Center for Mind/Brain Sciences, University of Trento.
Dipartimento di Scienze della Vita, University of Trieste.
Behav Neurosci. 2021 Jun;135(3):389-401. doi: 10.1037/bne0000423. Epub 2021 Apr 29.
Previous evidence has shown that after conditioning reward cues may continue to grab attention even when the paired reward is devalued, thus triggering an irrational attentional capture. Here, we investigated whether such persistent cue attentional salience, once established, can be abolished. In Experiment 1, we first confirmed that the cue attentional salience outlasted reward devaluation, and then we found that such persistent capture did not change after an incentive-learning procedure with a devalued reward. In Experiment 2, we showed that the reward cue salience remained unaltered after reward devaluation for at least 1 week. In Experiment 3, we finally succeeded in modifying the cue attentional salience when a new contingency between the cue and the reward was learned, and the reward was not devalued, such that the organism was in a high motivational state. The pattern of results emerging from our study reveals a complex interaction between attention, learning, and motivation, and may help shedding light on the learning mechanisms underlying addiction. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
先前的证据表明,在条件反射奖励线索后,即使配对的奖励被贬低,这些线索仍可能继续吸引注意力,从而引发不合理的注意力捕捉。在这里,我们研究了这种持续的线索注意力突显,一旦建立,是否可以被消除。在实验 1 中,我们首先证实了线索注意力的持久性超过了奖励贬值,然后发现,在对贬值奖励进行激励学习程序后,这种持续的捕获并没有改变。在实验 2 中,我们表明,即使在奖励贬值后至少 1 周,奖励线索的显著性仍然不变。在实验 3 中,我们最终成功地修改了线索注意力的显著性,当学习到线索和奖励之间的新关联且奖励没有被贬低时,即生物体处于高动机状态。我们的研究结果揭示了注意力、学习和动机之间的复杂相互作用,这可能有助于揭示成瘾的学习机制。