Home


Motor cortex studies

C. Capaday. On the variability of motor evoked potentials: Experimental results and mathematical model. Exp. Brain Res.239:2979-2995 https://doi.org/10.1007/s00221-021-06169-7, 2021.

C. Capaday and C. Van Vreeswijk. Linear summation of outputs in a balanced network model of motor cortex. Frontiers Comp. Neurosci. Front Comput Neurosci 9:63. doi: 10.3389/fncom.2015.00063, 2015.

C. Capaday, C. Ethier, C. Van Vreeswijk and W.G. Darling. On the functional organization and operational principles of the motor cortex. Frontiers in Neural Circuits, DOI: 10.3389/fncir.2013.00066, 2013.

N. Kouchtir-Devanne, C. Capaday, F. Cassim, P. Derambure and H. Devanne. Task-dependent changes of intracortical network excitability in the human motor cortex during precision grip vs. isolated finger contraction. J. Neurophysiol, 107:1522-1599, 2012.

C. Capaday, C. Van Vreeswijk, C. Ethier, J. Ferkinghoff-Borg and D. Weber. Neural mechanism of activity spread in the cat motor cortex and its relation to the intrinsic connectivity. J. Physiol. 589: 2515-2528, 2001. *** Editor's choice May issue, 2011. ***

    See the supporting perspectives article

M. Graziano. Cables vs. networks: old and new views on the function of motor  cortex. J. Physiol. 589: 2431, 2011.

C. Capaday, C. Ethier, L. Brizzi, A. Sik, C. Van Vreeswijk and D. Gingras. On the Nature of the Intrinsic Connectivity of the Cat Motor Cortex: Evidence for a Recurrent Neural Network Topology. J.Neurophysiol. 102: 2131–2141, 2009.

C. Ethier, L. Brizzi, D. Giguere and C. Capaday. Corticospinal control of antagonistic muscles in the cat. Eur. J. Neurosci. 6: 1632-41, 2007.

C. Ethier, L. Brizzi, W.G. Darling and C. Capaday. Linear summation of cat motor cortex outputs. J. Neurosci. 26: 5574-81, 2006.

H. Devanne, F. Cassim, C. Ethier, L. Brizzi, A. Thévenon and C. Capaday. The comparable size and overlapping nature of proximal and distal muscle representations in the human motor cortex. Eur. J. Neurosci. 23: 2467-2478, 2006.

C. Schneider, B.A. Lavoie, H. Barbeau and C. Capaday. The timing of cortical excitability changes during the reaction time of movements superimposed on tonic motor activity. J. Appl. Physiol. 97: 2220-2227, 2004.

C. Capaday. The integrated nature of motor cortical function. The Neuroscientist. 10: 207-220, 2004.

C. Capaday and D. Rasmusson. Expansion of receptive fields of motor cortex neurons by GABAA receptor antagonists. Exp. Brain Res. 153: 118-22, 2003.

C. Schneider, H. Devanne, B.A. Lavoie and C. Capaday. Neural mechanisms involved in the functional linking of motor cortical points. Exp. Brain Res. 146: 86-94, 2002.

H. Devanne, N. Koushtir, L.G. Cohen and C. Capaday. Integrated motor cortical control of task-related muscles during pointing in humans. J. Neurophysiol. 87: 3006-3017, 2002.

C. Schneider, D. Zytnicki and C. Capaday. Quantitative evidence for multiple widespread representations of individual muscles in the cat motor cortex. Neurosci. Letters. 310: 183-187, 2001.

C. Capaday, H. Devanne, L. Bertrand and B.A. Lavoie. Intracortical connections between motor cortical zones controlling antagonistic muscles in the cat: a combined anatomical and physiological study. Exp. Brain Res. 120: 223-232, 1998.

H. Devanne, B.A. Lavoie and C. Capaday. Input-output properties and gain changes in the human corticospinal pathway. Exp. Brain Res. 114:329-338, 1997.

B.A. Lavoie, F.W.J. Cody and C. Capaday. Cortical control of the human soleus muscle during voluntary and postural activities studied using focal magnetic stimulation. Exp. Brain Res. 103: 97-107, 1995.

 


Neural control of human walking

A. Prochazka, S. Gosgnach, C. Capaday and H. Geyer. Neuromuscular models for locomotion. In: Bioinspired Legged Locomotion: Models, Concepts, Control and Applications. Edited by Sharbafi M, and Seyfarth A., Butterworth-Heinemann, 2017.

V. Ung, M-A Imbeault, C. Ethier, L. Brizzi and C. Capaday. On the potential role of the corticospinal tract in the control and progressive adaptation of the H-reflex during backward walking. J. Neurophysiol. 94: 1133-1142, 2005.

C. Éthier, M.A. Imbeault, V. Ung and C. Capaday. On the soleus H-reflex modulation pattern during walking. Exp. Brain Res. 151: 420-425, 2003.

C. Schneider and C. Capaday. Progressive adaptation of the soleus H-reflex in humans with daily training at walking backward. J. Neurophysiol. 89: 648-656, 2003.

C. Schneider, B.A. Lavoie and C. Capaday. On the origin of the H-reflex modulation pattern during human walking and the task dependent differences in its amplitude. J. Neurophysiol. 83: 2881-2890, 2000.

C. Capaday, B.A. Lavoie, H. Barbeau, C. Schneider and M. Bonnard. Studies on the corticospinal control of human walking I:  responses to focal transcranial magnetic stimulation of the motor Cortex. J. Neurophysiol. 81: 129-139, 1999.

B.A. Lavoie, H.  Devanne and C. Capaday.  Differential control of reciprocal inhibition during walking versus postural and voluntary motor tasks in humans. J. Neurophysiol. 78: 429-438, 1997.

C. Capaday, B. A. Lavoie and F. Comeau. Differential effects of a flexor nerve input on the soleus H-reflex during standing versus walking in humans. Can J. Physiol and Pharmacol. 73: 436-449, 1995.

C. Capaday, F.W.J. Cody and R.B. Stein. Reciprocal inhibition of soleus motor output in humans during walking and voluntary tonic activity.  J. Neurophysiol. 64: 607-616, 1990.

C. Capaday and R.B. Stein. Difference in the amplitude of the human Soleus H-reflex during walking and running.  J.  Physiol. 392: 513-522, 1987.

C. Capaday and R.B. Stein. Amplitude modulation of the Soleus H-reflex in the Human during Walking and Standing.  J. Neurosci. 6: 1308-1313, 1986.

 


Neural modeling

C. Capaday. On the variability of motor evoked potentials: Experimental results and mathematical model. Exp. Brain Res.239:2979-2995 https://doi.org/10.1007/s00221-021-06169-7, 2021.

C. Capaday and C. Van Vreeswijk. Linear summation of outputs in a balanced network model of motor cortex. Frontiers Comp. Neurosci. Front Comput Neurosci 9:63. doi: 10.3389/fncom.2015.00063, 2015.

C. Capaday and C. Van Vreeswijk. Direct control of firing rate gain by dendritic shunting inhibition. J. Integr. Neurosci. 5: 199-222, 2006.

C. Capaday. A re-examination of the possibility of controlling the firing rate gain of neurons by balancing excitatory and inhibitory conductances. Exp. Brain Res. 143: 67-77, 2002.

C. Capaday and R.B. Stein. A method for simulating the reflex output of a motoneuron pool. J. Neurosci. Meth. 21: 91-104, 1987.

 


Spinal & transcortical stretch reflex

C. Capaday. Force feedback during human walking. Trends Neurosci. 24:10, 2001.

C. Capaday. Control of a ‘simple’ stretch reflex in humans. Trends Neurosci. 23: 528-529, 2000.

C. Capaday. The effects of Baclofen on the stretch reflex parameters of the cat. Exp. Brain Res. 104: 287-296, 1995.

C. Capaday, R. Forget and T.E. Milner. A re-examination of the effects of instruction on the long latency stretch reflex response of the human flexor pollicis longus muscle.  Exp. Brain Res. 100: 515-521, 1994.

C. Capaday, R. Forget, R. Fraser and Y. Lamarre. Evidence for a contribution of the motor cortex to the long-latency stretch reflex of the human thumb. J. Physiol. 440: 243-255, 1991.  

C. Capaday and R.B. Stein. The effects of postsynaptic inhibition on the monosynaptic reflex of the cat at different levels of motor activity.  Exp. Brain Res. 77: 577-584, 1989.

C. Capaday and R.B. Stein. Variations of reflex parameters and their implications for the control of movements.  Behav. Brain Sci. 9: 600-601, 1986.

 


 Proprioception and the afferent regulation of movements

C.R. Coffman, C. Capaday and W.G. Darling. Proprioceptive acuity is enhanced during arm movements compared to when the Arm is stationary: A study of young and older adults. Neuroscience. 2021 Apr 24:S0306-4522(21)00205-0. doi: 10.1016/j.neuroscience.2021.04.015, 2021.

W.G. Darling, B. Wall, C. Coffman and C. Capaday. Pointing to one’s moving hand: putative internal models do not contribute to proprioceptive acuity. Front. Human Neurosci. May 15;12:177. doi: 10.3389/fnhum.2018.00177, 2018.

C. Capaday, W.G. Darling, K. Stanek, C. van Vreeswijk. Pointing to oneself: Active versus. passive proprioception revisited and implications for internal models of motor system function. Exp. Brain Res. 229: 171-180, 2013.

C. Capaday and J.D. Cooke. Vibration induced changes in movement related EMG activity in humans.  Exp. Brain Res. 52: 139-156, 1983.

C. Capaday and J.D. Cooke. The effects of muscle vibration on the attainment of final position during voluntary human arm movements.  Exp. Brain Res. 42:  228-230, 1981.

 


Optimization principles in motor control

R.B. Stein, F.W.J. Cody and C. Capaday. The trajectory of human wrist movements. J. Neurophysiol.  59: 1814-1830, 1988.

R.B. Stein, M.N. Oguztoreli and C. Capaday. What is Optimized In Muscular Movements?  In, "Human Muscle Power".  Eds, M.N. McCartney, M.L. Jones, D.G. Sale, A.J. McComas, J.D. McDougal. Human Kinetics Publishers Inc. Illinois, 1986.

 


Electrical engineering

 J. O'Shea, P.A. Clivio and C. Capaday. A Versatile m-computer Based Equipment for Robotic Laboratory Experiments.   In, "Digital  Techniques in Simulation, communication and  Control". Edited, S. Tzafetas. Elsevier Science Publishers  IMACS, 1985.

C. Capaday and J. O'Shea.  Analogue-to-Digital and Digital-to-Analogue 12-BIT Interfaces for Direct Digital Control Using an AIM-65 Microcomputer. Interfaces in Computing. 2: 249-258, 1984.

 


Brain Imaging

P.T. Fox, S. Narayana, N. Tandon, S.P. Fox, H. Sandoval, P. Kochunov, C. Capaday and J. L. Lancaster. Intensity modulation of TMS-induced cortical excitation: Primary Motor Cortex. Human Brain Mapping. 27:478-487, 2006.

C. Capaday, M. Richardson, J.C. Rothwell and D.J. Brooks. Reorganization of motor cortical GABAergic circuits in upper limb amputees: A combined PET radioligand binding and magnetic stimulation study. Exp. Brain Res. 133: 552-556, 2000.

 


Vision research

G. Mandl, N. Desai and C. Capaday. Nitrous Oxide Modifies Visual Responses in the Cat Retina, Striate Cortex, and  Superior Colliculus.  Brain Res. 193: 401-414, 1980.

 


Review articles & book chapters

 

C. Capaday. Corticospinal control of human walking. Chp. 6.3 In, Bioinspired Legged Locomotion: Models, Concepts, Control and Applications.Edited by Sharbafi M, and Seyfarth A., Butterworth-Heinemann, 2017.

A. Prochazka, S. Gosgnach, C. Capaday and H. Geyer. Neuromuscular models for locomotion. In: Bioinspired Legged Locomotion: Models, Concepts, Control and Applications. Edited by Sharbafi M, and Seyfarth A., Butterworth-Heinemann, 2017.

C. Capaday, C. Ethier, C. Van Vreeswijk and W.G. Darling. On the Functional Organization and Operational Principles of Motor Cortical Function. Frontiers in Neural Circuits. doi: 10.3389/fncir.2013.00066, 2013.

C. Capaday. The integrated nature of motor cortical function. The Neuroscientist. In the press, April, 2004.

C. Capaday. The special nature of human walking and its neural control. Trends Neurosci. 25:370-376, 2002.

C. Capaday. Neurophysiological methods for studies of the motor system in freely moving human subjects. J. Neurosci. Meth. 74: 201-218, 1997. 

C. Capaday and B.A. Lavoie.  Studies of presynaptic inhibition in the stretch reflex pathway of the human and the cat. In: "Alpha and gamma motor systems". Editors: A. Taylor, M.H. Gladden., R.D. Durbaba. Plenum Press, London & New York. pp 537-540, 1995.

C. Capaday, B.A. Lavoie and H. Devanne. Cortical and segmental control during voluntary and postural activities in the human and the cat.  IEEE Engineering in Medicine and Biology, Conference proceedings. 17: 1225-1226, 1995.

R.B. Stein, J. Yang, M. Edamura and C. Capaday.  Reflex modulation during normal and pathological human locomotion. In "Neurobiological basis of Human Locomotion". Editors: M. Shimamura, S. Grillner, and V.R. Edgerton. pp. 335-346. Japan Scientific Societies Press, Tokyo, 1991.

R.B. Stein and C. Capaday.  Amélioration des prothèses et aides orthotiques pour les handicapés au moyen de stimulation electrique et enregistrement des signaux bioélectriques. Union Médicale du Canada, Mai-Juin: 102-108, 1990. 

R.B. Stein and C. Capaday. The Modulation of human reflexes during functional motor tasks. Trends in Neurosciences.  11: 328-332, 1988.

 


Donder's law for the human arm

S. Ewart, S.M. Hynes, W.D. Darling and C. Capaday. A Donders’ Like Law for Arm Movements: The Signal not the Noise. Front. Human. Neurosci 10:136. doi: 10.3389/fnhum.2016.00136, 2016.

 


 Home