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341.
依据错误驱动的学习理论,行为预期结果与实际结果之间的不匹配即预期错误(Predictionerror,PE)是学习产生的驱动因素。作为显著性信息中的一种,预期错误和物理显著性、惊讶、新异性等存在信息加工阶段的不同,与记忆更新的关系也有差异。近年来,记忆再巩固干预范式(reconsolidation interference)被证明可用于人类条件性恐惧记忆的更新,其中记忆提取激活阶段所包含的预期错误起到了引发记忆“去稳定”、开启记忆再巩固的关键作用。在促进恐惧记忆更新的行为机制上,PE被认为是记忆去稳定的必要非充分条件。记忆提取必须包含适量的PE,但其引发的是记忆去稳定、消退还是中间状态,还需结合记忆本身性质确定。在促进恐惧记忆更新的神经机制上,杏仁核、导水管周围灰质(PAG)、海马均在PE探测和计算过程中具有重要作用;前额叶皮层(PFC)及其亚区在PE开启记忆再巩固过程中扮演了重要角色。上述过程又受到神经系统中特定神经递质的重要调节,尤其是多巴胺能和谷氨酸能。未来研究应进一步探索基于PE计算模型的量化研究,整合PE与其他边界条件的交互作用,考察不同类型显著性在记忆再巩固中的作用等;并亟... 相似文献
342.
探讨条件性恐惧大鼠内侧前额叶皮层边缘下区(IL区)Cdk5激酶活性、凋亡因子caspase-3表达和突触结构的变化。采用声音结合足底电击的方法对大鼠建立条件性恐惧模型后, 在不同时间点测定IL区Cdk5激活剂P35和P25的蛋白表达水平、Cdk5激酶活性、caspase-3的阳性细胞数, 并观察突触结构的变化。结果发现, 大鼠在条件性恐惧建立后第2、4和8天, IL区的P25蛋白表达和Cdk5激酶活性均明显高于正常; caspase-3的免疫反应阳性细胞数在3个时间点也均多于正常; 透射电镜下观察到:在恐惧建立后的第8天, IL区突触的突触后致密物质(PSD)厚度变薄, 在恐惧建立后第22天突触数密度减少、PSD厚度仍小于正常。推测条件性恐惧的建立, 使大鼠IL区的P25水平和Cdk5活性高于正常, 引起IL区的突触结构发生改变, 导致大鼠的恐惧反应持续存在。 相似文献
343.
ABSTRACT— The concept of psychopathy refers to a pattern of chronic antisocial behavior and personality features, such as emotional detachment, lovelessness, and guiltlessness, attributable in part to a temperament deficit. Historically, that deficit has been seen as a low reactivity to fear, but recent research has documented a second temperament deficit in adults that involves poor emotional and behavioral control. Both pathways are found in the child psychopathology literature, pointing to multifactorial developmental pathways from childhood to adult psychopathy. 相似文献
344.
Miguel Rodríguez Valverde Carmen Luciano Dermot Barnes‐Holmes 《Journal of the experimental analysis of behavior》2009,92(1):85-111
The present study investigates the transfer of aversively conditioned respondent elicitation through equivalence classes, using skin conductance as the measure of conditioning. The first experiment is an attempt to replicate Experiment 1 in Dougher, Augustson, Markham, Greenway, and Wulfert (1994), with different temporal parameters in the aversive conditioning procedure employed. Match‐to‐sample procedures were used to teach 17 participants two 4‐member equivalence classes. Then, one member of one class was paired with electric shock and one member of the other class was presented without shock. The remaining stimuli from each class were presented in transfer tests. Unlike the findings in the original study, transfer of conditioning was not achieved. In Experiment 2, similar procedures were used with 30 participants, although several modifications were introduced (formation of five‐member classes, direct conditioning with several elements of each class, random sequences of stimulus presentation in transfer tests, reversal in aversive conditioning contingencies). More than 80% of participants who had shown differential conditioning also showed the transfer of function effect. Moreover, this effect was replicated within subjects for 3 participants. This is the first demonstration of the transfer of aversive respondent elicitation through stimulus equivalence classes with the presentation of transfer test trials in random order. The latter prevents the possibility that transfer effects are an artefact of transfer test presentation order. 相似文献
345.
Andrés Moles 《Res Publica》2007,13(1):53-75
One of the strongest defences of free speech holds that autonomy requires the protection of speech. In this paper I examine
five conditions that autonomy must satisfy. I survey recent research in social psychology regarding automatic behaviour, and
a challenge to autonomy is articulated. I argue that a plausible strategy for neutralising some of the autonomy-threatening
automatic responses consists in avoiding the exposure to the environmental features that trigger them. If this is so, we can
good autonomy-based pro tanto reasons for controlling exposure to certain forms of speech.
Earlier drafts of this paper were presented in the 2005 Warwick Graduate Conference in Political theory, the 2005 ALSP Conference
at the University of Strathclyde, and the Discussion Group of Political Theory at Warwick University. I am grateful for the
many comments received on those occasions, especially to Peter Jones, Graham Long, Glen Newey, Fabienne Peter, Jonathan Seglow
and Will Smith. Two anonymous referees for Res Publica gave me helpful comments that benefited the argument defended here. Especial thanks are due to Matthew Clayton and Susan
Hurley who provided me with detailed written comments and fruitful discussion. 相似文献
346.
Joanne E. Taylor Frank P. Deane John Podd 《Journal of psychopathology and behavioral assessment》2007,29(2):81-91
This paper examines the clinical features, symptom severity, diagnostic profile, and help-seeking behaviour of a media-recruited
sample of driving-fearful women. Results support previous findings of the primary foci of fear as motor vehicle accidents
as well as specific driving situations and conditions. Consistent with prior research, there was difficulty relating the foci
of fear to current diagnostic concepts. Social concerns were identified as having a role in driving fear for some individuals.
Fearful participants exhibited high levels of fear and symptom severity according to various diagnostic and self-report measures,
although most reported that they would be unlikely to seek professional psychological help or driving instruction. Assessment
of cognitions indicated a range of errors likely to maintain anxiety and fear reactions that would be a target of treatment.
There were no group differences in number of major recent accidents, although fearful drivers learnt to drive later than controls,
suggesting early fearfulness.
相似文献
Joanne E. TaylorEmail: |
347.
David E. Conroy Miranda P. Kaye Angela M. Fifer 《Journal of Rational-Emotive & Cognitive-Behavior Therapy》2007,25(4):237-253
This study investigated links between three forms of perfectionism and beliefs associated with fear of failure (FF). College
students (N = 372) enrolled in physical activity classes completed the Multidimensional Perfectionism Scale and Performance Failure Appraisal
Inventory in a single session. After controlling for other forms of perfectionism, only socially prescribed perfectionism
(SPP) was strongly associated with beliefs that failure led to aversive interpersonal consequences (i.e., important others
losing interest, upsetting important others). Other-oriented perfectionism (OOP) exhibited a weak negative relation with beliefs
that failure would lead to devaluation of one’s self-estimate; individuals who held the highest standards for others’ behavior
had the weakest beliefs that failure would lead to them devaluing their self-estimate. Self-oriented perfectionism (SOP) was
not associated with any beliefs that failure led to aversive consequences; however, when SOP and OOP were simultaneously elevated,
they contributed positively to fears of experiencing shame and embarrassment (above and beyond main effects of SPP). Collectively
these findings indicated that FF was not ubiquitous with all forms of perfectionism because the specific beliefs about the
consequences of failure that underlie different forms of perfectionism varied tremendously.
This research was supported in part by a grant from the College of Health & Human Development, The Pennsylvania State University. 相似文献
348.
The present study explores driving skills in a group of 50 media-recruited driving-fearful and 50 control drivers, all of whom were women. Participants completed an on-road practical driving assessment with a professional driving instructor. Diagnostic as well as pre-post self-report and instructor driving assessments were conducted. Fearful drivers made more errors on the driving assessment than controls. However, the pattern of errors was identical for both groups, indicating that fear and anxiety may be associated with the number rather than the type of driving errors made. These differences remained when factors such as driving history, current driving frequency, and diagnosis were controlled using case selection. More research is needed to replicate the findings in more diverse samples. Additional work should also aim to clarify the specific role of driving skills in driving fear, which will facilitate treatment planning for exposure-based treatments and help identify cases where driving skills assessment may be appropriate. 相似文献
349.
Fear of Failure Biases Affective and Attentional Responses to Lexical and Pictorial Stimuli 总被引:1,自引:0,他引:1
Duley Aaron R. Conroy David E. Morris Katherine Wiley Jennifer Janelle Christopher M. 《Motivation and emotion》2005,29(1):1-17
The purpose of this investigation was to examine whether attentional biases would be noticed among individuals differing in levels of fear of failure (FF) as they viewed pictorial and lexical stimuli depicting various affective content. Indices of natural selective attention, namely, viewing time and self-reported affect, were assessed in 137 college students during free viewing picture and word presentation conditions. As hypothesized, FF was (a) negatively associated with self-reported dominance and valence for failure- and unpleasant-themed stimuli, and (b) positively associated with arousal ratings for unpleasant pictures. Although initially suppressed by neuroticism, partial correlation coefficients revealed a significant positive relationship between FF and viewing time for failure pictures. Results are discussed in the context of current theories of emotional reactivity and attentional biases pertaining to the nature of FF. Recommendations are provided for future research to elaborate the mechanisms involved in detrimental effects of FF. 相似文献
350.
In this study, we investigated the role of masculinity in men's affect intensity and men's fear of emotions. Men's masculine ideology and self-reported masculine gender role stress were assessed as cognitive and experiential factors of adherence to traditional masculine gender norms. Masculine ideology was negatively related to men's global affect intensity. However, on a 3-factor model of affect intensity, only negative reactivity was significantly related to masculine ideology. Both masculine ideology and masculine gender role stress were positively related to men's fear of emotions. Results are discussed in the context of theories of gender differences in emotion. 相似文献