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Science 15 April 1983:
Vol. 220. no. 4594, pp. 327 - 329
DOI: 10.1126/science.6836276
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Articles

Science, Vol 220, Issue 4594, 327-329
Copyright © 1983 by American Association for the Advancement of Science

articles

Visual sustained attention: image degradation produces rapid sensitivity decrement over time

KH Nuechterlein, R Parasuraman, and Q Jiang

Perceptual sensitivity to a visual target presented in a random continuous sequence of targets and nontargets decreased rapidly over time when stimuli were highly degraded visually but not when moderately degraded or undegraded. Large declines in sensitivity, independent of changes in response criterion, were found after only 5 minutes of observation. These rapid decrements of sensitivity to degraded targets seem to result from demands on the limited capacity of visual attention.


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