| AFORMED | alternating failure of response, mechanical, [to] electrical depolarization |
|---|---|
| AMR | acoustic muscle reflex; activity metabolic rate; acute mitral stenosis; alopecia-mental retardation ... |
| APM | Academy of Parapsychology and Medicine; Academy of Physical Medicine; Academy of Psychosomatic Medic... |
| AXT | alternating exotropia |
| EPI/STAR | echo planar imaging with signal targeting and alternating radiofrequency |
| vestibular nystagmus | Nystagmus resulting from physiological stimuli to the labyrinth that may be rotatory, caloric, compressive, or galvanic, or due to labyrinthal lesions. See: Barany's sign. Synonym: labyrinthine nystagmus. (05 Mar 2000) |
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| voluntary nystagmus | Pendular nystagmus in which the individual causes an extremely fine and rapid horizontal oscillation of the eyes. The nystagamus consists of back-to-back saccades and is seldom done for more than a few seconds at a time. (05 Mar 2000) |
| pendular nystagmus | A nystagmus that, in most positions of gaze, has oscillations equal in speed and amplitude, usually arising from a visual disturbance. (05 Mar 2000) |
| cervical nystagmus | Nystagmus arising from a lesion of the proprioceptive mechanism of the neck. (05 Mar 2000) |
| rotational nystagmus | Jerky nystagmus arising from stimulation of the labyrinth by rotation of the head around any axis and induced by change of motion. (05 Mar 2000) |
| rotatory nystagmus | A movement of the eyes around the visual axis. (05 Mar 2000) |
| miner's nystagmus | Nystagmus occurring in 19th century coal miners and thought at the time to be related to lack of illumination as well as other factors. Synonym: miner's disease. (05 Mar 2000) |
| minimal amplitude nystagmus | Nystagmus of so small an amplitude that it is not detected by the usual clinical tests. Synonym: minimal amplitude nystagmus. Origin: micro-+ G. Nystagmos, a nodding (05 Mar 2000) |
| compressive nystagmus | A jerky nystagmus resulting from unilateral changes of pressure in saemicircular canals. (05 Mar 2000) |
| congenital nystagmus | Nystagmus present at birth or caused by lesions sustained in utero or at the time of birth, inherited nystagmus, usually X-linked, without associated neurologic lesions and nonprogressive; all three patterns of mendelian inheritance may occur: autosomal dominant, autosomal recessive,, the nystagmus associated with albinism, achromatopsia, and hypoplasia of the macula. (05 Mar 2000) |
| conjugate nystagmus | A nystagmus in which the two eyes move simultaneously in the same direction. (05 Mar 2000) |
| convergence-retraction nystagmus | Irregular, jerky nystagmus combining convergence and retraction of the eye into the orbit, especially on attempting an upward gaze. Synonym: Koerber-Salus-Elschnig syndrome. (05 Mar 2000) |
| positional nystagmus | Nystagmus occurring only when the head is in a particular position. (05 Mar 2000) |
| seesaw nystagmus | A nystagmus in which one eye moves upward as the other moves downward, often combined with a torsional rotation (down and out, up and in-as in a see-saw). (05 Mar 2000) |
| nystagmus | <neurology> An involuntary, rapid, rhythmic movement of the eyeball, which may be horizontal, vertical, rotatory or mixed, i.e., of two varieties. Origin: Gr. Nystagmos = drowsiness, from nystazein = to nod (18 Nov 1997) |