Fiona M. Rivera

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In a virtual environment (VE), efficient techniques are often needed to economize on rendering computation without compromising the information transmitted. The reported experiments devise a functional fidelity metric by exploiting research on memory schemata. According to the proposed measure, similar information would be transmitted across synthetic and(More)
This research concentrates on providing high fidelity animation, only achievable with offline rendering solutions, for interactive fMRI-based experiments. Virtual characters are well established within the film, game and research worlds, yet much remains to be learned about which design, stylistic or behavioural factors combine to make a believable(More)
Comparisons between real-world spatial judgments and simulation equivalents provide performance benchmarks as well as tools to assess whether a technological set-up would be of similar functional fidelity to a real-world task situation. It is widely recognised that perceptual fidelity is not necessarily equivalent to physical simulation. Identifying ways to(More)
An innovative action-based motoric measure of slant is proposed, based on gait. This measure is ecologically-valid derived from the angle that the foot makes in relation to the horizontal ground plane immediately before impact (Figure 1). This work explores whether the proposed measure is affected by factors such as material of the walking surface and(More)
The goal of the proposed experiments is to assess the fidelity of a simulation as well as develop synthetic imaging systems which will result in controlled functional Magnetic Resonance Imaging (fMRI) experiments involving the normal population as well as patients. The ultimate goal of the experiments planned is to explore whether natural and artificial(More)
Department of Informatics, University of Sussex, UK, BN1 9QH;,,; Tom Troscianko is with the Department of Experimental Psychology, University of Bristol, UK, BS8 1TU; e-mail:; Rycharde Hawkes is with Hewlett-Packard Labs,(More)
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