Journal
PHYSIOLOGY
Volume 35, Issue 1, Pages 31-39Publisher
AMER PHYSIOLOGICAL SOC
DOI: 10.1152/physiol.00026.2019
Keywords
motoneuron; persistent inward currents; input-output function; nonlinear behavior
Categories
Funding
- National Institute of Neurological Disorders and Stroke [NS-089313, NS-098509, NS-110953]
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All movements are generated by the activation of motoneurons, and hence their input-output properties define the final step in processing of all motor commands. A major challenge to understanding this transformation has been the striking nonlinear behavior of motoneurons conferred by the activation of persistent inward currents (PICs) mediated by their voltage-gated Na+ and Ca2+ channels. In this review, we focus on the contribution that these PICs make to motoneuronal discharge and how the nonlinearities they engender impede the construction of a comprehensive model of motor control.
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