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User:Michael Grey

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I am Michael J Grey, am an Associate Professor at the Institute of Exercise and Sport Sciences , Faculty of Science & Department of Medical Physiology, Faculty of Health Sciences at the University of Copenhagen. My professional webpage resides here.

I am a physiologist with specialisations in neuroscience and biomechanics. My primary research interest is the study of human locomotion and its neurorehabilitation. In particular, I study the mechanisms by which sensory feedback and supraspinal structures contribute to the control of human walking. I have a strong interest in the neurorehabilitation of walking following stroke or spinal cord injury using therapeutic functional electrical stimulation, and in the assessment of cortical plasticity using transcranial magnetic stimulation and functional magnetic resonance imaging. Please visit my research page for more detailed information about ongoing projects.

Specialisations

Neuroscience

Biomechanics

Publications

Grey MJ, Klinge K, Crone C, Lorentzen J, Biering-Sørensen F, Ravnborg M & Nielsen JB (2007) Post-activation depression of soleus stretch reflexes in healthy subjects and spastic patients. Exp Brain Res, DOI:10.1007/s00221-007-1142-6. (abstract)

Mazzaro N, Grey MJ, Nielsen JF & Sinkjær T. (2007) Decreased contribution from afferent feedback to the soleus muscle during walking in patients with spastic stroke. J Stroke Cereb Dis 16:135-144. (abstract)

Grey M.J., Nielsen J.B., Mazzaro N. & Sinkjaer T. (2007) Positive force feedback in human walking. Journal of Physiology, 581:99-105. (abstract)

Larsen B, Voigt M & Grey MJ (2006) Changes in the soleus stretch reflex at different pedaling frequencies and crank loads during pedaling. Motor Control, 10, 265-279. (abstract)

Mazzaro N, Grey MJ, do Nasciemento O, Sinkjaer T. (2006) Afferent mediated modulation of the soleus muscle activity during the stance phase of human walking. Experimental Brain Research, 173, 713-723. (abstract)

Mazzaro N, Nielsen JF, Grey MJ & Sinkjær T (2006) Is muscle afferent contribution to the soleus muscle activity decreased during human spastic walking? University College London December 2005 Proceedings of the Physiological Society 1, C14. (abstract)

Zuur AT, Nielsen JB, Sinkjær T & Grey MJ (2006) Excitability of inhibitory neurons in the human motor cortex during static and dynamic contractions. University College London December 2005 Proceedings of the Physiological Society 1, PC8. (abstract)

Mrachacz-Kersting N, Grey MJ & Sinkjær T (2006) Evidence for a transcortical contribution to the human quadriceps stretch reflex. Experimental Brain Research 168, 529-540. (abstract)

Ishikawa M, Komi PV, Grey MJ, Lepola V, Bruggemann GP. (2005) Muscle-tendon interaction and elastic energy usage in human walking. Journal of Applied Physiology 99, 603-8. (abstract)

Mazzaro N, Grey MJ, Andersen JB, Sinkjaer T & Schieppati, M (2005) Lack of on-going adaptations in the soleus muscle activity during walking patients affected by large-fiber neuropathy. Journal of Neurophysiology 93, 3075-85. (abstract)

Mazzaro N, Grey MJ & Sinkjær T (2005) Contribution of afferent feedback to the soleus muscle activity during human locomotion. Journal of Neurophysiology 93, 167-177. (abstract)

Grey MJ Mazzaro N, Nielsen JB & Sinkjær T (2004) Ankle extensor proprioceptors contribute to the enhancement of the soleus EMG during the stance phase of human walking. Canadian Journal of Physiology and Pharmacology 82, 610-616. (abstract)

Grey MJ, Larsen B & Sinkjær T (2002) A task dependent change in the medium latency component of the soleus stretch reflex. Experimental Brain Research 145, 316-322. (abstract)

Grey MJ, Van Doornik J & Sinkjær T (2002) Plantar flexor stretch reflex responses to whole body loading/unloading during human walking. European Journal of Neuroscience 16, 2001-2007. (abstract)

Grey MJ, Ladouceur M, Andersen JB, Nielsen JB & Sinkjær T (2001) Group II muscle afferents probably contribute to the medium latency stretch reflex during walking in humans. Journal of Physiology 534, 925-933. (abstract)

Grey MJ, Pierce CWP, Milner TE & Sinkjær T (2001) Soleus stretch reflex during cycling. Motor Control 1, 36-49. (abstract)




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