From retinotopy to recognition: fMRI in human visual cortex

Recent advances in functional magnetic resonance imaging (fMRI) have furnished increasingly informative and accurate maps of the retinotopy and functional organization in human visual cortex. Here we review how information in those sensory-based maps is topographically related to, and influenced by, more cognitive visuo-spatial dimensions, such as mental imagery, spatial attention, repetition effects and size perception.     

Can clouds dance? Neural correlates of passive conceptual expansion using a metaphor processing task: Implications for creative cognition

Creativity has emerged in the focus of neurocognitive research in the past decade. However, a heterogeneous pattern of brain areas has been implicated as underpinning the neural correlates of creativity. One explanation for these divergent findings lies in the fact that creativity is not usually investigated in terms of its many underlying cognitive processes. The present fMRI study focuses on the neural correlates of conceptual expansion, a central component of all creative processes. The study aims to avoid pitfalls of previous fMRI studies on creativity by employing a novel paradigm. Participants were presented with phrases and made judgments regarding both the unusualness and the appropriateness of the stimuli, corresponding to the two defining criteria of creativity. According to their respective evaluation, three subject-determined experimental conditions were obtained. Phrases judged as both unusual and appropriate were classified as indicating conceptual expansion in participants. The findings reveal the involvement of frontal and temporal regions when engaging in passive conceptual expansion as opposed to the information processing of mere unusualness (novelty) or appropriateness (relevance). Taking this new experimental approach to uncover specific processes involved in creative cognition revealed that frontal and temporal regions known to be involved in semantic cognition and relational reasoning play a role in passive conceptual expansion. Adopting a different vantage point on the investigation of creativity would allow for critical advances in future research on this topic.     

没听到？“听”到！——来自听觉表象神经机制研究的证据

近年来听觉表象开始得到关注,相关研究包括言语声音、音乐声音、环境声音的听觉表象三类。本文梳理了认知神经科学领域对上述三种听觉表象所激活的脑区研究,比较了听觉表象和听觉对应脑区的异同,并展望了听觉表象未来的研究方向。     

Visual attention and its intimate links to spatial cognition

It is almost universal to regard attention as the facility that permits an agent, human or machine, to give priority processing resources to relevant stimuli while ignoring the irrelevant. The reality of how this might manifest itself throughout all the forms of perceptual and cognitive processes possessed by humans, however, is not as clear. Here, we examine this reality with a broad perspective in order to highlight the myriad ways that attentional processes impact both perception and cognition. The paper concludes by showing two real-world problems that exhibit sufficient complexity to illustrate the ways in which attention and cognition connect. These then point to new avenues of research that might illuminate the overall cognitive architecture of spatial cognition.     

Perception: The interface between cognition and the external world

In contrast to researchers who emphasize the distinction between perception and cognition it is claimed that the perceptual system is closely intertwined with cognition and with our comprehension of the external world. This claim is supported by evidence for two characteristic features of human information processing. One of these features is the use of mental models. If mental models are assumed to be anchored in the perceptual system it will not be necessary to assume a "little man in the head" who reads off the model. Moreover, perceptually based mental models will provide a referential semantics by anchoring mentally represented concepts in the external world. The other feature is the use of perceptually based perspectives in cognition, such as actor or observer perspectives in social cognition. It is concluded that human beings consistently interact within the real world--also when they are just thinking--and that this becomes possible via perceptual processes.     

A computational model of perception and action for cognitive robotics

Robots are increasingly expected to perform tasks in complex environments. To this end, engineers provide them with processing architectures that are based on models of human information processing. In contrast to traditional models, where information processing is typically set up in stages (i.e., from perception to cognition to action), it is increasingly acknowledged by psychologists and robot engineers that perception and action are parts of an interactive and integrated process. In this paper, we present HiTEC, a novel computational (cognitive) model that allows for direct interaction between perception and action as well as for cognitive control, demonstrated by task-related attentional influences. Simulation results show that key behavioral studies can be readily replicated. Three processing aspects of HiTEC are stressed for their importance for cognitive robotics: (1) ideomotor learning of action control, (2) the influence of task context and attention on perception, action planning, and learning, and (3) the interaction between perception and action planning. Implications for the design of cognitive robotics are discussed.     

The developing mind in action: measuring manual dynamics in childhood

Developmental theory has long emphasized the importance of linking perception, cognition, and action. Techniques designed to record the spatial and temporal characteristics of hand movements (i.e., manual dynamics) present new opportunities to study the nature of these links across development by providing a window into how perceptual, cognitive, and motoric processes interact and unfold over time. Although manual dynamics are commonly used to explore a range of topics with adults, including language processing, numerical cognition, social perception, and cognitive control, comparatively little research has used hand-tracking techniques to explore these topics with children. The current article aims to bring attention to this methodological gap and discuss how and why developmental researchers might want to address it. The article introduces two hand-tracking techniques, contrasts how the techniques have been used with adults relative to children, and explores how manual dynamics might fit into the broader landscape of research in child development.     

视觉表象可视化——视觉表象研究的新途径

功能磁共振技术在表象研究中得到广泛应用是表象研究追求客观化精确性的必然趋势。本文介绍了功能磁共振多变量模式分析方法及其演变历程,探讨了借助该方法实现“视觉表象可视化”的理论依据与亟待解决的关键问题。分析指出“视觉表象可视化”将为表象研究提供全新的研究视角与方法途径。     

从表征和认知过程上看表象与知觉、记忆的关系

表象、知觉和记忆是一个整合的认知系统。由于知觉和记忆提供了表象生成的材料,因而三者共享相似的表征,并激活广泛而相似的脑区。然而在认知加工过程上三者存在一定的差异。与知觉相比,表象的编码方式更抽象、更依赖过去经验的参与且处理细节能力更弱;与记忆相比,表象更容易受无关信息的干扰。未来对三者关系的研究应关注不同来源和不同类型的表象与知觉、记忆之间的关系,以及工作记忆在三者关系中所起的作用。     

类别空间关系加工系统和数量空间关系加工系统的分离 ——来自多领域的研究证据

Kosslyn认为人类的空间关系加工系统分为类别空间关系加工子系统和数量空间关系加工子系统,这两个子系统不仅存在功能上的分离,并且存在大脑神经水平的分离,这种神经水平的分离表现为两种空间关系加工的大脑半球偏向,即类别空间关系加工的左半球偏向与数量空间关系加工的右半球偏向。对两种空间关系加工的研究,涉及的领域从低水平的空间知觉,至表象、记忆、语言、行动及物体识别等,涉及的研究方法包括半视野速示法,神经网络模拟,PET, fMRI, ERP, rTMS,脑损伤病人的研究及比较动物研究。综合现有研究,虽然大多数研究中得到的脑半球偏向为两种加工子系统在神经水平的分离提供了证据,但不同研究中脑半球偏向的获得是相当不稳定的,并且受到研究方法因素的影响。尽管造成神经水平的分离似乎与大脑左右半球对具有不同感受野特征的神经元输出的偏向有一定的关系,但这仍需要进一步的研究证据     

生物运动及其在社会认知障碍研究中的应用

人类对生物运动具有较强的视觉敏感性,即使在视觉线索有限的情况下,仍能提取其中的社会性信息。本研究系统梳理了当前生物运动视知觉实验研究涉及的各类社会性信息,并归纳分析社会认知缺陷与生物运动视知觉加工之间的内在联系,以期促进对生物运动视知觉加工心理机制问题的深入探讨     

注意的跨文化研究及意义

Nisbett提出东西方文化差异可能导致了注意的差异,但是并没有对这种现象的原因和机制提出直接的证据.最近几年来,文化对注意过程的影响有了新的研究和发现,证实了Nisbett最初的观点是正确的.文化与注意的行为研究包括在整体与局部加工、场依存与场独立、变化盲等方面的研究.对于注意文化差异的潜在原因和机制,研究者们主要从发展性研究、ERP和FMRI研究等方面进行探讨.未来研究需要进一步探索文化对其它注意指标的影响、文化与注意的脑机制以及文化与注意的应用研究等等.     

The building blocks of social communication

In the present review, social communication will be discussed in the context of social cognition, and cold and hot cognition. The review presents research on prosody, processing of faces, multimodal processing of voice and face, and the impact of emotion on constructing semantic meaning. Since the focus of this mini review is on brain processes involved in these cognitive functions, the bulk of evidence presented will be from event related potential (ERP) studies as this methodology offers the best temporal resolution of cognitive events under study. The argument is made that social communication is accomplished via fast acting sensory processes and later, top down processes. Future directions both in terms of methodology and research questions are also discussed.     

Spatial representation of pitch height: the SMARC effect

Through the preferential pairing of response positions to pitch, here we show that the internal representation of pitch height is spatial in nature and affects performance, especially in musically trained participants, when response alternatives are either vertically or horizontally aligned. The finding that our cognitive system maps pitch height onto an internal representation of space, which in turn affects motor performance even when this perceptual attribute is irrelevant to the task, extends previous studies on auditory perception and suggests an interesting analogy between music perception and mathematical cognition. Both the basic elements of mathematical cognition (i.e. numbers) and the basic elements of musical cognition (i.e. pitches), appear to be mapped onto a mental spatial representation in a way that affects motor performance.     

人际互动中的“自我-他人”区分:多水平的探索

人际互动的根本问题在于我们如何在表征自身想法和感受的同时试图去理解他人的心理和情感状态, 以驾驭复杂的社交环境。最近研究发现个体主要通过模拟自我加工过程实现对他人的理解, 但这种自我加工以及心理模拟在一定程度上混淆了自我与他人。因此, 为进行成功的人际互动, 大脑必须灵活区分自我和他人相关的表征, 这种能力被称为“自我-他人”区分(self-other distinction, SOD)。通过探讨感知、动作、认知以及情感等不同加工水平社会认知过程中的“自我-他人”区分及相应的研究范式, 实现对人际互动过程更全面而深入的理解, 为改善社会认知、情感障碍以及自闭症的干预提供依据。在此基础上, 提出了具体的研究展望。     

Shedding light on brain function: the event-related optical signal

One of the basic goals of cognitive psychology is the analysis of the covert processes that occur between stimulus and response. In the past 20-30 years, the tools available to cognitive psychologists have been augmented by a number of imaging techniques for studying the 'brain in action' in a non-invasive manner. These techniques have their strength in either temporal or spatial information, but not both. We review here recent advances of a new approach, the event-related optical signal (EROS). This method allows measurements of the time course of neural activity in specific cortical structures, thus combining good spatial and temporal specificity. As an example, we show how EROS can be used to distinguish between serial and parallel models of information processing.     

“具身”涵义的理论辨析

“具身”是当代心理学和认知科学领域的热门话题, 其基本涵义是指认知对身体的依赖性。经典认知科学主张“非具身”, 认为认知是一种信息的表征与加工, 从本质上讲与承载它的身体无关。“弱具身”强调了认知对身体的依赖性, 但是却保留了认知的计算和表征功能。“强具身”则极力主张认知是被身体作用于世界的活动塑造出来的, 身体的特殊细节造就了认知的特殊性。在怎样理解“具身”方面, 存在着不同的解释。从本文作者的观点来看, 具身的性质和特征表现在4个方面：(1)身体参与了认知, 影响了思维、判断、态度和情绪等心智过程。(2)我们对于客观世界的知觉依赖于身体作用于世界的活动, 身体的活动影响着关于客观世界表象的形成。(3)意义源于身体, 抽象的意义有着身体感觉—运动系统的基础。(4)身体的不同倾向于造就不同的思维和认识方式。有关具身的研究将从理论和实践两个层面对心理学产生冲击。     

Single-trial EEG-fMRI reveals the dynamics of cognitive function

Two major non-invasive techniques in cognitive neuroscience, electroencephalography (EEG) and functional magnetic resonance imaging (fMRI), have complementary advantages with regard to their spatial and temporal resolution. Recent hardware and software developments have made it feasible to acquire EEG and fMRI data simultaneously. We emphasize the potential of simultaneous EEG and fMRI recordings to pursue new strategies in cognitive neuroimaging. Specifically, we propose that, by exploiting the combined spatiotemporal resolution of the methods, the integration of EEG and fMRI recordings on a single-trial level enables the rich temporal dynamics of information processing to be characterized within spatially well-defined neural networks.     

Change occurs when body meets environment: A review of the embodied nature of development

The purpose of this paper is to outline the challenges of psychological research in addressing the mechanisms of emergence: how new behavioral patterns and cognitive abilities arise from the interaction of an organism with its environment in real time. We review some of the empirical studies on infant development with reference to Dynamical Systems accounts and relevant views such as the ecological approach to perception and action, and cover topics ranging from early motor skills to goal‐directed locomotion and to higher cognitive development. The central claim is that the results of these studies are essentially related: they suggest that there is a fundamental connection among perception, motor behavior, and cognition. In addition, we recount our attempt to re‐enact the situatedness and temporal structure of the decision‐making processes of human infants by using an autonomous robotic device. We conclude by highlighting several insights from the broad spectrum of studies looking into the embodied nature of adaptive behavior. In our view, such studies are making a profound contribution to uncovering the emergent mechanisms of intellectual and bodily activity throughout development.