WordNet

move with abrupt, seemingly uncontrolled motions; "The patients legs were jerkings" (同)twitch
(mechanics) the rate of change of acceleration
an abrupt spasmodic movement (同)jerking, jolt, saccade
raising a weight from shoulder height to above the head by straightening the arms
a dull stupid fatuous person (同)dork
throw or toss with a quick motion; "flick a piece of paper across the table"; "jerk his head" (同)flick
meat (especially beef) cut in strips and dried in the sun (同)jerked meat, jerk
involuntary movements of the eyeballs; its presence or absence is used to diagnose a variety of neurological and visual disorders

PrepTutorEJDIC

(急に)『ぐいっと引っぱる』(『押す』,『ねじる』,『投げる』)『こと』 / (筋肉の)反射運動;けいれん / 《米俗》うぶな人;まぬけ / (重量挙げの)ジャーク / 《運動を表す副詞[句]を伴って》…‘を'『急に引っぱる』(『押す』,『ねじる』,『投げる』) / …‘を'ぶっきらぼうに(投げ出すように)言う《+『out』+『名,』+『名』+『out』》 / 『急に』(『ぐいっと』)『動く』
〈特に牛肉〉‘を'細切りにして干し肉にする
がくんがくん(ガタガタ)動く;けいれんする / (話などが)とぎれとぎれの / 《米俗》(人・そのふるまいなどが)ばかな,愚かな,ばかげた
細切りの味付け干し肉

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Adamec I, Nanković S, Zadro I, Hajnšek S, Habek M.SourceDepartment of Neurology, Zagreb School of Medicine and University Hospital Center, Kišpatićeva 12, Zagreb, 10000, Croatia.
Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology.Neurol Sci.2013 Feb 1. [Epub ahead of print]
PMID 23370900

Jerky see-saw nystagmus in internuclear ophthalmoplegia from a lower pontine lesion.

Gong JW, Jiang J, Sun ZH.SourceDepartment of Ophthalmology, Zhejiang Provincial People's Hospital, 158 Shangtang Road, Hangzhou 310014, Zhejiang Province, China.
International journal of ophthalmology.Int J Ophthalmol.2012;5(5):652-4. doi: 10.3980/j.issn.2222-3959.2012.05.24. Epub 2012 Oct 18.
PMID 23166883

Patterns of dissociate torsional-vertical nystagmus in internuclear ophthalmoplegia.

Jeong SH, Kim EK, Lee J, Choi KD, Kim JS.SourceDepartments of Neurology, Seoul National University Bundang Hospital, Seoul, Korea.
Annals of the New York Academy of Sciences.Ann N Y Acad Sci.2011 Sep;1233:271-8. doi: 10.1111/j.1749-6632.2011.06155.x.
To explore the patterns and mechanisms of jerky seesaw nystagmus in internuclear ophthalmoplegia (INO), we analyzed the nystagmus patterns in 33 patients with dissociated torsional-vertical nystagmus and INO. In 11 (33%) patients, the nystagmus was ipsiversive torsional in both eyes with vertical co
PMID 21951004

上地徳昌,丸尾知之,和田隆広,土居俊一
ジョイント・シンポジウム講演論文集 : スポーツ工学シンポジウム : シンポジウム:ヒューマン・ダイナミックス : symposium on sports engineering : symposium on human dynamics 2005, 135-140, 2005-09-10
… When taking the person on the pivot chair, turning, and stopping it suddenly, the jerky nystagmus of tens of seconds called after nystagmus is evoked. … It is known that the duration of this after nystagmus decreases by the rotational training (repetition of the rotational stimulation). …
NAID 110006185600

結縁晃治,赤木博文,土井彰,西崎和則,増田游
Equilibrium research 58(3), 234-237, 1999-06-01
… In most cases, nystagmus develops as a physiological or pathological reflex. … However, cases of voluntary nystagmus have been reported.<BR>A 14-year-old boy complained of several attacks of dizziness with nausea. … He could induce voluntary nystagmus and demonstrated this to us. … Since 9 year of age he has been able to induce nystagmus in frontal gazing. … His nystagmus was pendular jerky. …
NAID 10009387533