Harvey Alistair J
a Department of Psychological Science , University of North Georgia , Dahlonega , USA.
Q J Exp Psychol (Hove). 2016;69(4):669-77. doi: 10.1080/17470218.2015.1040803. Epub 2015 May 20.
The aim of this study was to measure the extent to which alcohol intoxication restricts the scope of attention in the visual field. A group of intoxicated (n = 31; mean BAC ≈ .08%) and placebo control (n = 31; mean BAC ≈ .00%) participants were required to correctly identify visual probes while performing two verbal categorization tasks: one designed to widen the scope of visual attention on to each stimulus word, the other to narrow attention on to the central letter of each word. Response times to surprise probes interpolated between categorization trials were measured and these catch trials could appear in any of the stimulus word letter positions. As predicted by alcohol myopia theory (AMT), which assumes that the drug narrows focal attention, intoxicated participants made slower responses than the sober controls to probes displayed in non-central letter positions, although right-field probe reaction times (RTs) were slower than those for left-field targets. This response asymmetry and the wider theoretical implications of these findings are discussed.
本研究的目的是测量酒精中毒在多大程度上限制了视野中的注意力范围。一组醉酒参与者（n = 31；平均血液酒精浓度约为0.08%）和安慰剂对照组（n = 31；平均血液酒精浓度约为0.00%）在执行两项语言分类任务时，需要正确识别视觉探测刺激：一项任务旨在扩大对每个刺激词的视觉注意力范围，另一项任务旨在将注意力缩小到每个词的中心字母上。测量了分类试验之间插入的意外探测刺激的反应时间，这些捕捉试验可能出现在任何刺激词字母位置。正如酒精近视理论（AMT）所预测的那样，该理论假设酒精会缩小焦点注意力，醉酒参与者对非中心字母位置显示的探测刺激的反应比清醒对照组慢，尽管右视野探测刺激的反应时间比左视野目标的反应时间慢。本文讨论了这种反应不对称性以及这些发现更广泛的理论意义。
