Context effects on odor processing: An event-related potential study
Context effects on odor processing: An event-related potential study
复制标题
环境对气味处理的影响：事件相关电位研究
DOI：
10.1016/j.neuroimage.2008.03.046
复制
发表时间：
2008
期刊：
影响因子：
5.7
通讯作者：
B. Pause
中科院分区：
文献类型：
--
作者：
J. Laudien;Sonja Wencker;R. Ferstl;B. Pause
本研究旨在探讨认知/情绪偏差对中枢神经气味加工的影响。45名女性参与者被分为三组，并被引导相信气味是天然的，健康的提取物（正偏差），潜在的危险（负偏差），或常见的测试气味（对照）。气味（乙酸异冰片酯）通过恒流嗅觉计呈现，并从60个头皮位置记录EEG。在负偏差条件下，参与者报告说幸福感降低，并认为气味不那么令人愉快。然而，无论是阈值还是强度评级都没有被上下文条件改变。化学感觉事件相关电位（CSERP）分析显示，负偏压条件下N1和P2成分的潜伏期延长，正偏压条件下缩短。电流源密度最突出的是在额叶负偏见的参与者。研究结果表明，期望感知一种情绪上重要的气味会影响气味的早期编码。
The present study aimed to investigate the effects of cognitive/emotional bias on central nervous odor processing. Forty-five female participants were divided into three groups and were either led to believe the odor was a natural, healthy extract (positive bias), potentially hazardous (negative bias), or a common test odorant (control). The odor (isobornyl acetate) was presented via a constant-flow olfactometer and the EEG was recorded from 60 scalp locations. In the negative bias condition, participants reported reduced well-being and judged the odor as less pleasant. However, neither the thresholds nor the intensity ratings were changed by the context condition. Chemosensory event-related potential (CSERP) analysis revealed that the latencies of the N1 and P2 components were prolonged in the negative bias condition and shortened in the positive bias condition. Current source densities were most prominent in the frontal lobe in negatively biased participants. The findings show that expecting to perceive an emotionally significant odor affects the early encoding of odors.
登录
查看更多内容
嗅觉事件相关潜在反应的偏侧性。
影响因子：
3.5
作者：
Olofsson,JonasK;Broman,DanielA;Gilbert,PaulE;Dean,Pamela;Nordin,Steven;Murphy,Claire
通讯作者：
Murphy,Claire
影响因子：
3.5
作者：
Dalton, P
通讯作者：
Dalton, P
急性化学暴露对健康症状的认知影响。
DOI：
10.1037//0278-6133.18.6.579
发表时间：
1999
期刊：
Health psychology : official journal of the Division of Health Psychology, American Psychological Association
影响因子：
--
作者：
Dalton,P
通讯作者：
Dalton,P
影响因子：
3.7
作者：
T. Thesen;C. Murphy
通讯作者：
T. Thesen;C. Murphy
嗅觉事件相关电位：老年男性表现出最大的缺陷。
DOI：
10.1016/s0168-5597(97)00020-8
发表时间：
1997
期刊：
Electroencephalography and clinical neurophysiology
影响因子：
--
作者：
Morgan,CD;Covington,JW;Geisler,MW;Polich,J;Murphy,C
通讯作者：
Murphy,C