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Converging Clinical and Engineering Research on Neurorehabilitation II pp 59–63Cite as

Operant Conditioning of the Human Soleus Short Latency Stretch Reflex and Implications for the Medium Latency Soleus Stretch Reflex

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Part of the book series: Biosystems & Biorobotics ((BIOSYSROB,volume 15))

Abstract

The human soleus stretch reflex is comprised of several components with different latencies typically termed the SLR, MLR and in some cases LLR component. The SLR is suggested to be mediated by Gr Ia afferent arising from activation of spindle afferents, the MLR is predominantly due to gr Ib and II feedback while LLR likely contains a cortical component. Here we report data on the changes in both the SLR and MLR following a well-established conditioning protocol. Participants attended 30 sessions where the initial six served as a baseline measure of reflex size and the following 24 sessions were devoted to training the participants to either increase or decrease the SLR component. Following successful up-conditioning of the SLR, the MLR remained unchanged. However the SLR and MLR both decreased with down-conditioning. This suggests that the MLR is not exclusively Gr Ib or II based but has some Ia afferent input.

This study was funded by a grant from Det Obelske Familiefond.

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References

  1. J.R. Wolpaw, J.S. Carp, Plasticity from muscle to brain. Prog. Neurobiol. 78, 233–263 (2006)

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Acknowledgments

This goes to all the subjects and Dr. A. Thompson for ongoing feedback on the progress of the training.

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Authors and Affiliations

  1. Department of Health Science and Technology, Center for Sensory-Motor Interaction (SMI), Aalborg University, Aalborg, Denmark

    Natalie Mrachacz-Kersting & Uwe G. Kersting

Authors
  1. Natalie Mrachacz-Kersting
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  2. Uwe G. Kersting
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Corresponding author

Correspondence to Natalie Mrachacz-Kersting .

Editor information

Editors and Affiliations

  1. Cajal Institute, Spanish National Research Council Cajal Institute, Madrid, Spain

    Jaime Ibáñez

  2. Cajal Institute, Spanish National Research Council Cajal Institute, Madrid, Spain

    José González-Vargas

  3. Avda. de la Universidad s/n, Universidad Miguel Hernández de Elche Avda. de la Universidad s/n, Elche, Spain

    José María Azorín

  4. Cullen College of Engineering, University of Houston Cullen College of Engineering, Houston, USA

    Metin Akay

  5. Cajal Institute, Spanish National Research Council Cajal Institute, Madrid, Spain

    José Luis Pons

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Mrachacz-Kersting, N., Kersting, U.G. (2017). Operant Conditioning of the Human Soleus Short Latency Stretch Reflex and Implications for the Medium Latency Soleus Stretch Reflex. In: Ibáñez, J., González-Vargas, J., Azorín, J., Akay, M., Pons, J. (eds) Converging Clinical and Engineering Research on Neurorehabilitation II. Biosystems & Biorobotics, vol 15. Springer, Cham. https://doi.org/10.1007/978-3-319-46669-9_11

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  • DOI: https://doi.org/10.1007/978-3-319-46669-9_11

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-46668-2

  • Online ISBN: 978-3-319-46669-9

  • eBook Packages: EngineeringEngineering (R0)

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