Bourgeois Alexia, Neveu Rémi, Bayle Dimitri J, Vuilleumier Patrik
a Department of Neuroscience, Laboratory for Behavioral Neurology and Imaging of Cognition , University of Geneva , Geneva , Switzerland.
b Institut du Cerveau et de la Moelle Epinière (ICM) , INSERM UMRS 1127, Groupe Hospitalier Pitié-Salpêtrière , Paris , France.
Cogn Emot. 2017 Jan;31(1):109-118. doi: 10.1080/02699931.2015.1085366. Epub 2015 Sep 24.
In order to behave adaptively, attention can be directed in space either voluntarily (i.e. endogenously) according to strategic goals, or involuntarily (i.e. exogenously) through reflexive capture by salient or novel events. The emotional or motivational values of stimuli can also influence attentional orienting. However, little is known about how reward-related effects compete or interact with endogenous and exogenous attention mechanisms. Here we designed a visual search paradigm in which goal-driven and stimulus-driven shifts of attention were manipulated by classic spatial cueing procedures, while an irrelevant, but previously rewarded stimulus also appeared as a distractor and hence competed with both types of spatial attention during search. Our results demonstrated that stimuli previously associated with a high monetary reward received higher attentional priority in the subsequent visual search task, even though these stimuli and reward were no longer task-relevant, mitigating the attentional orienting induced by both endogenous and exogenous cues.
为了适应性地表现，注意力可以根据战略目标在空间上被自愿地（即内源性地）引导，或者通过显著或新颖事件的反射性捕获被非自愿地（即外源性地）引导。刺激的情感或动机价值也会影响注意力定向。然而，关于奖励相关效应如何与内源性和外源性注意力机制竞争或相互作用，我们知之甚少。在这里，我们设计了一种视觉搜索范式，其中注意力的目标驱动和刺激驱动转移通过经典的空间线索化程序进行操纵，而一个无关但先前得到奖励的刺激也作为干扰物出现，因此在搜索过程中与两种类型的空间注意力竞争。我们的结果表明，先前与高货币奖励相关的刺激在随后的视觉搜索任务中获得了更高的注意力优先级，即使这些刺激和奖励不再与任务相关，这减轻了内源性和外源性线索所诱导的注意力定向。
