高、低自尊个体对负性情绪注意偏向的眼动研究

采用"点探测任务"实验范式,选取29名大学生被试,用眼动仪记录被试观察情绪图片的眼动轨迹,考察高、低自尊个体注意偏向的内部加工机制。结果表明:低自尊个体对正性情绪图片的总注视时间显著短于高自尊个体,即低自尊个体缺乏对正性情绪图片的注意偏向,对负性情绪图片不存在注意警觉和注意维持,存在注意回避;高自尊个体对负性情绪图片的总注视时间显著长于正性情绪图片,即对负性情绪图片存在注意偏向。     

高焦虑个体对威胁性刺激的注意偏向特点*

采用点探测实验范式,将图片按照威胁性分为高威胁性和一般威胁性,探讨焦虑程度不同的个体对不同威胁性刺激的注意特点。采用状态-特质焦虑问卷从265个大学生中选取了33名高焦虑被试和31名对照组被试。结果发现：（1）高焦虑组个体对一般威胁性刺激有显著注意偏向,对高威胁性刺激有注意回避趋势;（2）对照组个体对一般威胁性刺激没有表现出注意偏向,对高威胁刺激有注意偏向趋势。结论：（1）即使是一般威胁性图片也能引起高焦虑被试的注意偏向 （2）高威胁性图片才能引起对照组个体产生注意偏向的趋势。     

高低厌恶敏感性个体对不同情绪刺激的注意时程:来自ERP研究的证据

选取高厌恶敏感性和低厌恶敏感性个体作为本实验的研究对象,运用ERP技术考察观看厌恶、中性情绪图片时,不同厌恶敏感性个体注意加工时程差异。结果发现,从早期波开始,相比低厌恶敏感性个体,高厌恶敏感性个体N1、N2波的波幅都增强,但到了晚期波,高低厌恶敏感性个体注意厌恶情绪图片差异不显著,但高厌恶个体注意中性图片的LPP波显著增强。这表明高厌恶敏感性个体不仅对高厌恶图片有高注意,对中性情绪图片也表现出较多注意。     

不同特质焦虑水平的选择性注意偏向

高特质焦虑个体常表现出对威胁性刺激的选择性注意偏向的特点。然而其潜在的神经机制目前仍不清楚。通过记录高、低特质焦虑者各17名进行情绪加工时的ERP,比较了两组个体在选择性注意偏向发生的时间进程和相关的神经反应的差异。结果发现,高特质焦虑者诱发出更大的N1,进一步发现恐惧图片比中性图片诱发更大的N1;而低特质焦虑者诱发了更大的N2,特质焦虑得分越低, N2波幅越大。结果初步说明高特质焦虑者加工早期对恐惧图片分配了较多的注意资源,并且其抑制执行功能可能受损;而低特质焦虑者较晚开始区分恐惧图片和中性图片。这些结果提供了支持认知-动机模型的新证据。     

青少年依恋环境的情绪启动和注意恢复功能

以往研究发现自然环境能激发个体积极情绪,恢复集中注意。当个体对自然环境的依恋程度不同时,环境的情绪启动和注意恢复功能是否存在差异?研究以96名初一学生为被试考察地方依恋对环境的情绪和注意恢复作用是否产生影响。根据被试对某自然环境的依恋水平将其分为高依恋和低依恋组,并在被试参加情绪启动实验(实验1)和集中注意实验(实验2)时将其分为实验组和控制组以考察对环境依恋水平不同的被试观看该环境图片后情绪启动和注意恢复状况是否存在差异。实验1显示低依恋实验组对厌恶的反应时显著短于其他三组;实验2结果表明高依恋实验组被试在观看自然环境图片后在注意后测任务上的反应时显著短于低依恋实验组和控制组。     

高中生的亲子沟通质量对情绪性刺激注意偏向的影响

为了探讨高中生亲子沟通质量对情绪性刺激注意偏向的影响,实验一采用亲子沟通量表,筛选出亲子沟通高分组和低分组,两组被试参加点探测任务,要求被试迅速判断情绪性图片出现后呈现的圆点的位置。实验为2（组别：高亲子沟通组、低亲子沟通组）×2（情绪类型：负性和正性）×2（探测点位置一致性：一致、不一致）的混合实验设计。结果发现,负性和正性刺激的不一致条件反应时均显著短于一致条件的反应时。实验二采用事件相关电位（ERP）记录了情绪性图片诱发的信号反应。结果发现,亲子沟通高分组对负性刺激所诱发的注意指向和集中（P2成分）及选择和巩固（P3成分）显著高于低分组。以上结果表明,亲子沟通较好,在注意早期定向和选择中会对负性情绪刺激产生注意偏向。亲子沟通较差,则对情绪性的刺激没有明显的偏向性,类似于“漠不关心”的状态。     

高中生的亲子沟通质量对情绪性刺激注意偏向的影响

为了探讨高中生亲子沟通质量对情绪性刺激注意偏向的影响,实验一采用亲子沟通量表,筛选出亲子沟通高分组和低分组,两组被试参加点探测任务,要求被试迅速判断情绪性图片出现后呈现的圆点的位置。实验为2（组别：高亲子沟通组、低亲子沟通组）×2（情绪类型：负性和正性）×2（探测点位置一致性：一致、不一致）的混合实验设计。结果发现,负性和正性刺激的不一致条件反应时均显著短于一致条件的反应时。实验二采用事件相关电位（ERP）记录了情绪性图片诱发的信号反应。结果发现,亲子沟通高分组对负性刺激所诱发的注意指向和集中（P2成分）及选择和巩固（P3成分）显著高于低分组。以上结果表明,亲子沟通较好,在注意早期定向和选择中会对负性情绪刺激产生注意偏向。亲子沟通较差,则对情绪性的刺激没有明显的偏向性,类似于“漠不关心”的状态。     

自尊对情绪面孔注意偏向的影响

研究表明低自尊个体对负性信息表现出高度的警觉和关注,而高自尊个体相对来说注意积极地方面,但并未表现明显偏向。为了精确记录注意选择神经加工时间进程,进一步从电生理学角度对低自尊个体的负性注意偏向进行探讨,本研究运用事件相关电位（ERP）技术对不同自尊个体在点-探测任务过程中的注意偏向进行研究。实验一以129名在校大学生作为被试,以大学生面孔情绪图片（高兴、悲伤和中性）作为实验材料,结果发现,高低自尊个体之间没有出现注意偏向的差异。实验二以实验一筛选出的30名高低自尊个体作为被试,选择了更具负性情绪唤醒的愤怒图片作为实验材料（高兴、愤怒和中性）,行为数据结果发现,两组被试都没有出现注意偏向,相反,无论是在高兴面孔条件下还是在愤怒面孔条件下,低自尊个体的反应时都快于高自尊个体;电生理学数据结果发现,在低自尊个体中,在两种情绪面孔条件下,有效线索的P1峰值显著高于无效线索,而无效线索的N2pc峰值显著高于有效线索。电生理学数据表明,无论是负性的还是正性的情绪性的信息都能引起低自尊个体的更多注意,表明低自尊个体更容易受到情绪性信息的影响。     

厌恶和恐惧情绪对跨期选择的不同影响：基于ERP的研究

本研究运用事件相关电位技术(ERPs)考察厌恶和恐惧情绪对跨期选择的影响。其中,厌恶和恐惧情绪采用情绪面孔图片进行启动,分析跨期选择任务中评估阶段所诱发的ERP成分。行为结果发现,与中性面孔相比,厌恶面孔启动使个体倾向于选择立即奖赏。ERP结果发现,在选项评估阶段,厌恶面孔比中性和恐惧面孔启动诱发更大的P2、P3和LPP波幅。这说明,厌恶情绪促使个体投入更多的注意和动机资源对跨期选项进行评估,进而使个体倾向即时满足。     

厌恶和恐惧情绪对跨期选择的不同影响：基于ERP的研究

本研究运用事件相关电位技术(ERPs)考察厌恶和恐惧情绪对跨期选择的影响。其中,厌恶和恐惧情绪采用情绪面孔图片进行启动,分析跨期选择任务中评估阶段所诱发的ERP成分。行为结果发现,与中性面孔相比,厌恶面孔启动使个体倾向于选择立即奖赏。ERP结果发现,在选项评估阶段,厌恶面孔比中性和恐惧面孔启动诱发更大的P2、P3和LPP波幅。这说明,厌恶情绪促使个体投入更多的注意和动机资源对跨期选项进行评估,进而使个体倾向即时满足。     

Differential response patterns to disgust-related pictures

ABSTRACT

In the present study, attentional bias was investigated as a potential predisposing mechanism for the contamination-related subtype of obsessive-compulsive disorder (C-OC disorder). Fifty healthy participants with varying degrees of subclinical C-OC symptoms performed a visual search task to measure differential attentional biases elicited by neutral, disgust-, and fear-specific pictorial material. Participants had to find a target picture within five neutral distractor pictures randomly presented on different locations in an array. The task was to decide whether the array contained an unpleasant target picture or not. In randomly-selected emotional trials, participants were further asked about the content of the picture and the confidence of their answer. The results show that the reaction times significantly differed between the emotional and neutral pictures. Participants were significantly more confident in answering questions referring to fear compared to disgust pictures. This effect was marginally amplified in participants with higher C-OC symptoms. We discuss the results within the framework of the cost and benefit hypothesis, which postulates that disgust evolutionarily elicits stronger uncertainty compared to fear, owing to the ambiguous nature of the stimuli. Increased uncertainty might be an important but underestimated factor for pathological disgust experience, such as in obsessive-compulsive disorder.     

Components of attentional biases in contamination fear: Evidence for difficulty in disengagement

Attentional bias for threat has been implicated in the contamination fear (CF) subtype of obsessive-compulsive disorder, but the components of the bias (facilitated attention versus difficulty in disengagement) and the stage of processing during which the bias occurs (early versus late stage of processing) remains unclear. Further, it is unclear whether attentional biases in CF are towards fear or disgust-related stimuli. The present study examined attentional biases in a group of individuals selected to have elevated CF (n = 23) and a control group (n = 28) using the spatial cueing task. Stimuli were neutral, disgusting, or frightening pictures presented for either 100 or 500 ms. Results revealed evidence for delayed disengagement from both fear and disgust stimuli in the CF group, but not in the control group. The effect appeared to be greater at 500 ms stimulus presentation, but did not appear to differ between fear and disgust stimuli. The CF group was associated with delayed disengagement from threat even when controlling for generic response slowing. Theoretical and clinical implications are discussed.     

Attentional bias differences between fear and disgust: Implications for the role of disgust in disgust-related anxiety disorders

Research demonstrates a relation between disgust and anxiety-related pathology; however, research has yet to reveal mechanisms by which disgust may contribute to anxiety. The current experiment examined attentional bias characteristics as one route by which disgust influences anxiety. Eighty undergraduate participants completed a rapid serial visual presentation attention task using fear, disgust, or neutral target stimuli. Task-relevance of the target's presentation was also manipulated. Results revealed that task-relevant disgust targets impaired attention among all participants, but task-irrelevant disgust targets impaired attention only in high disgust prone individuals. Difficulty in disengagement characterised both disgust and fear attentional biases, but the difficulty in disengagement was greater for disgust compared to fear attentional biases. High disgust prone individuals displayed exaggerated difficulty in disengaging attention from disgust targets compared to low disgust prone individuals. The results suggest that disgust attentional biases differ from fear attentional biases. The characteristics of disgust attentional biases are discussed as possible mechanisms by which disgust functions in certain anxiety disorders.     

Disgust domains in the prediction of contamination fear

Previous research has shown a relationship between the emotion of disgust and the fear of contamination. Heightened sensitivity to disgust and increased concerns over contamination has been observed in various disorders, such as obsessive-compulsive disorder (OCD) and specific phobias. However, there is a paucity of research identifying the specific domains of disgust that contribute to contamination fear. The present study soughts to determine which domains of disgust elicitors reliably predict scores on a measure of OCD contamination obsessions and washing compulsions. We further conducted exploratory analyses that examined differences in disgust sensitivity among individuals classified as high and low in contamination fear. Three hundred and twenty-three undergraduate participants completed two measures of disgust sensitivity (Disgust Scale; Disgust Emotion Scale) and a measure of contamination fear (Padua inventory, contamination obsessions and washing compulsions subscale). Stepwise multiple regression analyses indicated that contamination fear was best predicted by seven different disgust domains, thereby suggesting that contamination fear is accounted for by generalized, rather than domain-specific, disgust elicitors. The categories of disgust that predicted contamination fear appeared to have an underlying commonality of threat of contagion. The relationship between fear of contamination and disgust sensitivity was more pronounced for animal reminder disgust elicitors as opposed to core disgust elicitors. Results also showed that individuals classified as high in contamination fear scored significantly higher than the low contamination fear group on all disgust domains. Clinical and research implications regarding the interrelationships between fear, disgust, and the fear of contamination are discussed.     

不同注意资源水平上核心厌恶和道德厌恶刺激加工分离效应的ERPs研究

厌恶帮助人类避免接触生物病菌、社会道德威胁物。本研究采用“线索—靶”范式考察不同注意资源水平上核心和道德厌恶刺激的认知加工特征。结果发现,核心厌恶刺激诱发的P2波幅显著大于道德厌恶和中性刺激;有效线索下核心厌恶刺激的P3波幅与道德厌恶刺激间差异不显著,而无效线索下核心厌恶刺激的P3波幅显著大于道德厌恶。结果表明两类厌恶刺激在不同注意资源水平上存在加工分离效应,支持了厌恶情绪“异质性”的观点。     

高强迫症状个体对图片刺激的注意偏向

以往强迫症注意偏向研究呈现出不一致的结果。为探索研究结果的不一致性是否由于被试取样和刺激选择所导致,当前研究改用非临床强迫症状个体作为研究对象,采用图片作为刺激来引发被试的反应和脑电波的变化。研究采用2(高强迫症状组、低强迫症状组)×3(中性图片、一般威胁图片和强迫相关图片)的混合实验设计,因变量为反应时和相关的脑电成分,结果显示:高强迫症状组较低强迫症状组对强迫相关图片表现出了更大幅度的P2波幅的变化。从而可以推断出,高强迫症状个体对强迫相关图片表现出了明显的注意偏向,其成分为注意脱困,主要发生在早期自动化加工阶段。     

注意偏向训练对广泛性焦虑障碍负性情绪注意偏向的影响

采用改良的点探测任务,探讨了注意偏向训练能否改变GAD患者的负性情绪注意偏向并缓解其焦虑状态,及注意偏向训练的作用机制。结果发现,与控制组相比,训练组被试的负性注意偏向分数显著降低,具体表现为训练后训练组的负性注意解除能力显著高于控制组,两组被试的负性注意警觉在前后测均未有显著变化;注意偏向训练引起了GAD患者积极情绪的变化,缓解了状态焦虑。这证明了注意偏向训练对改变GAD患者负性情绪注意偏向及缓解其焦虑状态的有效性,并揭示这种改变主要是通过提升其对负性刺激的注意解除能力来实现的。     

恐惧与厌恶情绪图片系统的编制：基于两种情绪的区分

基于恐惧与厌恶情绪刺激材料界定模糊的问题,实验一在总结前人研究中实验材料方面混淆恐惧和厌恶的基础上,通过问卷法完成了对恐惧与厌恶图片系统初步的搜集、整理工作;实验二通过进一步测评得到了具有良好信度的恐惧与厌恶情绪图片系统,图片系统中的恐惧与厌恶情绪很好的分离,且图片系统中动物、场景、物体三类图片的恐惧、厌恶程度均存在显著差异,可适用于需要不同种类情绪刺激的具体应用性研究。     

恐惧与厌恶情绪图片系统的编制：基于两种情绪的区分

基于恐惧与厌恶情绪刺激材料界定模糊的问题,实验一在总结前人研究中实验材料方面混淆恐惧和厌恶的基础上,通过问卷法完成了对恐惧与厌恶图片系统初步的搜集、整理工作;实验二通过进一步测评得到了具有良好信度的恐惧与厌恶情绪图片系统,图片系统中的恐惧与厌恶情绪很好的分离,且图片系统中动物、场景、物体三类图片的恐惧、厌恶程度均存在显著差异,可适用于需要不同种类情绪刺激的具体应用性研究。     

Priming the activation of fear and disgust: evidence for semantic processing

Given that semantic processes mediate early processes in the elicitation of emotions, we expect that already activated emotion-specific information can influence the elicitation of an emotion. In Experiment 1, participants were exposed to masked International Affective Picture System (IAPS) pictures that elicited either disgust or fear. Following the presentation of the primes, other IAPS pictures were presented as targets that elicited either disgust or fear. The participants' task was to classify the target picture as either disgust or fear evoking. In Experiment 2, we substituted the IAPS primes with facial expressions of either disgust or fear. In Experiment 3, we substituted the IAPS primes with the words disgust or fear. In all three experiments, we found that prime-target combinations of the same emotion were responded to faster than prime-target combinations of different emotions. Our findings suggest that the influence of primes on the elicitation of emotion is mediated by activated schemata or appraisal processes.