| relative afferent pupillary defect | An asymmetry of the pupillomotor input between the two eyes; tested by alternating the light from one eye to the other and comparing the direct light reactions. (05 Mar 2000) |
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| special somatic afferent column | A column of gray matter in the hindbrain of the embryo, represented in the adult by the nuclei of the auditory and vestibular nerves. (05 Mar 2000) |
| nerve, afferent | A nerve that carries impulses toward the central nervous system. The word afferent hails from the latin ad , toward + ferre , to bear = to carry toward. (12 Dec 1998) |
| neurons, afferent | Neurons which convey sensory information centrally from the periphery. (12 Dec 1998) |