文本表述结构对空间维度非线索更新的影响

采用实时窗口阅读技术,探讨阅读中文本表述结构在情境模型空间维度非线索更新中的作用。实验一结果表明,阅读中,如果文本叙述中采用以人为参照的描述方式,那么可以促进相应空间设置内物体的实时更新。实验二考察了空间设置不同程度的描述对空间信息加工中的影响,结果发现,相对于对空间设置的简单描述,在文本中对空间设置进行精细阐述更有利于情境模型空间维度非线索更新的达成。     

时间因素对空间维度非线索更新的影响

采用实时窗口阅读技术,探讨文本阅读中时间因素在情境模型空间维度非线索更新中的作用。被试阅读角色在空间转换中插入时间间隔的短文,并对其间的物体进行再认探测。结果表明,在文本叙述中,如果在角色空间位置转换之后,增添一定的时间间隔,则可以促进相应空间设置内物体的非线索更新,并且,不同的时间间隔所起的作用是不同的。     

记叙文中因果连贯对空间情境模型回溯建构的促进

采用移动窗口阅读技术探讨记叙文理解中因果关系对于空间信息加工的作用。实验1和2的自变量是故事中空间信息与故事结果的因果关系,采用相关样本t检验对不同条件下探测词的反应时进行统计分析,结果表明因果关系不仅会影响文本明确提及的空间信息的加工而且能够促进隐含的空间关系建构情境模型。实验3的自变量是故事中物体与位置词的空间关系,采用相关样本t检验对不同条件下位置探测词的反应时进行统计分析,结果进一步表明空间情境模型是读者为保持故事因果连贯回溯建构的而不是在阅读进程中的实时建构。实验4中空间关系的复杂程度增大,结果发现当故事中空间信息的文本距离较远时即使有保持因果连贯的需要,读者仍无法回溯建构空间模型。     

时序信息和空间信息在工作记忆中的分离存储

采用相对新近性判断范式（judgments of relative recency）,通过三个实验探讨了工作记忆中时序信息和空间信息的存储方式及其关系。实验一比较了有无空间线索两种条件下时序信息的记忆绩效,结果发现,有无空间线索并不影响对时序信．E-的记忆。实验二和实验三通过控制刺激呈现的视野范围和减少呈现位置的不确定性来利化空间线索,结果表明,时序信息的记忆绩效也不受空间线索的影响。由此推论,工作记忆中的时序信息和空间信息是分离编码存储的,加入空间线索并不能提高时序信息的记忆绩效。     

角色目标对空间维度非线索更新的影响

采用实时窗口阅读技术,探讨文本阅读中角色目标在情境模型空间维度非线索更新中的作用。实验一结果表明,阅读中。如果文本叙述中的角色在一个目标指引下展开活动．那么可以促进相应空间设置内的物体的更新。实验二考察了不同性质的角色目标在空问信息加工中的作用,结果发现,相对于已经达成的目标,未达成的目标对情境模型空间维度非线索更新的影响更大。     

虚拟场景中的信息类型对路径整合效率的影响

空间巡航中常采用路径整合进行位置追踪及方向更新,本研究利用返回起点任务,通过对虚拟场景中不同信息类型的设置,探讨地标、纹理、双线索（地标+纹理）及纯色条件下路径整合效率的差异。结果发现,除角度误差外,双线索条件下路径整合效率显著较高,其次是地标条件,纹理条件次之,纯色条件下表现最差。结果表明,不同信息类型下路径整合效率存在显著差异,且双视觉信息较单一视觉信息条件下的整合效率更优。     

虚拟场景中的信息类型对路径整合效率的影响

空间巡航中常采用路径整合进行位置追踪及方向更新,本研究利用返回起点任务,通过对虚拟场景中不同信息类型的设置,探讨地标、纹理、双线索（地标+纹理）及纯色条件下路径整合效率的差异。结果发现,除角度误差外,双线索条件下路径整合效率显著较高,其次是地标条件,纹理条件次之,纯色条件下表现最差。结果表明,不同信息类型下路径整合效率存在显著差异,且双视觉信息较单一视觉信息条件下的整合效率更优。     

线索的数量和联接性对返回抑制的影响

使用联接和离散的线索呈现方式比较了注意的易化效应和返回抑制的效果。实验一同时线索化3个外周位置,实验二同时线索化5个外周位置。结果表明：（1）在同时线索化3个位置的情境下,联接和离散这两种线索化方式均能产生返回抑制;（2）在同时线索化5个位置的情境下,联接条件仍能产生抑制效应,而离散条件没有产生。结果说明联接的方式让多个位置的线索被理解为一个线索,提示注意有“沿着物体弥散”的性质。     

视觉特征捆绑：基于时间同步还是基于相同空间位置？

通过操纵客体呈现的空间位置和时间顺序,来考察视觉特征捆绑是基于相同空间位置线索还是基于时间邻近线索。在两个实验中,给被试在固定的注视点位置（固定呈现条件）或在注视点上/下位置（变换呈现条件）快速地系列呈现刺激,记录靶子前后各两个时间位置（-2、-1、+1、+2）的错觉性结合（IC）率。结果发现,在固定呈现条件下,IC更多地出现在-1和+1的时间位置上;而在变换呈现条件下,错觉性结合更多地出现在-2和+2时间位置上。为了进一步排除特定实验范式的影响,在实验3中,我们采用特征分离范式,使被分离的刺激特征同时呈现在相同（相同位置同步）或不同（不同位置同步）的空间位置上。结果表明,这两种条件下的IC率无显著差异,这说明错觉性结合不受时间同步模式的影响。综上所述,来自三个实验的结果表明,时间范围内的特征捆绑机制是按空间位置,而不是按时间邻近,线索进行的：若特征的空间位置相同,时间邻近的特征才被捆绑起来;若空间位置不同,即使时间邻近的特征也不能被捆绑到一起。     

长时记忆中文本目标信息的激活机制

选取138名大学生被试,采用移动窗口实时阅读技术和探测技术,探讨文本理解过程中长时记忆的目标信息激活的机制。实验1探讨在中文条件下目标焦点是否也启动长时记忆中目标信息的整合。结果表明在目标实现的条件下,目标句1可以作为目标启动句,激活进入长时记忆中的目标信息。实验2和3探讨长时记忆中目标信息的激活是自然实现的还是需要目标愈合信号启动激活,实验结果表明长时记忆中目标信息的激活需要目标愈合信号的启动。该研究结果总的表明:阅读过程长时记忆中目标信息的激活不需要与当前阅读信息发生共振,目标愈合情境是影响长时记忆目标信息通达的关键因素。     

句子完成与时间缓冲对信息整合的启动作用

探讨句子完成和时间缓冲因素在阅读过程启动背景信息整合的作用。包括3个实验,被试是华南师范大学198名一年级本科生。采用移动窗口技术,要求被试阅读14篇一致性版本与不一致版本的文章,然后对不同条件下目标句阅读时间或探测反应时进行统计分析。实验1重复Guzman和Klin的研究,并进一步探讨单纯的句子完成因素是否能即时启动整合。结果表明,在单纯的句子完成条件下,一致版本和不一致版本的目标句阅读时间和探测反应时有显著差异,说明目标句阅读时已经即时启动了背景信息的整合。实验2探讨Guman和Klin关于缓冲可以即时启动整合的研究是否混合了句子完成因素的作用,结果表明,当在目标句后面增加连接词时,会产生句子完成的暗示,从而可以即时启动整合,Guzman和Klin关于缓冲可以启动整合的结果是值得商榷的。实验3从Guzman和Klin的研究设计中分离出句子完成因素,探讨单纯的时间缓冲是否可以即时启动整合,结果表明,单纯的缓冲不能即时启动整合。研究的结果初步证明,句子完成是启动信息整合的充分必要条件,而单纯的时间缓冲不能起到这种即时启动作用。     

Dynamic orientation cues decrease the viewpoint cost of mental rotation

Mental rotation, as a covert simulation of motor rotation, could benefit from spatial updating of object representations. We are interested in what kind of visual cue could trigger spatial updating. Three experiments were conducted to examine the effect of dynamic and static orientation cues on mental rotation, using a sequential matching task with three-dimensional novel objects presented in different views. Experiment 1 showed that a rotating orientation cue with constant speed reduced viewpoint costs in mental rotation. Experiment 2 extended this effect with a varied-speed rotating orientation cue. However, no such benefit was observed with a static orientation cue in Experiment 3. These findings indicated that a visually continuous orientation cue is sufficient to elicit spatial updating in mental rotation. Furthermore, there may be differences in the underlying mechanisms of spatial updating on the basis of constant-speed rotating cues and varied-speed rotating cues.     

Working Memory Updating: Load and Binding

In the present study, we aimed to examine how specific objects are updated in working memory. We compared conditions in which contents or content-context bindings from working memory were both encoded and updated (Experiment 1). In addition, for bindings, we manipulated the memory load (i.e., number of contents) to maintain during updating. Results indicated that memory load did not specifically affect the process; rather, the content-context binding (vs. single contents) was critical in determining the increase in response latencies. Results were replicated even in Experiment 2, in which we manipulated the spatial locations of the to-be-recognized probes. Results showed evidence of a potential dissociation between updating of memory contents-only and content-context bindings. In addition, memory load and spatial coherence between phases and probe recognition did not interact with updating performance. Overall, results were taken as a contribution toward mapping the complex nature of the updating mechanism.     

Content-context binding in verbal working memory updating: on-line and off-line effects

The role of content–context binding in working memory updating has received only marginal interest, despite its undoubted relevance for the updating process. In the classical updating paradigm, the main focus has been on the process of discarding information when new information is presented. Its efficacy has been determined by measurement of the accuracy of recalled, updated information. In the current study we measured the working memory updating process directly, employing a dynamic memory task composed of alternating sequences of learning, active maintenance and updating phases. Binding was manipulated by changing the type of updating (total or partial) and the strength of the perceptual connection between items. The on-line updating process and the off-line efficacy were separately analysed. Both on-line and off-line measures indicated that partial updating conditions, where the operation of updating content–context binding was required, were more demanding than both total updating conditions and memory and maintenance phases. Our results suggest that working memory updating can be identified not only as a process of substitution of information, but also as inhibition of no longer relevant information and, above all, as a binding updating.     

Updating objects in visual short-term memory is feature selective

The purpose of this study was to examine whether the process of updating information in visual short-term memory (VSTM) is object based. We investigated whether modifying the memory of one feature of an object would automatically promote refreshing the memory of all of its other features. The results showed that the facilitative effect of updating was specific to the updated feature of an object and did not spread to its nonupdated features. This feature-selective effect suggests that updating VSTM is not object based (Experiment 1), even though storage was object based (Experiment 2). Control experiments ruled out strategy-based (Experiment 3) and stimulus-related (Experiments 4–6) accounts. Feature-selective updating may indicate that the mechanism used to modify the contents of memory may have a different basis than that used to encode or store information in memory.     

Thinking outside the body: an advantage for spatial updating during imagined versus physical self-rotation

Three studies examined effects of different response measures on spatial updating during self-rotation. In Experiment 1, participants located objects in an array with a pointer after physical self-rotation, imagined self-rotation, and a rotation condition in which they ignored superfluous sensorimotor signals. In line with previous research, updating performance was found to be superior in the physical self-rotation condition compared with the other 2. In Experiment 2, participants performed in identical rotation movement conditions but located objects by verbal labeling rather than pointing. Within the verbal modality, an advantage for updating during imagined self-rotation was found. In Experiment 3, participants performed physical and imagined self-rotations only and used a pointing response offset from their physical reference frames. Performance was again superior during imagined self-rotations. The results suggest that it is not language processing per se that improves updating performance but rather a general reduction of the conflict between physical and projected egocentric reference frames.