Bob G. Witmer

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The effectiveness of virtual environments (VEs) has often been linked to the sense of presence reported by users of those VEs. (Presence is defined as the subjective experience of being in one place or environment, even when one is physically situated in another.) We believe that presence is a normal awareness phenomenon that requires directed attention and(More)
The ability to accurately estimate distance is an essential component of navigating large-scale spaces. Although the factors that inuence distance estimation have been a topic of research in real-world environments for decades and are well known, research on distance estimation in virtual environments (VEs) has only just begun. Initial investigations of(More)
The detection of ulnar nerve lesions at Guyon's canal requires evaluation of the distal ulnar sensory and distal motor latency to the abductor digiti minimi (ADM). In addition precision in the measurement of distal motor latencies (DL) to the first dorsal interosseous (1DI) muscle and response amplitude is necessary. This study examines a standardized(More)
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