Chest 98:850-856. Abstract

1989

A neural model for generation of some behaviors in the fictive scratch reflex. R Shadmehr (1989) Neural Computation 1(2):240-250. Abstract

1988

Targeted resistive ventilatory muscle training in chronic obstructive pulmonary disease. MJ Belman and R Shadmehr (1988) Journal of Applied Physiology 65:2726-2735.  Abstract


Theses

Action selection in motor control: error, reward, and time. Pavan A. Vaswani (2014) PhD Thesis, Johns Hopkins University.

Protection and extinction of motor memories: interference from the declarative memory system in context switching. Aymeric Blanc (2013) MS Thesis, Johns Hopkins University.

Adaptive control of saccades via internal feedback. Minnan Xu (2010) PhD Thesis, Johns Hopkins University.

Linking error, passage of time, the cerebellum and the primary motor cortex to the multiple timescales of motor memory. Sarah Hemminger (2010) PhD Thesis, Johns Hopkins University.

Adaptive control of saccades in humans. Vincent Ethier (2008) MS Thesis, Johns Hopkins University.

Enhancing motor learning through theoretical and experimental methods: Acquisition, retention, and learning strategies. Vincent Huang (2007) PhD Thesis, Johns Hopkins University.

Cerebellar and Cerebellar-Thalamic Contributions to Motor Adaptation. Haiyin Chen (2007) PhD Thesis, Johns Hopkins University.

Time-dependent contribution of primary motor cortex to visuomotor memory retention. Christine Lee (2006) MS Thesis, Johns Hopkins University.

Effects of changing noise in dynamics of reaching on changes in control of reaching: an optimal control perspective. Tushar Rane (2006) MS Thesis, Johns Hopkins University.

Saccadic remapping of reach targets. Siavash Vaziri (2006)   MS Thesis, Johns Hopkins University.

State-space models of online acquisition in motor memory. Ali Ghazizadeh (2005) MS Thesis, Johns Hopkins University.

Representation of proprioceptive information for generation of arm dynamics. EunJung Hwang (2004) PhD Thesis, Johns Hopkins University.

The influence of a forward model of arm dynamics on eye behavior in saccadic tracking of manual reaching tasks. Greg D. Ariff (2001) MS Thesis, Johns Hopkins University.

Error correction, the basal ganglia, and the cerebellum. Maurice Smith (2001) PhD Thesis, Johns Hopkins University.

Control force change due to adaptation of forward model in human motor control. Tie Wang (2000) MS Thesis, Johns Hopkins University.

Human motor learning in stationary and nonstationary novel dynamic environments: psychophysical, electromyographic, and computational verification and extension of the inverse model hypothesis. Kurt A. Thoroughman (1999) PhD Thesis, Johns Hopkins University.

A Computational Approach to Human Adaptive Motor Control. Nikhil Bhushan (1998) MS Thesis, Johns Hopkins University.

A computational theory for posture and movement in a multi-joint limb. Reza Shadmehr (1991), Technical Report 91-7, Center for Neural Engineering, University of Southern California, Los Angeles, CA. Abstract


Book Reviews

The motor cortex re-imagined. Reza Shadmehr (2009) Nature Neuroscience 12:667. Review of "The Intelligent Movement Machine: An Ethological Perspective on the Primate Motor System" by Michael S. A. Grazziano.