The neuronal correlates of handedness are still poorly understood. Here we used event-related functional magnetic resonance imaging to investigate the impact of handedness on neuronal activation of the primary sensorimotor cortex, supplementary motor area and dorsal premotor cortex during simple unilateral and bilateral finger movements. In 16 right-handed and 16 left-handed individuals, we map...

abstract   introduction: inflammation and wear debris may be responsible for bone lysis and subsequent lost in aseptic arthroplasty. prostaglandin e2, platelet activating factor, and histamine are important mediators of inflammatory cells. we studied histopathological changes of cement-bone interface after using specific antagonists of these mediators.   methods: left and right tibiae of 120 ra...

a case of bilateral intraosseous tumor of the calcaneus with different mri imaging is presented. on the left, radiological findings suggest intraosseous lipoma, but on the right-sided lesion, imaging studies were not convincing. the microscopic report showed foreign body granulomatous reaction, a rare clinical pathological discordant.

the right ventricle (rv) is a complex structure with abstruse function that reveals important differences when compared to the left ventricle (lv), so it cannot be described as a simple geometric form and achromatic physiology. as an inference from this fact, in the present review, we aim to describe rv structure including the embryology, anatomy, and physiology and present a functional, hemody...

  Abstract   Introduction: Inflammation and wear debris may be responsible for bone lysis   and subsequent lost in aseptic arthroplasty. Prostaglandin E2, platelet activating factor,   and histamine are important mediators of inflammatory cells. We studied   histopathological changes of cement-bone interface after using specific antagonists   of these mediators.   Methods: Left and right tibiae...

A 47 year old male was admitted in a comatose state. CT scan showed a haemorrhage in the right pulvinar thalamus descending into the right part of the lamina quadrigemina. He presented with anisocoria, prompt bilateral pupillary light reaction, and unilateral convergence paralysis contralateral to the lesion in combination with upward gaze palsy. During an observation period of two months, the ...

Validity of using reaction time as a basis for determining motor laterality To the Editor: In a recent letter to the editor, Dr. Derakhshan (2006) responded to a study conducted by Gonzalez and colleagues (2006a) that explored a potential hemispheric specialization for the visual control of action independent of subject handedness. In his letter, Dr. Derakshan suggested that an important variab...

purpose: to report the first case of concomitant optic nerve transection and chorioretinitis sclopetaria patient and findings: a 12-year-old boy with history of bb gun injury to his right eye was referred for loss of vision 8 months after the accident. visual acuity in the right eye was counting fingers at one meter with 3+ rapd. on slit lamp examination, right eye seemed normal except 1+ anter...

Previous studies have suggested that the left and right hands have different specialties for motor control that can be represented as two agents in the brain. This study examined how coordinated movements are performed during bimanual reaching tasks to highlight differences in the characteristics of the hands. We examined motor movement accuracy, reaction time, and movement time in right-handed...