Brain and mind operational architectonics and man-made “machine” consciousness

To build a true conscious robot requires that a robot’s “brain” be capable of supporting the phenomenal consciousness as human’s brain enjoys. Operational Architectonics framework through exploration of the temporal structure of information flow and inter-area interactions within the network of functional neuronal populations [by examining topographic sharp transition processes in the scalp electroencephalogram (EEG) on the millisecond scale] reveals and describes the EEG architecture which is analogous to the architecture of the phenomenal world. This suggests that the task of creating the “machine” consciousness would require a machine implementation that can support the kind of hierarchical architecture found in EEG.

视觉掩蔽研究现状及展望

视觉掩蔽是指某个物体因另一在空间或时间上与其相邻的物体的呈现而导致可见度降低的现象。目前,掩蔽的研究集中于那些涉及到特征、目标和场景表征,注意控制机制,以及现象知觉有关的加工等。该综述主要介绍了视觉掩蔽的概念和范式,研究的典型现象及参数,并介绍了相关的神经科学研究,概述并评论了4类重要的视觉掩蔽理论模型：知觉修正、双通道、边界轮廓系统以及目标替换。最后讨论了目前视觉掩蔽研究遇到的一些困难和挑战,包括刺激与任务的不统一带来的影响、神经科学方法的局限性以及模型模拟的复杂性,并从神经意识相关、功能性观点与模型发展三方面对视觉掩蔽未来的研究方向进行了展望。     

Predicting anger in social anxiety: The mediating role of rumination

Anger and the way that anger is expressed have been linked to attrition and poorer treatment outcomes in patients with Social Anxiety Disorder (e.g., Erwin, B. A., Heimberg, R. G., Schneier, F. R. & Liebowitz, M. R. (2003). Anger experience and expression in social anxiety disorder: Pretreatment profile and predictors of attrition and response to cognitive-behavioral treatment. Behavior Therapy, 34, 331–350). Understanding the connection between social anxiety and anger may be one way to improve outcomes in this population. A cross-sectional regression design was used in a sample of 363 undergraduates to examine the suggestion that ruminative thought is a critical factor linking social anxiety to anger. In support of this hypothesis, brooding fully mediated the relationship between social anxiety and trait anger and partially mediated the relationship between social anxiety and outward anger expression. The relationship between brooding and anger suppression became non-significant after depression was controlled. In contrast, reflective pondering partially mediated the relationship between social anxiety and anger suppression. These results suggest that addressing rumination may be useful in the treatment of socially anxious patients who struggle with anger. They also support the utility of considering multiple forms of rumination and multiple anger outcomes in a single study.     

ENSEMBLE RECORDINGS IN AWAKE RATS: ACHIEVING BEHAVIORAL REGULARITY DURING MULTIMODAL STIMULUS PROCESSING AND DISCRIMINATIVE LEARNING

To meet an increasing need to examine the neurophysiological underpinnings of behavior in rats, we developed a behavioral system for studying sensory processing, attention and discrimination learning in rats while recording firing patterns of neurons in one or more brain areas of interest. Because neuronal activity is sensitive to variations in behavior which may confound the identification of neural correlates, a specific aim of the study was to allow rats to sample sensory stimuli under conditions of strong behavioral regularity. Our behavioral system allows multimodal stimulus presentation and is coupled to modules for delivering reinforcement, simultaneous monitoring of behavior and recording of ensembles of well isolated single neurons. Using training protocols for simple and compound discrimination, we validated the behavioral system with a group of 4 rats. Within these tasks, a majority of medial prefrontal neurons showed significant firing‐rate changes correlated to one or more trial events that could not be explained from significant variation in head position. Thus, ensemble recordings can be combined with discriminative learning tasks under conditions of strong behavioral regularity.     

Self-representationalism and phenomenology

To a first approximation, self-representationalism is the view that a mental state M is phenomenally conscious just in case M represents itself in the appropriate way. Proponents of self-representationalism seem to think that the phenomenology of ordinary conscious experience is on their side, but opponents seem to think the opposite. In this paper, I consider the phenomenological merits and demerits of self-representationalism. I argue that there is phenomenological evidence in favor of self-representationalism, and rather more confidently, that there is no phenomenological evidence against self-representationalism.

Hemispheric specialization for language according to grapho-phonemic transformation and gender. A divided visual field experiment

This behavioral study aimed at assessing the effect of two variables on the degree of hemispheric specialization for language. One of them was the grapho-phonemic translation (transformation) (letter-sound mapping) and the other was the participants’ gender. The experiment was conducted with healthy volunteers. A divided visual field procedure has been used to perform a phoneme detection task implying either regular (transparent) grapho-phonemic translation (letter-sound mapping consistency) or irregular (non-transparent) grapho-phonemic translation (letter-sound mapping inconsistency). Our results reveal a significant effect of grapho-phonemic translation on the degree of hemispheric dominance for language. The phoneme detection on items with transparent translation (TT) was performed faster than phoneme detection on items with non-transparent translation (NTT). This effect seems to be due to faster identification of TT than NTT when the items were presented in the left visual field (LVF)-right hemisphere (RH). There was no difference between TT and NTT for stimuli presented in the right visual field (RVF)-left hemisphere (LH). This result suggests that grapho-phonemic translation or the degree of transparency can affect the degree of hemispheric specialization, by modulating the right hemisphere activity. With respect to gender, male participants were significantly more lateralized than female participants but no interaction was observed between gender and degree of transparency.     

Biological perspectives on the effects of early psychosocial experience

There is much current interest in how adverse experiences early in life might affect certain elements of physiological, behavioral, and psychological functioning across the lifespan. Recent conceptual frameworks for studying the effects of early experience have involved constructs such as experience-expectant, experience-dependent, and experience-adaptive plasticity. The latter construct is related to comparative models of developmental programming which posit the persistence of biological adjustments to the early caregiving environment. We briefly review such models and their translational implications. We then turn to human development and focus on the effects of large changes in children’s life courses as tests of hypotheses related to early experience effects. In particular, the effect of early institutionalization on children’s brain and behavioral development after changes to adoptive families or foster care is used as an example of a research area in which programming hypotheses have been proposed.     

多目标追踪任务中不同运动方式非目标的抑制机制

采用多目标追踪范式结合点探测技术的方法, 考察视觉系统对不同运动方式(静止和规则运动)非目标的抑制机制。实验一将部分非目标设置为静止, 考察静止非目标的抑制机制; 实验二将部分非目标设置为规则运动, 以提高任务难度, 考察规则运动非目标的抑制机制。结果发现: (1) 实验一中静止非目标受到抑制, 抑制量与运动非目标没有差异; (2) 实验二中规则运动非目标受到抑制, 抑制量显著小于随机运动非目标; (3)综合两实验发现, 随着任务难度的提高, 只有随机运动非目标的抑制量显著增加, 而静止非目标与规则运动非目标的抑制量差异不显著。最后, 就视觉系统对不同运动方式非目标的抑制机制进行了讨论。     

期望、体验和回忆: 当消费者不能从体验中学习

人们对消费体验的期望、回忆与真实体验时常发生分离, 而且人们很少从真实体验中得到学习。本研究认为原因之一是期望、体验和回忆三者基于不同的输入信息, 以及三者特殊的交互关系。本研究首先提出了一个关于消费者期望、体验和回忆的理论框架, 系统阐述了消费者何时不能从体验中学习以及如何能促进学习, 然后在一个消费情景中通过3×2混合实验设计考察了三者的关系。实验比较了在“预期(无体验)”、“体验后即时评价”和“体验后延迟评价”三种评价方式下被试对两种品牌火腿肠的口味评价和偏好选择。结果发现: 消费者对口味体验的期望和回忆相似, 但两者都和真实体验发生分离。最后, 本研究还讨论了这一理论框架在消费者行为中的应用、未来研究拓展等。     

OAKESHOTT ON THE CHARACTER OF RELIGIOUS EXPERIENCE: NEED THERE BE A CONFLICT BETWEEN SCIENCE AND RELIGION?

Michael Oakeshott reflected on the character of religious experience in various writings throughout his life. In Experience and Its Modes (1933) he analyzed science as a distinctive “mode,” or account of experience as a whole, identifying those assumptions necessary for science to achieve its coherent account of experience in contrast to other modes of experience whose quests for coherence depend on different assumptions. Religious experience, he thought, was integral to the practical mode. The latter experiences the world as interminable tension between what is and what ought to be. The question, Is there a conflict between science and religion? is, in Oakeshott's approach, the question, Is there a conflict between the scientific mode of experience and the practical mode? Insofar as we tend to treat every question as a practical one, these questions seem to make sense. But Oakeshott's analysis leads to the view that scientific experience and religious experience are categorically different accounts of experience abstracted from the whole of experience. They are voices of experience that may speak to each other, but they are not ordered hierarchically. Nor can either absorb the other without insoluble contradictions.