The N-SEEV is a stochastic model of overt attention within a visual display or workspace. The model integrates elements from several existing models of attention (Bundesen, 1987, 1990; Itti & Koch, 2000; Wolfe, 1994; Wickens, et al., 2003) to provide (1) predictions of the allocation of visual attention among discrete display channels; (2) the likelihood of a scanning transition between any pair of channels; and (3) the number of eye movements needed to fixate the onset of a visual signal or event. Preliminary tests of the model show a close fit between model predictions and actual pilot scanning and noticing times.
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