Many otherwise puzzling aspects of the way we see brightness, colour, orientation and
motion can be understood in wholly empirical terms. The evidence reviewed here leads to …

Particularly in sports or physical rehabilitation, users have to perform body movements in a
specific manner for the exercises to be most effective. It remains a challenge for experts to …

For reasons not well understood, the color of a surface can appear quite different when
placed in different chromatic surrounds. Here we explore the possibility that these color …

Many researchers use the term “context” loosely to denote diverse kinds of reference points.
The issue is not about terminology but rather about the common conflation of one kind of …

Background: Malpositioning of the acetabular cup during total hip arthroplasty increases the
risk of dislocation, edge-loading, squeaking, early wear, and loosening. We hypothesized …

Visual stimuli that entail the intersection of two or more straight lines elicit a variety of well
known perceptual anomalies. Preeminent among these anomalies are the systematic …

A study is described which examines the drawing accuracy of experts when drawing
foreshortened projections of 3D curves in ecologically-valid conditions. The main result of …

During the last few centuries, natural philosophers, and more recently vision scientists, have
recognized that a fundamental problem in biological vision is that the sources underlying …

Visual illusions fascinate people. What we see? whether consid ered in terms of the
brightness of ob jects, their colors or their arrangement in space? is often at odds with the un …

Any information processing system should allocate resources where it matters: it should
process frequent variable values with higher accuracy than less frequent ones. While this …