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Optimal feedback control and the long-latency stretch response
Umeå University, Faculty of Medicine, Department of Integrative Medical Biology (IMB), Physiology. Queen’s University, Kingston.
Queen’s University, Kingston.
2012 (English)In: Experimental Brain Research, ISSN 0014-4819, E-ISSN 1432-1106, Vol. 218, no 3, 341-359 p.Article, review/survey (Refereed) Published
Abstract [en]

There has traditionally been a separation between voluntary control processes and the fast feedback responses which follow mechanical perturbations (i.e., stretch "reflexes"). However, a recent theory of motor control, based on optimal control, suggests that voluntary motor behavior involves the sophisticated manipulation of sensory feedback. We have recently proposed that one implication of this theory is that the long-latency stretch "reflex", like voluntary control, should support a rich assortment of behaviors because these two processes are intimately linked through shared neural circuitry including primary motor cortex. In this review, we first describe the basic principles of optimal feedback control related to voluntary motor behavior. We then explore the functional properties of upper-limb stretch responses, with a focus on how the sophistication of the long-latency stretch response rivals voluntary control. And last, we describe the neural circuitry that underlies the long-latency stretch response and detail the evidence that primary motor cortex participates in sophisticated feedback responses to mechanical perturbations.

Place, publisher, year, edition, pages
2012. Vol. 218, no 3, 341-359 p.
Keyword [en]
Reflex, Optimal feedback control, Long-latency, Motor cortex, Stretch response
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:umu:diva-55303DOI: 10.1007/s00221-012-3041-8ISI: 000302754500001OAI: oai:DiVA.org:umu-55303DiVA: diva2:527317
Available from: 2012-05-19 Created: 2012-05-14 Last updated: 2017-12-07Bibliographically approved

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Pruszynski, J. Andrew

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