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TitleDescriptionSubject
1 Change in Pendular Nystagmus from Oculopalatal Tremor over a Four-year PeriodThis is a patient who developed oculopalatal tremor months following a pontine hemorrhage. Although it is not shown here, she also has palatal tremor. In the first video which was taken 1 year after her hemorrhage, a vertical-torsional pendular nystagmus can be seen, that is mildly dissociated giv...
2 Eye Closure and Oculopalatal Tremor𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This patient suffered a traumatic brain injury with brainstem injury resulting in damage to Mollaret's triangle and palatal tremor. Inferior olivary hypertrophy was noted on her MRI, although no vertical and/or torsional ...Pendular Nystagmus; Oculopalatal Tremor
3 Oculopalatal Tremor and Internuclear Ophthalmoplegia Due to Hemorrhagic Pontine Cavernoma𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 60-year-old woman who experienced 2 episodes of vertigo, nausea and vomiting, which was felt to be related to recurrent hemorrhage of a pontine cavernoma that was adjacent to the fourth ventricle. The cavernoma ...Pendular Nystagmus; Oculopalatal Tremor; INO; Pons OMS; Seventh Facial Nerve
4 Oculopalatal Tremor and One-and-a-Half Syndrome Due to Pontine Hemorrhage𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 65-year-old man who was put on a blood thinner, and shortly thereafter experienced a midline pontine hemorrhage, which was more dense on the left side. Immediately afterwards, right hemiparesis and hemi-anesthes...Pendular Nystagmus; Oculopalatal Tremor; INO; One-and-a-Half; Pons OMS; Seventh Facial Nerve; Sixth Abducens Nerve
5 Oculopalatal Tremor with Prominent Nystagmus, Bilateral Horizontal Gaze Palsy, and Bilateral Facial Palsies𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 50-year-old woman who experienced the acute onset of right sixth and seventh nerve palsies and left hemiparesis. Two cavernomas within the right pons (one in the region of the facial colliculus) were demonstrat...Abnormal Range; Sixth Nerve Palsy; Facial Nerve; Horizontal Gaze Palsy; OMS Pons; Pendular Nystagmus; Oculopalatal
6 Oculopalatal Tremor with Prominent Nystagmus, Bilateral Horizontal Gaze Palsy, and Bilateral Facial Palsies (Figure 1)Figure 1, MRI T2 sequence demonstrating hyperintensities involving bilateral inferior olives of the medulla. This is a 50-year-old woman who experienced the acute onset of right sixth and seventh nerve palsies and left hemiparesis. Two cavernomas within the right pons (one in the region of the facia...Abnormal Range; Sixth Nerve Palsy; Facial Nerve; Horizontal Gaze Palsy; OMS Pons; Pendular Nystagmus; Oculopalatal
7 Palato-ocular Synchrony in Oculopalatal TremorThis is a patient with OPT due to a pontine hemorrhage, and although she did have torsional pendular nystagmus, it was very subtle. However, with eyelid closure, much larger vertical ocular oscillations could be seen, which were in fact synchronous with her palatal tremor. This finding, sometimes ...
8 Pons: 6th and 7th Nerve Anatomy and the Central Segmental TractFrom this cross-section of the pons, the proximity of the 6th nucleus to the 7th nerve fascicles is apparent. This is the basis of the so-called facial colliculus syndrome, where an ipsilesional horizontal gaze palsy from a nuclear 6th lesion (usually related to stroke or demyelination) can be seen ...Sixth Nerve Palsy; Inter Nuclear Ophthalmoplegia; INO; One-and-a-Half; Horizontal Gaze Palsy; OMS Pons; Facial Nerve; Oculopalatal
9 Pontine Hemorrhage Causing Oculopalatal Tremor and Multiple Cranial NeuropathiesThis is a 45-yo-woman who had a dorsal pontine cavernoma that bled 2 years prior to this video. Symptoms included diplopia and oscillopsia. On examination, she had left>right facial palsies (upper and lower face from involvement of the nucleus/fascicle - i.e., lower motor neuron palsies) and sixth n...Sixth Nerve Palsy; Pons; Pendular Nystagmus; Oculopalatal Tremor
10 Sequelae of Cerebellar Hemorrhage - Gaze-evoked Nystagmus, Alternating Skew Deviation and Palatal TremorThis is a 75-yo-woman presenting with a gait disorder. Two years prior, she suffered a cerebellar hemorrhage. On examination, there were typical cerebellar ocular motor signs including gaze-evoked nystagmus, choppy smooth pursuit and VOR suppression, and saccadic dysmetria. There was also an alterna...Assessing Abnormal Alignment; Jerk Nystagmus; Gaze Evoked Nystagmus; Oculopalatal Myoclonus
11 Subtle Torsional Pendular Nystagmus in Oculopalatal Tremor (OPT)𝗢𝗿𝗶𝗴𝗶𝗻𝗮𝗹 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻: This is a 50-year-old woman who presented with imbalance, and MRI demonstrated a right cerebellar cavernous malformation. She underwent surgery to resect the malformation, and post-operatively experienced right hemiparesi...Pendular Nystagmus; Oculopalatal Tremor
12 Subtle Torsional Pendular Nystagmus in Oculopalatal Tremor (OPT) (Figure 1)This is a 50-year-old woman who presented with imbalance, and MRI demonstrated a right cerebellar cavernous malformation. She underwent surgery to resect the malformation, and post-operatively experienced right hemiparesis and ataxia. Six months after the surgery, balance worsened and vision became ...Pendular Nystagmus; Oculopalatal Tremor
13 Triangle of Guillain-MollaretSeen here is a schematic representation of the Gullain-Mollaret triangle (Figure 1), also referred to as the dentato-olivary pathway, reflecting the 3 points of this imaginary triangle - 1) dentate nucleus, 2) red nucleus, and 3) inferior olivary nucleus. The olive sends decussating climbing fibers ...Pendular Nystagmus; Oculopalatal Tremor
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