from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Carrying inward to a central organ or section, as nerves that conduct impulses from the periphery of the body to the brain or spinal cord.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Carrying towards.
- n. An afferent structure or connection
from the GNU version of the Collaborative International Dictionary of English
- adj. Bearing or conducting inwards to a part or organ; -- opposed to
from The Century Dictionary and Cyclopedia
- Bringing; carrying to or toward; conveying inward.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. of nerves and nerve impulses; conveying sensory information from the sense organs to the CNS
- n. a nerve that passes impulses from receptors toward or to the central nervous system
Thus: a given inhibitory tetanus exerted on a certain set of motoneurones fails to prevent their excitation in response to strong stimulation of a given afferent nerve; but when the stimulation of the excitatory afferent is weaker the given standard inhibitory tetanus does prevent the response of the motor neurones to the excitatory stimulation.
The fibres which come ultimately from the dorsal aspect of the spinal marrow are those which carry inwards the effect of a stimulus applied towards their ultimate termination, and are therefore called afferent, or sensory.
According to their function, the former set have been called afferent, as conveying impressions towards the centre; the latter efferent, as conveying the respondent movement from the centre.
Title: A novel role for TRPM8 in visceral afferent function
The autonomic nervous system is divided into interacting and balancing systems, the sympathetic and parasympathetic nervous systems and the visceral afferent system.
A feedback network of nerves, known as the visceral afferent system, allows the brain to carefully monitor the effects this stimulation has on critical parts of the body.
Whatever the specifics, they wrote, the important thing is that the stimulation affected only “a few cubic millimeters of neural tissue,” which means that “the depression probably resulted from the stimulation of afferent, efferent, or passing fibers within the substantia nigra or from the inhibition of those fibers.”
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