Mike L. Matthews

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Visual search and decision-making performance together with subjective fatigue were investigated over a 4-hr time block as a function of display foreground and background chromaticity using colors matched for brightness. Although some small differences in performance related to chromaticity were observed, these were not exacerbated over time. On the basis(More)
We explored how to bridge the gulf between physical and virtual environments for the sport of whitewater paddling. Field observations, critical incident analysis, exploratory prototyping, and field and lab evaluations were used to make discoveries. Lessons learned in this ethnographic process led to the design of a guiding, communication, and navigation aid(More)
Performance and reports of comfort when proof-reading text displayed on a CRT were investigated as a function of the text/background colour. Luminances were those typically produced by commercially available hardware and software, and task conditions were designed to simulate those experienced by typical users. Colours from the extremes of the spectrum(More)
The effect of prolonged cathode ray tube (CRT) work on the afferent visual neural and focusing system of the human eye was examined by visually evoked potentials (VEPs) and laser optometer techniques, respectively. These measures were compared with parallel measurements of search performance. Ten volunteers performed three 4-hr sessions of a search/decision(More)
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