University of Oregon.
J Cogn Neurosci. 1991 Fall;3(4):329-34. doi: 10.1162/jocn.1991.3.4.329.
Normal subjects showed a right hemisphere processing superiority in reaction times to visual stimuli under conditions of sustained visual attention. This asymmetry was predicted based on findings in studies of blood flow, clinical populations, and physiology on lateralization of the noradrenergic system. The asymmetry was eliminated when an auditory event was delivered simultaneously with the visual target suggesting a common pathway between voluntary sustained alerting and more automatic alerting effects of external stimuli. The act of sustaining alertness also interacted with covert orienting of attention as would be expected if alerting influenced the efficiency of covert shifts of attention.
正常受试者在持续视觉注意条件下对视觉刺激的反应时间表现出右半球加工优势。这种不对称性是基于对血流、临床人群和去甲肾上腺素能系统偏侧化的生理学研究发现而预测的。当听觉事件与视觉目标同时出现时，这种不对称性就会消除，这表明自愿持续警戒和外部刺激更自动的警戒效应之间存在共同的通路。保持警觉的行为也与注意力的隐蔽定向相互作用，如果警戒影响注意力的隐蔽转移的效率，那么这是可以预期的。
