In order to understand how the brain prepares for and executes a switch in task demand, we measured reaction time (RT), accuracy, and event-related brain potentials associated with performance in single and mixed-task blocks using a cued design. Our results show that trials which repeat in a mixed-task block (repeat trials) were more demanding than trials which repeated in a single-task block, ...

A task set may need to be inhibited to facilitate the switch to another task. This event-related potential (ERP) study determined (1) whether backward inhibition (BI) is exerted preferentially in high interference environments, and (2) whether ERPs locked to critical time points reflect BI during cue preparation and/or response stages. High interference (HI) and low interference (LI) were creat...

The pandemic has dramatically changed the reality not only for certain countries but whole world: frightened by virus, people got locked at homes, countries, and companies started working online. Nowadays, due to economic crisis resulted from corona new opportunities have emerged society imposed requirements creativity, in particular, doctors scientists are demanded discover Covid-19 vaccine, w...

The NHS in Wales has moved closer to adopting a privately developed, online health records system designed to put patients in control of their personal information and care. The system, called Patients Know Best, has been awarded a national framework contract by the Welsh government. It allows patients with smartphones and other devices to organise their personal records in an internet based ac...

Over the past decade, Phase-Locked Loops (PLLs) have become an integral part of the modern ASIC design. PLLs provide the clocks that sequence the operation of the various blocks on an ASIC chip as well as synthesize their communications. There are various types of PLLs targeting specific applications. Clock generator PLLs are capable of large frequency multiplication. They are primarily used to...

Superior dislocation of the patella is a rare cause of knee locking, with fewer than 20 cases reported in the English literature. The vast majority of traumatic or even atraumatic knee locking cases are due to such varied conditions as meniscal tears, osteochondral lesions, osteoarthritis, and ligamentous tears. A careful examination with proper radiographic imaging must be undertaken to proper...

The locked-in syndrome is caused by an insult to the ventral pons, most commonly an infarct, haemorrhage, or trauma. The characteristics of the syndrome are quadriplegia and anarthria with preservation of consciousness. Patients retain vertical eye movement, facilitating non-verbal communication. Ten year survival rates as high as 80% have been reported. Even limited physical recovery can impro...

An acutely locked knee is a painful and debilitating orthopaedic condition usually caused by a loose body or bucket-handle meniscal tear that requires surgery to remove or repair. We describe 2 cases of acute locking of the knee that occurred during pregnancy. Both patients underwent urgent arthroscopic treatment under spinal anesthesia without complication to the patient or fetus. Concerns reg...

It frequently occurs that a biological assembly in a crystallographic asymmetric unit has more than one noncrystallographic symmetry operator. For instance, a tetramer might have the point group 222 or a spherical virus will have the point group 532. A self-rotation function searches for the direction and angle of rotation of the individual noncrystallographic symmetry operations, while a cross...