个体与集体时间自我评价:来自行为和ERP的证据

运用事件相关电位技术和时间自我参照任务,通过两个系列实验探讨了大学生的个体时间自我评价和集体时间自我评价。结果显示,被试采用更多积极词、更少消极词来评价过去、现在和未来的个体自我和集体自我,个体自我评价在过去、现在和未来维度上存在积极递增效应;个体自我和集体自我在过去和现在维度上的消极词比积极词诱发了更大LPC波幅,而未来维度上的积极词和消极词之间的LPC波幅无显著差异。这表明,中国大学生的个体时间自我评价和集体时间自我评价均具有跨时间的积极偏向。而且,个体与集体时间自我评价在神经生理水平上都存在负偏向效应。因此,中国大学生的集体时间自我评价与个体时间自我评价具有相似的认知神经特点,在一定程度上为依存型自我建构理论提供了支持证据。

情绪对低感觉寻求者安全行为决策的影响:来自ERPs的证据

为从神经层面深究不同偶然情绪对低感觉寻求者的不安全行为决策过程的影响作用,采用事件相关电位(ERPs)技术进行试验研究。使用中国版大学生感觉寻求问卷筛选低感觉寻求者和中感觉寻求者(对照组)。采用视频片段作为情绪刺激材料在试验前诱发正性和负性情绪,并设置风险情景任务进行风险决策试验。结果表明:不考虑情绪变量时,低感觉寻求组与感觉寻求对照组在安全行为决策上无显著差异;正性情绪下,低感觉寻求个体保持风险规避倾向;负性情绪下,在行为表现上,低感觉寻求者更倾向作出不安全行为决策;负性情绪下,在ERPs成分上,低感觉寻求者诱发的晚期正成分(LPP)潜伏期更晚,表明负性情绪的干扰导致个体在风险分类与评价时难度增大,故此从神经层面解释其外在行为表现的内在原因。总之,情绪在感觉寻求影响安全行为决策过程中产生调节作用。

基于ERP技术的新中式椅具扶手造型对审美心理影响的研究

为探究新中式椅类家具扶手造型风格与消费者偏好之间的关系,获取最受大众喜爱的扶手造型样式,本研究收集了目前常见在售的新中式椅具扶手样本,提出了一种基于事件相关电位试验的消费者主观偏好的客观提取方法,观测消费者由8款扶手样式所诱发的ERP成分,并使用方差分析法进行数据处理。结果表明:不同鹅脖类型将影响用户认知的加工水平,造型张力越大越能引发情绪偏向。扶手是否出头对整体造型影响较小,但仍具有差异。3#样式充分平衡传统与现代元素,引发了最大P3值并最受喜爱;7#样式形态特异,未能激活强烈注意反应并最不受喜爱。因此,在新中式椅具扶手设计中应坚持传统与现代适度权衡的设计策略。

分配意图与上行间接互惠:来自行为与ERP的证据

上行间接互惠是推动人类大规模合作与社会秩序扩展的重要力量。现有文献存在两点不足:一是忽略了上行间接互惠中人们到底是以什么作为评判善意与非善意的基准;二是大部分上行间接互惠文献未意识到“收入效应”这一竞争性假说。本文假设:当人们得到高于社会均值的分配时,真人分配条件下给第三方的金额会高于社会均值,且比电脑分配条件下给第三方的金额更高;当人们得到低于社会均值的分配时,真人分配条件下给第三方的金额会低于社会均值,且比电脑分配条件下给第三方的金额更低。研究采用两阶段独裁者博弈范式。行为和ERP结果均较好支持了本研究的假设。真人分配比电脑分配诱发更大的N1波幅;低于社会均值的分配比高于社会均值的分配诱发更大的FRN;在真人条件下,接受低于社会均值的分配比高于社会均值的分配结果诱发更大的P3波幅。本结果支持了基于社会分配均值的上行间接互惠假说,为该研究领域提供了新的理论基础和实验证据。

How do medical students understand disease behaviors?Evidence from event-related potentials

Objective: To investigate how medical students process Western medicine(WM) terms vs. traditional Chinese medicine(TCM) terms and how this is impacted by analogical priming from the perspective of cognitive neuroscience.Methods: The experiments were designed as a 2(TCM terms vs. WM terms) × 2(correct terms vs.incorrect terms) × 2(analogical priming task vs. non-priming task) scheme. A total of 26 medical students completed a non-priming judgment task and an analogical priming judgment task on medical terms. During the tasks, the participants were asked to make correct/incorrect judgments on WM terms and TCM terms, and their behavioral data and event-related potentials(ERPs) were recorded.Results: Behaviorally, the response speed and accuracy of WM terms were higher than those of TCM terms(both P <.001), indicating a prominent concreteness effect. Analogical priming shortened the response time to medical terms(P <.001), and the response time to TCM terms was shortened more significantly(P =.001). For ERPs, WM terms induced a larger P200(an early positive ERP component), a smaller N400(a negative ERP component), and a higher late positive ERP component, indicating superiority of attention adjustment, smaller-scale semantic activation, and a higher cost of late semantic analysis and integration. However, the analogical priming eliminated the difference between WM and TCM terms in P200 and N400 while maintaining it in the LPC. This suggests that WM terms are sensitive to analogical attention adjustment, and TCM terms are susceptible to analogical semantic integration.Conclusion: Our findings suggest that WM and TCM disease behavior terms may initially differ in concreteness or the use of a verbal-linguistic system. Analogy is more conducive to understanding TCM terms. This research provides important neuroscientific evidence of the difference in thinking between TCM and WM.

Correlations between Event-related Potentials with Pictures Recognition and WMS-RC Scores in Patients with Memory Disorder Caused by Severe Traumatic Brain Injury

This study explored the possibility of using event-related potentials （ERP） for the measurement of picture-recognition memory and examined its correlation with the Chinese Wechsler Memory Scale-revised （WMS-RC） in patients with memory disorder caused by severe traumatic brain injury （sTBI）. The subjects included 20 sTBI patients with memory disorder and 22 healthy individuals. Memory function was measured by using WMS-RC. Behavioral and ERP responses were recorded on-line during performance on a battery of picture recognition and the responses were analyzed off-line for recognition memory effects. Mean memory quotient （MQ） of patients with sTBI was significantly lower than that of the control group. Mean reaction time （RT） was significantly longer and the mean correctness rate （CR） of picture recognition was significantly lower in sTBI group than that of the controls. In controls, the main components of average ERP of picture recognition includes two positive-going waves, designated as P170 and P500, that appear 170 ms and 500 ms after stimulation when the subject could later successfully recall and recognize the pictures. P500 amplitude of target stimulus was significantly higher than that of non-target stimulus. Compared to controls, P500 responses of sTBI group were significantly delayed in latency （P〈0.001） and lower in amplitude （P〈0.001）. P500 latency showed significant negative correlation with MQ and the scores of ＂addition＂, ＂visual recognition＂, ＂picture recall＂, ＂visual reproduction＂ and ＂tactile memory＂ in WMS-RC. ERP of picture recognition provides a neurophysiological approach to directly assess memory impairment, and P500 may serve as a helpful index for memory disorder caused by sTBI in forensic practice.

Characterization of event-related potentials in obsessive compulsive disorder patients: Comparison with depression and generalized anxiety disorder patients

BACKGROUND： Study results of event-refated potential in obsessive compulsive disorder （OCD） remain controversial, potentially as a result of different instruments utilized and their differing technical characteristics. OBJECTIVE： To investigate the differences in several common event-related potentials, Le. contingent negative variations, P300, and mismatch negativity （MMN）, in OCD patients, depression patients, generalized anxiety disorder （GAD） patients, and healthy controls. DESIGN, TIME AND SETTING： A case-control study was performed in the Department of Electrophysiology, Shanghai Mental Health Center from May 2002 to December 2005. PARTICIPANTS： A total of 38 OCD patients, 20 depression patients, and 18 GAD patients, who were diagnosed according to the criteria of Chinese Classification of Mental Disorders （Version 3）, formulated by the Chinese Psychiatry Association, were selected from the Outpatient Department of Shanghai Mental Health Center. Patients with two or more the above diseases were excluded. In addition, 28 healthy people, gender and age matched, were selected as controls. METHODS： Contingent negative variations, P300, and MMN were recorded by a Nicolet Spirit Instrument. All electrodes were attached at Cz according to the Intemationa11020 system, with the mastoid leads as reference and Fpz as ground. MAIN OUTCOME MEASURES： Amplitude and latency of contingent negative variations, P300, and MMN. RESULTS： The contingent negative variations, P300, and MMN were different （P 〈 0.01）. OCD patients showed an increased MI amplitude compared with controls, depression, and GAD patients （P 〈 0.01）. Target P300 amplitudes were significantly lower in OCD, depression, and GAD patients compared with controls （P 〈 0.01）. Moreover, N2 latency and latency of MMN were prolonged in OCD and depression groups compared with controls （P 〈 0.05）. CONCLUSION： Event-related potentials were different in depression, GAD, and OCD patients and healthy controls. In particular, OCD patients exhibited unique characteristics.

Effect of emotional valence on episodic memory stages as indexed by event-related potentials

Several investigations have shown that emotional events show superior recall than non-emotional ones. However, the cortical mechanisms underlying the episodic recall of emotional scenes are still poorly understood. Our main aim was to compare the magnitude of the Event-Related brain Potentials (ERP) old-new effect related to emotionally unpleasant, pleasant and neutral photographic images. As expected, correct recognition of all types of images elicited three topographically distinct ERP components sensitive to the classical old-new recognition effect. The results revealed that the behavioral performances were mainly sensitive to arousal, while the ERP old/new effect over posterior regions (300 - 1000 ms) was exclusively affected by unpleasantness. A later component (1000 - 1400 ms) showed an inverted old/ new effect at parietal sites, which was also sensitive to unpleasantness. These results imply that ERP reflecting episodic conscious recollection and post-retrieval monitoring are clearly affected both by valence and arousal.

THE COMPARATIVE STUDY OF EVENT RELATED POTENTIALSIN PATIENTS WITH OBSESSIVE COMPULSIVE DISORDER,DEPRESSION AND ANXIETY

Objective:To investigate the variations of contingent negative varisations(CNV),P300 and mismatch negativity (MMN) in patients with obsessive compulsive disorder(OCD),depressiopn and anxiety.MEthods:Event-related potentials CNV,P300 and MMN were recorded in 31 patients with OCD by Nicolet SPirit Instrument,and were compared with that of 20 depression controls(DC) and 17 anxiety controls(AC)and 28 normal controls(NC),Results:A significant difference of CNV among 4 sulbject groups was found in both post-imperative negative variation(PINV) and amplitudes(M1)(P<0.01)(emergence of PINV were 45%),60%,35%,and 4% in OCD,DC,AC and NC groups respectively),Compared with NC group,DC and AC groups showed decreased M1 amplitude(P<0.01).A significant difference of P300 among 4 groups was found in both latencies(Cz/N2) and P3 and nontarget-P2 amplitudes(P<0.05-0.01),The delayed MMN latencies of OCD and DC were similar to that of P300 changes,Conclusions:CNV,P300 and MMN are useful tools for assessing the brain malfunction of OCD,DC and AC,and its clinical application are suggested.The characteristics ERPs of those patients might be useful indexes in distinguishing OCD from DC and AC patients.

运动员动作预期中错误监控的认知调节机制:来自行为与ERP的证据

目的:从错误监控视角探究运动员的动作预期错误监控与脑活动的认知调节机制。方法:40人[优秀组(一级篮球运动员)和新手组(非篮球专项的体育专业大学生)]观看不同判断时间点(出手阶段、上升阶段、高点阶段和下落阶段)和投篮结果(命中与未命中)的投篮视频,进行投篮结果预期及错误意识水平报告;同时记录并分析被试判断正确率、判断确信程度、P3、N400、ERN及Pe成分的潜伏期和峰波幅。结果:优秀组在投篮动作的早期阶段对命中情况的判断正确率更高,对未命中情况的判断正确率更低,判断确信程度与判断正确率呈正相关关系;优秀组的ERN峰波幅显著大于新手组,P3峰波幅有大于新手组的趋势,在未命中情况下的N400峰波幅更大,在命中情况下的Pe峰波幅更小。结论:1)运动经验可以提高运动员的错误监控能力,且优秀运动员的动作预期错误监控的时程表现在动作执行的早期阶段;2)优秀运动员的错误监控能力在行为特征和认知神经变化2个方面均显现出优势,且错误监控能力的强弱会影响动作预期的绩效;3)优秀运动员的错误监控行为可以调节运动经验对动作预期绩效的影响过程。

道德概念中的水平空间隐喻效应探究:来自行为和ERP的证据

道德的水平空间隐喻是以左右空间位置概念为始源域向以抽象道德概念为代表的目标域映射的过程。研究设置两个实验,采用空间Stroop范式分别从行为和认知神经层面对该效应进行探究。结果发现:(1)词汇类型与呈现方位之间的交互作用不显著。(2)一致条件(道德词出现在右侧或不道德词出现在左侧)和不一致条件(道德词出现在左侧或不道德词出现在右侧)下,脑电成分P300、N200和N400的激活程度均无显著差异。结果表明,汉语道德概念词中可能不存在水平空间隐喻效应,个体不会以左右位置为参照表征道德概念。

基于ERP信号的目标检测研究综述

目标检测是一个广泛应用于多个领域的研究课题。传统的计算机视觉方法存在复杂度高、泛化能力差、模型对象可迁移性差等缺点,而人脑在目标检测方面具有较强的认知能力和感知能力,仅需要很少的训练样本就可以达到较好的检测效果。基于事件相关电位(Event-Related Potentials,ERP)的脑机接口(Brain-Computer Interface,BCI)是一种全新的提升目标检测性能的方法,它能够将脑内信息与外部环境进行交互。在此基础上,Gerson提出了一种以脑电信号为基础的快速串行视觉呈现(Rapid Serial Visual Presentation,RSVP)范式,包括显示方式、有效视觉范围、目标复杂度、刺激频率和持续时长等。该文还对ERP信号的预处理、特征提取及分类等方法进行了综述,并对该领域的局限性和发展趋势进行了探讨。

Effects of different cue positions on evoked potentials in the cerebral cortex during global and local processing of compound stimuli A study of event-related potential

BACKGROUND： Previous studies of attentional control have focused primarily on pre-cue control of attentional cue and direction. OBJECTIVE： To measure the differences in electrical activity of brain cells while processing pre-cue and post-cue compound stimuli, and to explore brain electrical activity during global and local processing of compound stimuli according to electroencephalogram （EEG） recordings. DESIGN, TIME AND SETTING： A within-subject design study was performed at the School of Psychology, State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, China from March to May 2006. PARTICIPANTS： A total of 30 healthy, undergraduate students, aged 17-24 years, comprising 12 males and 18 females, were voluntarily enrolled from Beijing Normal University. Subjects exhibited normal or corrected-to-normal visual acuity. No significant non signal wave drift was detected during testing. METHODS： A total of 30 subjects were subjected to pre-cue and post-cue compound stimulus processing using event-related potential and EEG recordings. MAIN OUTCOME MEASURES： Evoked potential was recorded in different brain regions utilizing event-related potential to observe hemispheric symmetry, cue consistency and global-local features. RESULTS： Pre-cue compound stimuli resulted in hemispheric asymmetry for early wave （N1） and late wave （P3） in anterior brain regions. Early- and late-wave induced hemispheric asymmetry for electrode points （O1, 02, P3, P4, Pz, F3, F4, F7, F8, Fz, FP1, FP2, T7, TS, C3, C4, and Cz） during processing of pre-cue compound stimuli （P 〈 0.05）. Post-cue compound stimuli did not induce hemispheric asymmetry of brain waves induced by the above-described electrode points. No significant differences in global and local responses were determined during processing of post-cue compound stimuli. Under pre-cue conditions, significant differences were observed in N1 and P3 in the above-mentioned electrode points （P 〈 0.05）. However, under post-cue conditions, no significant differences were observed in N1 and P3 using the above-mentioned electrode points. Significant differences in early waves （N1 and P1） using the above-mentioned electrode points were detected between anterior and posterior brain regions, regardless of consistent or inconsistent, large or small letters （P 〈 0.05）. CONCLUSION： Cue location effected mechanisms underlying global and local processing of compound stimuli. Pre- or post-cue conditions resulted in differences in hemispheric symmetry, cue consistency, and global and local features. Under pre-cue conditions, hemispheric dominance was detected in global and local processing following compound stimuli. Under post-cue conditions, hemispheric dominance was not determined.

Mechanisms underlying syntactic and semantic processing of Chinese simple sentences Evidence from event-related brain potentials

This study sought to test the processing of three types of sentences in Chinese, as correct sentences, semantic violation sentences, and sentences containing semantic and syntactic violations, based on the following sentence pattern： ＂subject （noun） ＋ yi/gang/zheng ＋ predicate （verb）＂. Event-related potentials on the scalp were recorded using 32-channel electroencephalography. Compared with correct sentences, target words elicited an early left anterior negativity （N400） and a later positivity （P600） over frontal, central and temporal sites in sentences involving semantic violations. In addition, when sentences contained both semantic and syntactic violations, the target words elicited a greater N400 and P600 distributed in posterior brain areas. These results indicate that Chinese sentence comprehension involves covert grammar processes.

头颅CT灌注成像和ERP相关电位在症状性大脑中动脉狭窄支架置入术后并发认知功能障碍评估的价值

目的探讨头颅CT灌注成像和事件相关电位(ERP)在症状性大脑中动脉狭窄患者Neuroform EZ支架置入术后并发认知功能障碍评估的应用。方法选择2019年1月至2021年10月在邢台市第三医院收治的126例症状性大脑中动脉狭窄患者,其中男性94例,女性32例;年龄41~61岁,平均年龄51.18岁;汉族117例,其他民族9例;高血压18例,糖尿病20例,高血脂16例,心房颤动9例;饮酒史33例,吸烟史39例;文化程度初中及以下31例,中专或高中54例,大专及以上41例;身体质量指数21.60~28.50 kg/m^(2),平均身体质量指数24.63 kg/m^(2);术前大脑中动脉狭窄程度70%~80%61例,81%~99%65例;侧支循环通路93例(73.81%);患侧左侧73例,右侧53例。所有患者均行Neuroform EZ支架置入术,应用蒙特利尔认知评估量表,将患者分成认知功能障碍组(<26分)和正常组(≥26分)。比较两组患者头颅CT灌注成像[达峰值时间(TTP)、平均通过时间(MTT)、脑血流量(CBF)和脑血容量(CBV)]和ERP(P300潜伏期和波幅)等指标。单因素和Logistic回归分析确定认知功能障碍影响因素,受试者工作特性(ROC)曲线评估头颅CT灌注成像和ERP指标对认知功能障碍的诊断效能。结果126例患者手术均获得成功。术后12个月,根据蒙特利尔认知评估量表,将患者分成认知功能障碍组(<26分)36例和正常组(≥26分)90例。认知功能障碍组与正常组患者年龄、民族、高血压、糖尿病、高血脂、心房颤动、饮酒史、吸烟史、文化程度、身体质量指数、术前大脑中动脉狭窄程度、患侧和侧支循环通路等参数差异均无统计学有意义(χ^(2)/t=0.569、1.197、0.233、0.481、0.716、0.108、0.066、0.628、0.401、2.547、0.918、0.411、0.737,P=0.570、0.274、0.629、0.488、0.398、0.743、0.798、0.428、0.818、0.280、0.338、0.522、0.391>0.05)。认知功能障碍组CBF[(12.32±3.55)mL/(100 g·min)vs(22.42±2.47)mL/(100 g·min);t=15.625,P=0.000]和CBV[(0.81±0.21)mL/100 g vs(1.45±0.19)mL/100 g;t=16.571,P=0.000)]明显低于正常组。认知功能障碍组MTT[(7.89±0.58)s vs(3.62±0.55)s;t=38.761,P=0.000]和TTP[(19.87±2.86)s vs(11.32±3.02)s;t=14.570,P=0.000]明显高于正常组。术后12个月蒙特利尔认知评估量表评分与CBF、CBV和P300波幅成正相关(r=0.422、0.838、0.794,P=0.000);蒙特利尔认知评估量表评分与MTT、TTP和P300潜伏期成负相关(r=-0.949、-0.823、-0.750,P=0.000)。Logistic回归分析显示,CBF、CBV、MTT、TTP、P300潜伏期和P300波幅是认知功能障碍发生的影响因素(P<0.05)。ROC曲线可得,回归分析(联合诊断)AUC值最大,为0.895(95%可信区间0.827~0.979)。结论头颅CT灌注成像和ERP指标在症状性大脑中动脉狭窄术认知功能障碍患者中异常表达,且是认知功能障碍的影响因素,并可应用于预测和评估认知功能障碍。

Identification of a Novel Dynamic Red Blindness in Human by Event-related Brain Potentials

Dynamic color is an important carrier that takes information in some special occupations.However,up to the present,there are no available and objective tests to evaluate dynamic color processing.To investigate the characteristics of dynamic color processing,we adopted two patterns of visual stimulus called "onset-offset" which reflected static color stimuli and "sustained moving" without abrupt mode which reflected dynamic color stimuli to evoke event-related brain potentials (ERPs) in primary color amblyopia patients (abnormal group) and subjects with normal color recognition ability (normal group).ERPs were recorded by Neuroscan system.The results showed that in the normal group,ERPs in response to the dynamic red stimulus showed frontal positive amplitudes with a latency of about 180 ms,a negative peak at about 240 ms and a peak latency of the late positive potential (LPP) in a time window between 290 and 580 ms.In the abnormal group,ERPs in response to the dynamic red stimulus were fully lost and characterized by vanished amplitudes between 0 and 800 ms.No significant difference was noted in ERPs in response to the dynamic green and blue stimulus between the two groups (P】0.05).ERPs of the two groups in response to the static red,green and blue stimulus were not much different,showing a transient negative peak at about 170 ms and a peak latency of LPP in a time window between 350 and 650 ms.Our results first revealed that some subjects who were not identified as color blindness under static color recognition could not completely apperceive a sort of dynamic red stimulus by ERPs,which was called "dynamic red blindness".Furthermore,these results also indicated that low-frequency ERPs induced by "sustained moving" may be a good and new method to test dynamic color perception competence.

Relationships among Event-Related Potentials, Memory, and Schizophrenic Symptoms in College Students with Schizotypal-Traits

The present study investigated the relationships among event-related potentials (ERPs), memory, and schizophrenic symptoms in college students with schizotypal-traits. Scores on the Schizotypal Personality Questionnaire (SPQ) were used to categorize the participants into schizotypal-trait (n = 30) and normal control (n = 37) groups. ERPs were assessed using an auditory oddball paradigm, in which a series of standard tones (1000 Hz) and target tones (1500 Hz) were presented;participants were asked to count the number of presented target tones. The verbal memory and visual memory of the participants were evaluated using the Korean version of the California Verbal Learning Test (K-CVLT) and the Rey-Osterrieth Complex Figure Test (RCFT), respectively. The schizotypal-trait and control groups did not differ in terms of age, educational level, IQ score, accuracy on the auditory oddball task, or performance on the K-CVLT and RCFT measures. However, the schizotypal-trait group exhibited significantly smaller P300 amplitudes than the control group. Additionally, the P300 amplitudes measured at Cz and Pz were negatively correlated with the cognitive-perceptual factor scores on the SPQ. Thus, the present results indicate that reduced P300 amplitudes may represent a biological marker of schizophrenia.

STUDY ON EVENT RELATED POTENTIALS(P_(300))OF PATIENTS WITH VASCULAR DEMENTIA

目的:观察脑血管性痴呆(vascular dementia,VD)患者的听觉P300的变化特点以及与其认知功能的关系。方法:对30例VD患者和30名健康老年人(NC)应用Nicolet Bravo脑诱发电位仪进行事件相关电位P300检测;同时应用简易认知功能量表(MMSE)评估其认知功能。结果:VD组MMSE[(17.52±3.57)分]分值低于NC组[(26.57±1.43)分,(P<0.01)];与NC组相比,VD相P300中的P2、N2、P3潜伏期长,P2、P3波幅低,非靶P2波幅低(P<0.05-0.01);而VD组P300在三个脑区之间的差异无统计学意义(P<0.05);VD组P300中的P3波潜伏期与MMSE分值呈负相关(P<0.05-0.01)。结论:P300的变化可作评估VD患者认知功能缺损的有用指标。

言行不一?态度元认知视角下在线用户“隐私悖论”研究:ERPs证据

“隐私悖论”现象及其解释正成为正确认知在线用户真实隐私态度的障碍,厘清隐私态度和行为的真实关系有利于在线平台准确解读用户隐私需求,确保大数据企业的长远稳健发展。本文基于态度元认知理论,采用ERPs技术,研究引入权限敏感度、形象一致性和授权透明分别作为态度确定性、重要性的实验刺激变量,探讨用户真实隐私态度与即时披露行为的关系及内在认知机制。结果发现:权限敏感度通过中心路径负向影响用户隐私披露行为。形象一致性、授权透明度则通过边缘路径正向影响用户隐私披露行为。认知风格具有重要的调节作用,场依存个体比场独立个体更愿意披露隐私;与场独立个体相比,场依存个体在权限敏感度中的认知资源较多,诱发的P2成分更大;且场依存个体在形象不一致比形象一致时认知冲突更大,导致较大的N4成分;相比中心线索,边缘线索会产生更多注意力资源,进而对N1成分的影响显著。本研究厘清了隐私态度与隐私行为的真实关系,为“隐私悖论”的研究提供了新视角,可使企业深刻洞察在线用户真实隐私态度与反应,对于更好地保护用户隐私及改善其在线体验具有重要的参考价值。