NOVEL - Robert B. Daroff Collection
 
Filters: Collection: "ehsl_novel_rbd"
1 - 25 of 54
Number of results to display per page
TitleDescriptionType
1 Alexander's LawThis describes the observed increase in vestibular nystagmus with gaze in the direction of the fast phase, and its decrease with gaze in the slow phase direction.Image/MovingImage
2 Anatomy and Physiology of NystagmusThe role of the cerebellum in modifying the output of the neural integrator is discussed. Impaired integration causes jerk nystagmus with increasing or decreasing velocity exponential slow phases.Image/MovingImage
3 Bilateral Horizontal Gaze PalsyA patient with a bilateral PPRF lesion displays intact vertical gaze and convergence.Image/MovingImage
4 Bilateral Internulcear OphthalmoplegiaA woman with a bilateral INO demonstrates impaired adduction and nystagmus of the abducting eyes. Her vertical gaze is intact. The dissociated optokinetic nystagmus, due to an inability of the medial recti to generate normal saccades, is again shown.Image/MovingImage
5 Brain Stem Eye Movement SyndromesIn this series, the importance of the brainstem in eye movements is discussed, with particular emphasis is placed on the signficance of the paramedian pontine reticular formation (PPRF), the medial longitudinal fasciculus (MLF), and the nuclei and projections of cranial nerves III and VI. Correlat...Image/MovingImage
6 Classifications of Internuclear OphthalmoplegiaBoth the Lutz and Cogan classifications of INO separate them into anterior and posterior varieties. The Cogan classification, which depends upon the presence or absence of convergence, is not particularly useful for localization. The Lutz posterior INO, which is a supranuclear pareses of abduction, ...Image/MovingImage
7 Defective PursuitA patient with a cerebral hemispherectomy manifests ipsilateral low-gain (saccadic) pursuit, and impaired optokinetic nystagmus when the targets are moved towards the lesioned side. The multiple causes of pursuit abnormalities are discussed.Image/MovingImage
8 Defective Saccades: Frontal Lobe LesionA patient with a right frontal lobe infarction demonstrates loss of saccades to the left with preservation of pursuit.Image/MovingImage
9 Defective Saccades: Slow to No SaccadesIn this video, the many causes of this syndrome are listed, and a patient demonstrates the consequence of being unable to generate saccadic eye movements. On cold caloric stimulation, his eyes deviate tonically to the side of the stimulation without fast phases to the opposite side.Image/MovingImage
10 Downbeat NystagmusPrimary position downbeat nystagmus is demonstrated, with a list of the common causes.Image/MovingImage
11 Eye Movement Modeling; Eye-Ear TricksA surgical resident was able to combine eye and ear movements as a party trick, to intimidate a first year neurology resident.Image/MovingImage
12 Gaze Evoked Ear RetractionLarge ears normally retract during ipsilateral gaze, as shown in this segment. However, it won't be noted unless you look for it. "You see what you look for, and you look for what you know."Image/MovingImage
13 Horizontal Eye MovementsThe anatomic pathway involved in horizontal saccadic eye movements include the frontal eye fields, paramedian pontine reticular formation (PPRF), medial longitudinal fasciculus (MLF), and cranial nerve nuclei III and VI. The pathway for the vestibulo- ocular reflex (VOR) passes through the PPRF at ...Image/MovingImage
14 Internuclear OphthalmoplegiaLesions of the MLF cause an INO, which manifests as ipsilateral palsies of adduction, and nystagmus of the contralateral abducted eye. Vertical gaze is preserved. Inducing optokinetic nystagmus so that the adducting eye is responsible for the fast phase, causes a dissociation between the two eyes, a...Image/MovingImage
15 Macro Square Wave JerksA woman with multiple sclerosis has a postural tremor and macro square wave jerks. These indicate a cerebellar outflow problem. Macro square wave jerks are somewhat of a misnomer since the eye movements are not entirely square; an alternate descriptor is "square wave pulses."Image/MovingImage
16 Normal Vertical Eye MovementsThe brain stem pathway for vertical saccades involves the PPRF, rostral interstitial nucleus of the medial longitudinal fasciculus (riMLF), nucleus of Cajal, and the nuclei of cranial nerves III and IV. For upgaze, projections from the riMLF traverse through the posterior commissure, whereas there ...Image/MovingImage
17 Ocular DysmetriaUpon attempted refixation, patients with this cerebellar eye sign over-shoot and oscillate, before eventually reaching their intended targets. Two patients demonstrate this disorder.Image/MovingImage
18 Ocular FlutterOcular Flutter, a disorder characterized by intermittent, rapid, horizontal movements in primary position, is demonstrated in this video.Image/MovingImage
19 Ocular Myasthenia GravisA man with limited ocular excursions and only small amplitude saccades, improves with Tensilon, this illustrates the need to always consider ocular myasthenia in the differential diagnosis in patients with limited eye movements. Rapid restricted saccades, as this patient demonstrates, are diagnosti...Image/MovingImage
20 Ocular Palatal MyoclonusThe relevant anatomy of this disorder involves the inferior olivary nucleus, projecting via the restiform body to the contralateral dentate nucleus, traveling to the contralateral red nucleus via the superior cerebellar peduncle, and finally back to the inferior olivary nucleus via the central tegme...Image/MovingImage
21 One and Half SyndromeThis involves both gaze palsy secondary to a lesion of the ipsilateral PPRF or VI nucleus, and an INO secondary to a lesion of the MLF on the same side. If the VI nucleus is involved, VII palsy almost always occurs due to the proximity of the VII fascicle to the VI nucleus.Image/MovingImage
22 OpsoclonusThe differential diagnosis in adults is presented, followed by probably the most dramatic example of this disorder ever filmed. The father of American Neuro-ophthalmology, Dr. Frank Walsh, gave a copy of the film to Dr. J. Lawton Smith who, in turn, gave a copy to me.Image/MovingImage
23 Opsoclonus in an InfantAn infant with Infantile Opsoclonus-Myoclonus ("Dancing Eyes, Dancing Feet"), with a likely underlying neuroblastoma is shown and the differential diagnosis of opsoclonus in infants and children is listed.Image/MovingImage
24 Pause Cell Dysfunction: Ocular FlutterBurst neurons are tonically inhibited by the pause neurons, which lie in the nucleus raphe interpositus. Lesions of the pause neurons result in ocular flutter.Image/MovingImage
25 Pause Cell DysfunctionsThis reviews the ocular oscillations caused by pause cell dysfunctions.Image/MovingImage
1 - 25 of 54