LaBerge D, Brown V, Carter M, Bash D, Hartley A
Department of Cognitive Sciences, University of California, Irvine.
J Exp Psychol Hum Percept Perform. 1991 Feb;17(1):65-76. doi: 10.1037//0096-1523.17.1.65.
Three experiments explored the gradual narrowing of visual attention to a letter target when other letters were positioned close by. The method by which attention was narrowed involved presenting a digit target immediately prior to the latter target and in the same location for progressively shorter durations and requiring the subject to identify both the digit target and the letter target before responding. The response time data from the first 2 experiments indicated that shorter durations of the digit reduced the amount of information processed from noise letters positioned on either side of the letter target. In the third experiment, in which separation of letters was increased slightly, the response times indicated that the information from flanking noise letters may have been virtually eliminated.
三项实验探究了当其他字母靠近放置时，视觉注意力逐渐聚焦于一个字母目标的过程。注意力聚焦的方法包括在字母目标出现之前，先在同一位置呈现一个数字目标，且呈现时间逐渐缩短，并要求受试者在做出反应之前识别数字目标和字母目标。前两项实验的反应时间数据表明，数字呈现时间越短，从位于字母目标两侧的干扰字母中处理的信息量就越少。在第三项实验中，字母间距略有增加，反应时间表明来自两侧干扰字母的信息可能实际上已被消除。
