Effects of aversive odour presentation on inhibitory control in the Stroop colour-word interference task
Effects of aversive odour presentation on inhibitory control in the Stroop colour-word interference task
复制标题
DOI：
10.1186/1471-2202-11-131
复制
发表时间：
2010-10-18
期刊：
影响因子：
2.4
通讯作者：
Reske, Martina
中科院分区：
文献类型：
--
作者：
Finkelmeyer, Andreas;Kellermann, Thilo;Reske, Martina
背景：由于嗅觉系统独特的神经投射，气味具有直接影响情感过程的能力。此外，研究表明，情绪状态可以影响各种非情绪认知任务，如记忆和计划。然而，情感和认知过程之间的联系仍然没有完全理解。本研究使用嗅觉通路诱导人类的负面情绪状态，在一个标准的，单次试验手动Stroop色词干扰任务中，研究其对抑制控制性能的影响。一种令人不快的气味（H（2）S）和一种情绪中性的气味（丁香酚）在两个独立的实验运行中呈现给25名健康志愿者，两个实验都在与环境空气交替的区块中进行，同时他们执行认知任务。不愉快的气味的呈现通过减少对不一致刺激的反应时间来减少Stroop干扰，而中性气味的呈现对任务绩效没有影响。结论：在本研究所用的任务中，气味诱导的负面情绪状态似乎促进了认知加工，这可能是通过增加所施加的认知控制的量来实现的。这与其他研究结果相反，这些研究结果表明在气味诱导的负面情绪状态下认知表现受损，但与情绪一致性处理模型一致。
Background: Due to the unique neural projections of the olfactory system, odours have the ability to directly influence affective processes. Furthermore, it has been shown that emotional states can influence various non-emotional cognitive tasks, such as memory and planning. However, the link between emotional and cognitive processes is still not fully understood. The present study used the olfactory pathway to induce a negative emotional state in humans to investigate its effect on inhibitory control performance in a standard, single-trial manual Stroop colour-word interference task. An unpleasant (H(2)S) and an emotionally neutral (Eugenol) odorant were presented in two separate experimental runs, both in blocks alternating with ambient air, to 25 healthy volunteers, while they performed the cognitive task.Results: Presentation of the unpleasant odorant reduced Stroop interference by reducing the reaction times for incongruent stimuli, while the presentation of the neutral odorant had no effect on task performance.Conclusions: The odour-induced negative emotional state appears to facilitate cognitive processing in the task used in the present study, possibly by increasing the amount of cognitive control that is being exerted. This stands in contrast to other findings that showed impaired cognitive performance under odour-induced negative emotional states, but is consistent with models of mood-congruent processing.