Measurements of eye movements have shown that centrifugal movements (i.e. away from the primary position) have a lower maximum velocity and a longer duration than centripetal movements (i.e. toward the primary position) of the same size. In 1988 Pelisson proposed that these kinematic differences might be caused by differences in the neural command signals, oculomotor mechanics or a combination ...

Oculomotor palsy is a mononeuropathy, which causes sudden unilateral ptosis and double vision. It often affects older people who have concurrent diabetes and/or hypertension. Oculomotor palsy generally resolves over three to four months as regeneration of affected nerve fibres. there is no effective biomedical treatment. In this report, I present a 76-yearold man who experienced left-sided ocul...

In 1942, Szentagothai showed by means of a modified Horsley-Clarke stereotaxic in­ strument, and a technique of direct stimu­ lation of the oculomotor nerve nucleus that the representation of the striated ocular muscles within this nucleus for the cat and Pose· Com m. Fig. 1 (Danis). Functional organization of the third-nerve nucleus of the cat and the dog according to Szentagothai. the dog is ...

background: neurotologic signs and symptoms, especially vestibular symptoms are common in migrainous patients. involvement of the visual system in migrainures has received a great deal of attention in recent years, but the oculomotor part of the visual system has been largely ignored. the goal of this study was to investigate some parts of the central vestibular system using the oculomotor part...

ataxia oculomotor apraxia1(aoa1) is the most frequent cause of autosomal-recessive cerebellar ataxia in japan,but it is reported from all of the world. the presentation is nearly identical to that of at without the non-neurological features,and accounts for up to 10% of autosomal-recessive cerebellar ataxias.gait imbalance and dysarthria are typical presenting features,oculomotor apraxia typica...

A 40-year-old woman was admitted to our hospital because of double vision combined with left ptosis. Although at 25 years of age she had already been diagnosed with limb weakness associated with chronic inflammatory demyelinating polyneuropathy (CIDP), she had never experienced double vision until her latest condition. Neurological examination revealed left oculomotor palsy without other crania...

A 63-year-old woman presented with an extremely rare oculomotor schwannoma not associated with neurofibromatosis, manifesting as a transient diplopia and ptosis. Magnetic resonance images showed a well-enhanced mass extending from the cavernous sinus to the intraorbital region. Surgical exposure confirmed the tumor originating from the oculomotor nerve in the cavernous sinus. The intraorbital c...

The function of the vestibulo-ocular reflex, commonly known as the VOR, is to stabilise an image on the surface of the retina during head movement. One of the parts of the brain involved in this reflex is the flocculus in the cerebellum, which integrates information from multiple sources, including the vestibular apparatus in the labyrinth of the middle ear, motion detectors in visual cortex, a...

It is well established that ongoing cognitive functions affect the trajectories of limb movements mediated by corticospinal circuits, suggesting an interaction between cognition and motor action. Although there are also many demonstrations that decision formation is reflected in the ongoing neural activity in oculomotor brain circuits, it is not known whether the decision-related activity in th...