Medial medullary infarction: abnormal ocular motor findings.
In 20 consecutive patients with isolated medial medullary infarction, abnormal ocular motor findings included nystagmus (n = 8), ocular contrapulsion (n = 5), and contralesional ocular tilt reaction (n = 2). The nystagmus was ipsilesional (n = 4), gaze-evoked (n = 5), upbeating (n = 4), and hemiseesaw (n = 1). The ocular motor abnormalities may be explained by involvements of the nucleus prepositus hypoglossi, medial longitudinal fasciculus or efferent fibers from the vestibular nuclei, climbing fibers, and cells of the paramedian tracts.
Kim
J Soo
JS
Department of Neurology, College of Medicine, Seoul National University, Seoul, Korea. jisookim@snu.ac.kr
Choi
K-D
KD
Oh
S-Y
SY
Park
S-H
SH
Han
M-K
MK
Yoon
B-W
BW
Roh
J-K
JK
D000328:Adult; D000368:Aged; D020526:Brain Stem Infarctions / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology*; D002531:Cerebellum / Q000503:physiopathology; D005133:Eye Movements / Q000502:physiology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008526:Medulla Oblongata / Q000098:blood supply / Q000473:pathology / Q000503:physiopathology*; D008875:Middle Aged; D009434:Neural Pathways / Q000098:blood supply / Q000473:pathology / Q000503:physiopathology; D009759:Nystagmus, Pathologic / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D015835:Ocular Motility Disorders / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology*; D009801:Oculomotor Muscles / Q000294:innervation / Q000503:physiopathology; D009847:Olivary Nucleus / Q000098:blood supply / Q000473:pathology / Q000503:physiopathology; D014711:Vertebral Artery / Q000033:anatomy & histology / Q000503:physiopathology; D014726:Vestibular Nuclei / Q000098:blood supply / Q000473:pathology / Q000503:physiopathology