Kwansei Gakuin University.
J Exp Psychol Anim Learn Cogn. 2020 Jul;46(3):273-285. doi: 10.1037/xan0000243. Epub 2020 Apr 16.
Voluntary wheel running works as an effective unconditioned stimulus (US) to establish conditioned taste aversion (CTA) in rats with a preceding taste solution as a conditioned stimulus (CS): repeated CS-US pairings evoke avoidance of the CS in the two-choice (CS vs. tap water) test administered at the end of the training. Experiment 1 demonstrated that exposure to running immediately before each CS-US trial alleviates CTA. Subsequent two experiments explored the characteristics of the proximal US-preexposure effect: the alleviation of CTA by the pretrial running was not affected by changing the background contexts between the pretrial and the trial running (Experiment 2) or by signaling the pretrial running via another taste cue (Experiment 3). These results indicate the robustness of the proximal US-preexposure effect and fit well with the predictions of Wagner's (1976, 1978) priming theory. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
自愿转轮运动作为一种有效的无条件刺激（US），可在大鼠中建立条件味觉厌恶（CTA）：在训练结束时进行的二选一（CS 与自来水相比）测试中，重复 CS-US 配对会引发对 CS 的回避。实验 1 表明，在每次 CS-US 试验之前进行跑步运动可减轻 CTA。随后的两项实验探讨了近端 US 预暴露效应的特征：试验前跑步运动减轻 CTA 的效果不受试验前和试验跑步运动之间背景环境变化的影响（实验 2），也不受另一种味觉线索提示试验前跑步运动的影响（实验 3）。这些结果表明近端 US 预暴露效应的稳健性，并且与 Wagner（1976，1978）的启动理论的预测非常吻合。（PsycInfo 数据库记录（c）2020 APA，保留所有权利）。
