This paper examines the effects of stress on sustained attention. With recognition of the task itself as the major source of cognitive stress, a dynamic model is presented that addresses the effects of stress on vigilance and, potentially, a wide variety of attention performance tasks.
Hancock, Peter A. and Warm, Joel S.
"A Dynamic Model of Stress and Sustained Attention,"
Journal of Human Performance in Extreme Environments:
1, Article 4.
Available at: http://docs.lib.purdue.edu/jhpee/vol7/iss1/4