We examined the probability that a displacement during a horizontal saccade of either of 2 points of light would be detected, as a function of direction (up, down, or in the same or opposite direction as the saccade) and as a function of whether the point was the start or the target for the saccade. Vertical displacements are all easier to detect than horizontal; for horizontal movements detect...

Emergency evacuation of patients from a hospital can be challenging in the event fire. Most emergency studies are based on assumption that pedestrians ambulant and egress by themselves. However, this is often not case during evacuations healthcare facilities such as hospitals nursing homes. To investigate facilities, we performed series controlled experiments to study dynamics patient beds hori...

Following earlier work by Mechsner et al. (Nature 414 (2001) 69), the purpose of this experiment was to determine the perceptual and motoric contributions to bimanual coordination. Twenty right-handed, healthy, young adults performed continuous, horizontal, linear movements of both upper limbs at frequencies of 1.5 and 2.0 Hz. The goal was to control the spatial-temporal displacement of two fla...

The finite element method is a useful technique for measuring structural stress and for movement analyses. The objective of this investigation was to get a more accurate estimation of tooth movement depending on application point when a tipping orthodontic force is applied. The three-dimensional model of un upper canine, consisting of 4,000 hexahedron elements with 2,367 nodes was obtained. Hor...

When we fixate our gaze on a stable object, our eyes move continuously with extremely small involuntary and autonomic movements, that even we are unaware of during their occurrence. One of the roles of these fixational eye movements is to prevent the adaptation of the visual system to continuous illumination and inhibit fading of the image. These random, small movements are restricted at long t...

PURPOSE To assess the validity and repeatability of objective compared to subjective contact lens fit analysis. METHODS Thirty-five subjects (aged 22.0±3.0 years) wore two different soft contact lens designs. Four lens fit variables: centration, horizontal lag, post-blink movement in up-gaze and push-up recovery speed were assessed subjectively (four observers) and objectively from slit-lamp ...