?:definition
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1. The maintenance of a pool of neurons (e.g., premotor neurons, motor neurons or preganglionic sympathetic neurons in one or more segments of the spinal cord) in a state of partial or subthreshold excitation; in this state, less afferent stimulation is required to trigger the discharge of impulses. 2. A theory regarding the neurophysiological mechanisms underlying the neuronal activity associated with somatic dysfunction. 3. Facilitation may be due to sustained increase in afferent input, aberrant patterns of afferent input, or changes within the affected neurons themselves or their chemical environment. Once established, facilitation can be sustained by normal central nervous system (CNS) activity.
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