A test of kinaesthetic sensitivity to passive movements of the upper limbs was constructed consisting of two tasks: position and movement discrimination, and movement pattern perception and memory. 475 subjects ranging in age from five years to adult were tested and developmental trends were established. The test was found to be a useful tool in measuring… (More)
This paper proposes a layered strategy for controlling character motion in a dynamically varying environment. We illustrate this approach in the context of a physically simulated human swimmer. The swimmer attempts to follow a dynamic target by augmenting cyclic stroke control with a set of pre-specified variations, based on the current state of the… (More)
For believable character animation, skin deformation should communicate important deformation effects due to underlying muscle movement. Anatomical models that capture these effects are typically constructed from the inside out. Internal tissue is modeled by hand and a surface skin is attached to, or generated from, the internal structure. This paper… (More)
A test of kinaesthetic sensitivity was constructed, consisting of three tasks: localization, discrimination of position and movement, and perception of pattern. The purposes were to devise a test of kinaesthetic perception in children and adults, and to study possible developmental trends in such sensitivity. 180 children (five to 12 years) and adults were… (More)
It is often argued that, in general, men are superior to women in perceptual motor skills (for example, car driving). Extensive reviews of the relevant literature do not give convincing evidence of sex differences in manual dexterity or motor skills in general. However, in the studies reported here, variables have been isolated which demonstrate that sex… (More)
Interactive control of a physically simulated character is a challenging problem, due both to the complexity of controlling multiple degrees of freedom with lower dimensional input and because many interesting motions lie on the fringes of character stability. This paper addresses these problems using a novel technique called predictive feedback, where a… (More)
This Interactivity demonstration presents a novel coupling of webcasting (streaming) with audioconferencing in which Voice over Internet Protocol (VoIP) communication is used in webcasts to enhance interactivity, engagement, and the sense of presence among viewers and presenters.
Electrophysiological experiments have shown that during voluntary movement, the activity of kinesthetic receptors relevant to actively contracting muscles is modified. Furthermore, efferent motor commands interact with the central transmission and processing of kinesthetic sensory input. This article addresses itself to the question of whether the efferent… (More)