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| Neuroscience
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Richard
E. Poppele, Ph.D.
Professor, Department of Neuroscience
dick@umn.edu |
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 Neurophysiology
of sensory-motor functions.
We study sensory-motor integration by analyzing the neural representations
of proprioceptive sensory information in the spinal cord and cerebellum.
Our experimental approach involves the use of multiregression analysis
of single neuron activity with respect to a variety of limb parameters
during imposed and self-initiated movements of the cat hindlimb.
Our results show that both limb mechanics and polysynaptic circuitry
in the spinal cord play important roles in generating complex signals
that encode the position and movement of the hindlimb in terms of
whole-limb geometric variables, such as limb axis length and orientation,
rather than as descriptors of individual joint angles or specific
muscle states. |
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Selected Publications |
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Cappellini G, Ivanenko YP, Poppele RE, Lacquaniti F. (2006). “Motor Patterns in Human Walking and Running” Journal of Neurophysiology 95: 3426-3437. |
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Ivanenko YP, Poppele RE, Lacquaniti F. (2006). “Spinal Cord Maps of Spatiotemporal Alpha-Motoneuron Activation in Humans Walking at Different Speeds .” Journal of Neurophysiology 95(2):602-18.
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Bosco, G., Eian, J. and Poppele, RE (2005). “Kinematic and Non-Kinematic Signals Transmitted to the Cat Cerebellum during Passive Treadmill Stepping” Experimental Brain Research 167(3) : 394-403 . |
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Ivanenko YP, Poppele RE, Lacquaniti F
Five basic muscle activation patterns account for muscle activity during human locomotion.
J Physiol. 2004 556:267-282 |
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