伏隔核和中脑腹侧被盖区内食欲素在吗啡奖赏中的作用

实验采用条件性位置偏爱（CPP）模型考察中脑腹侧被盖区（VTA）和伏隔核壳区（NAcSh）内食欲素（orexin）在吗啡奖赏中的作用。Wistar大鼠分为盐水训练组和吗啡训练组。3轮吗啡（或盐水）匹配训练前,双侧VTA或NAcSh内给予OXR1拮抗剂SB334867（VTA: 0, 1, 5μg;NAcSh: 0, 1, 3μg）;或2轮吗啡（或盐水）匹配训练前NAcSh内给予orexin A（0, 2, 4, 6μg）,观察其对吗啡CPP建立的影响。结果表明,VTA内给予SB334867抑制吗啡CPP建立,并存在剂量效应关系;NAcSh内给予SB334867或orexin A均未影响吗啡CPP建立,而orexin A可增加吗啡处理大鼠的运动性。以上结果表明,VTA和NAcSh内的orexin在吗啡奖赏中扮演的角色不同,可能调控成瘾行为的不同成分     

Semiotic aspects of the countertransference: Some observations on the concepts of the ‘immediate object’ and the ‘interpretant’ in the work of Charles S. Peirce1

The fi eld of semiotics, established by Charles S. Peirce, is characterised by its recognition of non‐linguistic signs and embedment in a communicative interaction; for this reason, it is especially well suited for a semiotic investigation of intersubjective processes. In this paper, the authors show how these intersubjective processes can be understood in semiotic terms within the transference‐countertransference setting. Based on a case vignette, the relationship between the ‘real object’ (e.g. an unconscious fantasy) and the sign (e.g. a particular facial expression) is fi rst demonstrated. In this mediation between sign and referent, an important role is played by the ‘immediate object’, by which Peirce understood the mental concept of a sign. However, a further component of the Peircian sign is responsible for the emergence of the countertransference, namely, the ‘interpretant’. The core of Peircian semiotics, namely the concept of an (infi nite) process of signifi cation, sheds light in semiotic terms on the dialectical movement between transference‐signs and countertransference‐signs, the interpretation and encounter between two subjects. The paper concludes with a discussion of both the interdisciplinary applicability of Peircian semiotics, for example in the context of the neurosciences, and the differences between the Peircian epistemological position and psychoanalytical conceptions of the objective cognition of mental processes.     

视觉词形加工：从脑区到神经通路

视觉词形加工是阅读机制中的重要环节。基于获得性阅读障碍的早期阅读“神经病学模型”对视觉词形加工的神经通路进行了描述。近年来,随着脑功能成像技术的发展和左梭状回中部视觉词形区的发现,研究者们对原有视觉词形加工的神经通路加以补充和修订,并提出了新的模型。该文对视觉词形加工障碍患者的神经心理学研究和正常人视觉词形加工的脑功能成像研究进行了总结,并讨论了研究的局限性,对今后该领域的发展方向进行展望     

视觉工作记忆在视觉搜索中的作用

视觉工作记忆在视觉搜索中的作用远比偏向竞争模型所描述的要复杂,个体能根据当前任务要求灵活地利用工作记忆来引导注意选择。在系统回顾已有研究的基础上,从客体工作记忆、空间工作记忆和执行工作记忆3个方面探讨了视觉工作记忆在视觉搜索中的作用。根据近期的研究,文章在最后对视觉工作记忆在视觉搜索中的作用做了7点总结,并对已往研究中存在的若干问题给予了解释,指出未来应该从前瞻记忆和内隐记忆等角度对视觉搜索中所涉及的视觉记忆进行深入研究     

Young infants' perception of unity and form in occlusion displays

Young infants have been reported to perceive the unity of a center-occluded object when the visible ends of the object are aligned and undergo common motion but not when the edges of the object are misaligned (Johnson & Aslin, 1996). Using a recognition-based paradigm, the authors investigated the possibility that past research failed to provide sufficiently sensitive assessments of infants' perception of the unity of misaligned edges in partial occlusion displays. Positive evidence was obtained in 4-month-olds for veridical perception of the motion and location of a hidden region but not its orientation, whereas 7-month-olds, in contrast to the younger infants, appeared to respond to the orientation of the hidden region. Overall, the results suggest that habituation designs tapping recognition processes may be particularly efficacious in revealing infants' perceptual organization. In addition, the findings provide corroborative evidence for the importance of both motion and orientation in young infants' object segregation and for the difficulty in achieving percepts of the global form of a partly occluded object.     

Rebirth fantasy and the psychoanalytic process

In this paper, Jungian and Freudian perspectives on the fantasy of rebirth are explored and a brief review of the literature on the theme is used to show how that the rebirth fantasy seems to be a universal fantasy in the human mind, connected with the experience of both destruction and creation. In the psychoanalytic process the rebirth fantasy is connected with initial hopes for a better life, but is also a vehicle for creating the analytic pair and for separating from the 'totalitarian object'. An account of clinical work with a patient is given to illustrate the mutual and parallel process of rebirth in both the patient and the therapist. For the patient, the therapy was experienced as an awakening or a birth. The therapist was initially doubtful about the patient's capacity to engage in the analytic process but his involvement and interest were 'born' during the early sessions, enabling the patient to rely on him to lead her out of the claustrophobic power of the totalitarian object.     

Understanding the weapon focus effect: The role of threat,unusualness, exposure duration,and scene complexity

We examined the role of exposure duration and scene complexity on the weapon focus effect (WFE). Memory for the mock crime was affected more by a weapon than an unusual but nonthreatening object. Threat reduced correct identifications when the event was short but not long; duration of the event did not interact with unusualness. Additionally, we found a WFE for target‐absent lineup decisions, but only for the accomplice lineup, not the object‐wielding perpetrator's lineup. We discuss the implications of these results for illuminating the mechanisms that elicit the WFE.     

Object Relations Theory and Technique Applied to Sex and Marital Therapy

This paper demonstrates integrating psychoanalysis and behavioral techniques in sexual and marital therapy. It particularly illustrates how Fairbairn's (1943) concept of the return of the repressed can help a couple reclaim lost unconscious parts of themselves, and extensive use of countertransference during sex and marital therapy.     

视觉工作记忆中的子系统

由于在预实验中发现记忆复合物体(multi—feature objects)时存在子系统优势,在本实验中,研究了记忆单特征物体(single—feature objects)时,是否存在子系统优势。被试为中国科学技术大学学生17人。要求被试记忆同样数目的单特征物体,条件1下物体属性相同,条件2下物体分属两种属性。通过正确率分析,条件2的成绩好于条件1。这个结果表明：单特征物体记忆时存在子系统优势。