A 37-year-old man with episodic oscillopsia for 3 months showed intermittent torsional-vertical oscillation of the left eye (video on the Neurology® Web site at www.neurology.org). MRI revealed an attachment between left trochlear nerve and left superior cerebellar artery in the quadrigeminal cistern (figure). Gabapentin 600 mg twice a day ameliorated the ocular oscillation and oscillopsia. Sup...

The echocardiographic features of the enlarged coronary sinus are described in eight patients with a left superior vena cava draining to the coronary sinus and two patients with total anomalous pulmonary venous connection to the coronary sinus. The diagnosis was confirmed in each patient by cardiac catheterization and surgery. On the M-mode echocardiogram, a dense echo was present posterior to ...

Recent attempts at high-resolution sensory-stimulated fMRI performed at 1.5 T have had very limited success at demonstrating a somatotopic organization for individual digits. Our purpose was to determine if functional MRI at 4 T can demonstrate the sensory somatotopic map of the human hand. Sensory functional MRI was performed at 4 T in five normal volunteers using a low-frequency vibratory sti...

Advances in parallel computation are of central importance to Artificial Intelligence due to the significant amount of time and space their programs require. Functional languages have been identified as providing a clear and concise way of programming parallel machines for artificial intelligence tasks. The problems of exporting, creating, and manipulating processes have been thoroughly studied...

The global telecommunications network has seen massive expansion over the last few years. Optical communication through clear atmosphere provides a means for high data rate communication over relatively short distances (e.g. 2km). However, the turbulence in the atmosphere leads to fades of varying depths, some of which may lead to heavy loss of data. Free space optical communication system usin...

A growing body of empirical work has documented the superior performance characteristics of exporting plants and firms relative to non-exporters. Employment, shipments, wages, productivity and capital intensity are all higher at exporters at any given moment. This paper asks whether good firms become exporters or whether exporting improves firm performance. The evidence is quite clear on one po...

A 42-year-old woman was in good health until 2 years before admission. when she began to have right-sided neck pain radiating to the right shoulder. This progressed in severity for 18 months. at which time she began having episodes of spontaneous torticollis accompanied by muscle spasms in her neck and right shoulder. In addition. she experienced infrequent episodes of tingling in her right arm...

Non bacterial thrombotic endocarditis presenting as a stroke is a rare presentation as a result of an underlying occult ovarian clear cell adenocarcinoma. Embolic events secondary to non bacterial thrombotic endocarditis are potentially a life-threatening condition if not diagnosed and treated promptly. High clinical suspicion for an underlying neoplasm is one of the key elements to be consider...