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Electrical Properties of Adult Mammalian Motoneurons

Smith, CC; Brownstone, RM; (2022) Electrical Properties of Adult Mammalian Motoneurons. Advances in Neurobiology , 28 pp. 191-232. 10.1007/978-3-031-07167-6_9. Green open access

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Abstract

Motoneurons are the 'final common path' between the central nervous system (that intends, selects, commands, and organises movement) and muscles (that produce the behaviour). Motoneurons are not passive relays, but rather integrate synaptic activity to appropriately tune output (spike trains) and therefore the production of muscle force. In this chapter, we focus on studies of mammalian motoneurons, describing their heterogeneity whilst providing a brief historical account of motoneuron recording techniques. Next, we describe adult motoneurons in terms of their passive, transition, and active (repetitive firing) properties. We then discuss modulation of these properties by somatic (C-boutons) and dendritic (persistent inward currents) mechanisms. Finally, we briefly describe select studies of human motor unit physiology and relate them to findings from animal preparations discussed earlier in the chapter. This interphyletic approach to the study of motoneuron physiology is crucial to progress understanding of how these diverse neurons translate intention into behaviour.

Type: Article
Title: Electrical Properties of Adult Mammalian Motoneurons
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/978-3-031-07167-6_9
Publisher version: https://doi.org/10.1007/978-3-031-07167-6_9
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: C-boutons, Modulation, Persistent inward currents, Repetitive firing, Spike frequency adaptation, Adult, Animals, Humans, Mammals, Motor Neurons, Muscles
UCL classification: UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Department of Neuromuscular Diseases
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
URI: https://discovery.ucl.ac.uk/id/eprint/10157899
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