Beyond the tracked line of sight - Evaluation of the peripheral usable field of view in a simulator setting.

Combining advanced gaze tracking systems with the latest vehicle environment sensors opens up new fields of applications for driver assistance. Gaze tracking enables researchers to determine the location of a fixation, and under consideration of the visual saliency of the scene, to predict visual perception of objects. The perceptual limits, for stimulus identification, found in literature have mostly been determined in laboratory conditions using isolated stimuli, with a fixed gaze point, on a single screen with limited coverage of the field of view.

The effect of glass-ceramic implants on matrix vesicle calcification after two weeks of rat tibial bone healing.

Type, size and distribution of extracellular matrix vesicles (MV), known mediators of primary calcification, were studied around bone-bonding and metal-oxide containing, nonbonding, glass-ceramic implants. This was performed in order to further understand the different effects of implants on bone healing. At 14 days after implantation in adult rat tibial bone the effects of different implants on MV were studied by transmission electron microscopy and computerized morphometry.

Effect of glass-ceramic implants on primary calcification in rat tibial bone after injury.

Using histomorphometry and transmission electron microscopy the distribution of extracellular matrix vesicles around bone-bonding and non-bonding glass-ceramic implants in tibial bone healing was studied. Grouping of vesicles was performed according to type, diameter and distance to the calcified front. Most vesicles were 0.