ERRATUM: Water hammers tremors during plate convergence

Nlcam modulates midline convergence during anterior neural plate morphogenesis.

During development, different cell types must undergo distinct morphogenetic programs so that tissues develop the right dimensions in the appropriate place. In early eye morphogenesis, retinal progenitor cells (RPCs) move first towards the midline, before turning around to migrate out into the evaginating optic vesicles. Neighbouring forebrain cells, however, converge rapidly and then remain at...

The history of reflex hammers.

Following the simultaneous description of muscle stretch reflexes by Heinrich Erb and Carl Westphal in 1875, neurologists used direct finger taps or chest percussion hammers to elicit these phenomena. Because of inadequacies of chest percussion hammers for eliciting muscle stretch reflexes, a variety of hammers were developed specifically for this purpose. In 1888, J. Madison Taylor, working fo...

Sensing and Cancellation of Tremors in Surgeon’s Hands during Microsurgery

Physiological tremors reduce the precision of surgeons during microsurgery. Active cancellation of tremor will improve the results of microsurgery. It will also lead to the development of more sophisticated surgical procedures, previously considered difficult to perform. Tele-robotic systems, steady-hand robot and Micron active hand-held instrument are currently existing techniques for tremor c...

Erratum

Tremors of the smile.