传递性推理的ERP研究

以抽象的内容作为实验材料,测定15名大学生在完成三种不同类型的传递性推理任务和基线任务(记忆判断任务)时的事件相关电位(ERP),探讨传递性推理过程的脑内时程动态变化。研究发现,三种推理任务所诱发的波形基本一致,而推理任务与基线任务之间的ERP波形存在明显的差异。这说明对于传递性推理,被试可能是根据视觉的空间表征对信息进行加工的,结果进一步支持了心理模型理论。     

范畴三段论推理中信念偏差效应的ERP研究

以具体范畴三段论作为实验材料,探讨了推理过程中信念偏差效应的脑内时程动态变化。结果发现:有效式下,信念抑制和信念促进诱发的ERP波形趋于一致。无效式下,与基线任务相比,信念抑制和信念促进在300-500ms和1000-1600ms诱发了更正的ERP成分,可能反映了该推理不同的加工阶段,同时,300-600ms内,在大脑额中部信念抑制比信念促进诱发一个更正的ERP成分(P480),可能反映了关系整合阶段对自动激活的知识信念的抑制。     

关于条件推理的ERP研究

以抽象的条件命题作为实验材料,测定13名大学生在完成MP、AC、DA、MT推理（推测判断任务）和基线任务（记忆判断任务）时的事件相关电位（ERP）,初步探讨不同推理类型的脑内时程动态变化。这是使用ERP技术来研究条件推理脑机制的初步尝试。结果发现,五种任务所诱发的ERP早成分均不存在显著差异,在头皮前部的左外侧额区和左颞区,MP与DA推理与基线任务相比,均诱发一个更明显的晚期正成分（450-1100ms）,在右外侧额区则诱发一个更明显的晚期负成分（450~1100ms）;与之相反,MT与AC推理与基线任务相比,在左侧诱发一个更明显的晚期负成分（450~1100ms）,在右侧诱发一个更明显的晚期正成分（450~1100ms）,这一结果可能是由于左右脑在推理中的认知功能以及四种推理类型之间存在的差异所致,同时也表明推测过程主要激活了左右侧的前额部、颞叶等区域,基本支持Goel等人的双加工理论     

词语型类别属性归纳中分类与属性推理过程的时间特征

先前的研究中没有清晰分离类别属性归纳任务中分类过程与属性推理过程的ERP特征。本研究采用了事件相关电位技术(ERPs), 通过在词语型类别属性归纳任务的结论呈现阶段分开呈现结论类别和结论属性, 探讨了类别属性归纳中分类过程和属性推理过程的ERP特征。实验结果显示：在结论类别呈现阶段, 结论无关类别比结论关联类别诱发了更大的N400, 表明N400与类别属性归纳中的语义分类过程密切相关。在结论属性呈现阶段, 无论是在类别关联还是在类别无关条件下, 不一致属性比一致属性均诱发了更大的前部N2成分, 反映了属性知觉上的失匹配或规则的违背。随后, 在300~400 ms的时间窗口发现, 一致属性比不一致属性在前部脑区诱发了更大的类似于P3a的正偏转, 反映了对一致属性的更多关注。同时, 实验还发现, 当结论类别与前提类别关联时, 在300~400 ms的时间窗口, 一致属性比不一致属性在后部脑区也诱发了更大的类似于P3b的正偏转, 反映了推理预期的满意程度; 随后, 在400~600 ms的时间窗口, 不一致属性比一致属性在后部脑区诱发了更大的正偏转, 这与推理规则的违反相关。     

几何图形类比推理的ERP研究

该研究以几何图形作为实验材料,测定14名硕士研究生在完成两种类比推理任务（大小变化和颜色变化）和其基线任务时的事件相关电位（ERP）,探讨类比推理过程的脑内时程动态变化。研究发现,两种推理任务所诱发的波形基本一致,而推理任务与其基线任务之间的ERP波形存在显著差异,两种基线任务之间的ERP波形也存在显著差异;类比推理的加工过程是有阶段性的,即编码潍断、映射、得出结论,研究结果进一步支持了Sternberg的成分理论;推断和映射这两个类比推理所特有的加工阶段都有其对应的脑机制,图式推断阶段主要激活的是前额皮层和双侧的顶叶皮层,类比映射和调整阶段主要激活的是左半球的颞叶、额叶和中央顶。     

非临床抑郁个体内隐心境一致性记忆的意识加工和无意识加工的差异：一项ERP研究

以情绪面孔为刺激材料,采用改进的内隐知觉记忆测验任务,考察非临床抑郁个体在内隐心境一致性记忆的意识加工和无意识加工差异。结果发现：在150ms—200ms时间窗内隐记忆的无意识和意识加工过程存在重叠现象。在250ms—350ms时间窗个体就表现出了意识加工过程和无意识加工过程的分离现象,并且非临床抑郁组的无意识加工过程存在负性心境一致性记忆偏向。在400ms-800ms时间窗内,两组被试均表现出无意识加工过程中存在负性心境一致性记忆偏向。表明在250ms-350ms,非临床抑郁个体内隐记忆的无意识加工过程存在缺陷,表现出负性心境一致性记忆偏向。     

主题与类属关系的距离对分类和属性推理过程的影响：来自ERP的证据

不同关系类型对归纳推理具有重要的影响，然而主题关系（如，熊猫vs.竹子）与类属关系（如，熊猫vs.羚羊）在归纳推理中的神经机制仍然不清楚。本研究采用事件相关电位（ERP）技术，通过分开呈现属性归纳推理任务中的结论类别和结论属性，探讨两种关系类型及其距离在分类过程和属性推理过程中的ERP特征。结果发现：（1）结论类别呈现阶段，N400（370～500 ms）与LNC（the late negative component）（570～700 ms）时间窗口上，无论是主题关系还是类属关系，远距离比近距离均诱发了更大的负波；前者表明N400与语义整合密切相关，后者说明LNC与语义类别信息违背和假设形成有关。（2）结论属性呈现阶段，主题关系比类属关系诱发了更大的N1；同时，近距离比远距离诱发了更大的N1，反映了类别属性特征的知觉和自动化加工。结果表明：语义类别属性归纳存在距离效应，并且语义关系在属性推理过程中具有不同的加工方式。     

语法语境下汉语名动分离的ERP研究

运用ERP技术,从语法角度,通过词语搭配判断任务,考察汉语名词和动词加工的脑神经机制。实验结果显示,在适合的语法语境中,名词、动词和动名兼类词所诱发出ERP差异主要反应在P200、N400和P600三个ERP成分上。在正确的语境中,名词诱发出更大的P200,而动词则诱发出比名词更大的N400和减小的P600;当动名兼类词分别用作名词和动词时,虽然二者的N400没有显著差异,但前者诱发出一个增大的P600。根据实验结果认为：汉语名词和动词具有不同的神经表征和加工机制,名词和动词的语法功能在汉语名动分离中起了重要的作用     

传递性推理的认知与脑机制探讨

以抽象的内容作为实验材料,测定12名大学生在完成四种不同格式的传递性推理任务时的事件相关电位(ERP),探讨传递性推理过程的认知机制与脑内时程动态变化.结果发现,被试解决四种不同类型推理题目时的正确率和反应时差异均不显著;但是"谁最大"提问方式的正确率显著高于"谁最小"提问方式,另外,在任务类型①与④中"谁最大"提问方式的反应时显著短于"谁最小"提问方式.脑电数据结果表明,不同任务类型下,不同提问方式所诱发的ERP波形基本一致.空间表象模型与语言学模型都不能很好地解释以上结论,这似乎表明推理过程是很复杂的,人们往往会采用不同的信息加工策略来解决不同的推理问题,从而激活不同的大脑区域和神经通路.     

酝酿期有效提示和无效提示的比较

采用中国汉字谜,通过模拟wallas(1926)关于顿悟问题解决的四个阶段,探讨了酝酿期有效提示和无效提示对猜字谜的影响。结果发现：有效提示组被试比无效提示组猜对了更多的靶字谜,反应时也更短;在脑电水平上,酝酿期的有效提示谜比无效提示谜在左前额叶分别于300ms-400ms,400ms-600ms,600ms-800ms内引发了更大的P300-400成分、P400-600成分、P600-800成分。表明有效提示谜比无效提示谜对靶字谜问题的解决有更大促进作用。     

条件推理中否定前件下信念偏差发生阶段的ERP研究

以日常生活中的条件推理语句为实验材料,采用大、小前提和结论依次呈现的“推断-判断”范式,利用事件相关电位(event-related brain potential, ERP)技术探讨了条件推理中否定前件下信念偏差效应的脑内时程动态变化。结果发现：在行为反应上,较信念促进,信念阻碍下的正确率更低反应时更长;在脑电上,两条件(信念阻碍和信念促进)诱发的ERP波形仅在大前提加工阶段出现明显的分离。这表明该推理下的信念偏差效应可能早在对大前提的语义表征阶段就已发生。     

Working Memory Constraints on Linear Reasoning with Spatial and Temporal Contents

The present article reports two experiments testing the use of working memory components during reasoning with temporal and spatial relations in four-term series problems. In the first experiment four groups of subjects performed reasoning tasks with temporal and with spatial contents either without (control) or with a secondary task (articulatory suppression, visuospatial suppression or central executive suppression). The second experiment tested the secondary task effects in a within-subjects design either on problems with a spatial content or on problems with a temporal content, and within each content domain either under conditions of self-paced or of fixed presentation of the premises. Both experiments found effects of all three secondary tasks on reasoning accuracy. This supports the hypothesis that the subjects construct spatial representations of the premise information with the support of visuo-spatial resources of working memory. The second experiment also showed that during premise intake, only visuo-spatial and central executive secondary tasks had an effect. The implications of the data for the working memory requirements of reasoning and for theories of linear reasoning are discussed.     

ERP characteristics of sentential inductive reasoning in time and frequency domains

Earlier studies have examined the issues of brain spatial localization in human sentential inductive reasoning using PET/fMRI. However, the temporal characteristics of such reasoning remain unclear. In our present study, we have used ERP (Event-related Potential) to further study human inductive reasoning involving sentential tasks. For congruent induction tasks, in which premises and conclusions are related, participants need to synthesize semantic information from the premises, conclusions, as well as background knowledge, while for incongruent induction tasks (baseline), in which premises and conclusions are unrelated, participants can respond “no” immediately. Behavioral data have been obtained that is consistent with expectations. ERPs imply that participants may integrate semantic information within the time window of 350–650 ms. Statistical analysis in the frequency domain has revealed a significant increase in the power of the gamma band (30–50 Hz) for congruent induction tasks in contrast to incongruent induction tasks.     

Syllogistic reasoning tasks and working memory: Evidence from sequential presentation of premises

An experiment is reported concerning the role of working memory components in syllogistic reasoning. In this study, the syllogistic premises were presented sequentially and subjects attempted the syllogisms with and without three secondary tasks (articulatory suppression; spatial suppression and verbal random generation). Taking account of possible trade-offs among the dual tasks, it appeared that syllogisms with sequentially presented premises markedly loaded the central executive and the phonological loop components of working memory and also showed an involvement of the visuo-spatial scratchpad. It appears that the “slave” systems of working memory were more heavily loaded when sequential presentation of premises was used than was found previously with simultaneous premise presentation (Gilhooly, Logie, Wetherick & Wynn, 1993).     

Syllogistic reasoning tasks and working memory: Evidence from sequential presentation of premises

An experiment is reported concerning the role of working memory components in syllogistic reasoning. In this study, the syllogistic premises were presented sequentially and subjects attempted the syllogisms with and without three secondary tasks (articulatory suppression; spatial suppression and verbal random generation). Taking account of possible trade-offs among the dual tasks, it appeared that syllogisms with sequentially presented premises markedly loaded the central executive and the phonological loop components of working memory and also showed an involvement of the visuo-spatial scratchpad. It appears that the “slave” systems of working memory were more heavily loaded when sequential presentation of premises was used than was found previously with simultaneous premise presentation (Gilhooly, Logie, Wetherick & Wynn, 1993).     

Conditional reasoning with a spatial content requires visuo-spatial working memory

In previous research, Toms, Morris, and Ward (1993) have shown that conditional reasoning is impaired by a concurrent task calling on executive functions but not by concurrent tasks that load on the slave systems of the working memory system as conceptualised by Baddeley and Hitch (1974). The present article replicates and extends this previous work by studying problems based on spatial as well as nonspatial relations. In the study 42 participants solved 16 types of spatial or nonspatial problems, both in a single-task condition and under concurrent matrix tapping, a task loading the visuo-spatial sketch pad. The findings were consistent with those of Toms et al. (1993) for problems with a nonspatial content. However, when the content was spatial, and only then, a dual-task impairment was observed: processing time of the first premise was lengthened, especially for problems with negations in the antecedent term, the consequent term, or both; moreover, the number of correctly solved problems with negations in both terms was smaller. The implications of these findings for the mental models theory and the mental logic theory are discussed.     

双特征空间客体捆绑关系的存储机制——来自ERP的证据

利用事件相关电位技术(ERPs),采用延迟匹配任务的实验范式,测查了16名正常被试完成位置客体、方向客体和位置—方向捆绑客体的工作记忆诱发的皮层慢电位。实验发现:在第1个客体呈现后的300ms到600ms之间,在顶叶皮层(CP5、P7、P3),位置客体、方向客体比捆绑客体诱发了一个更负的成分; 在右额(F4、FC6、FC2、F8)、右后颞(TP10)、左颞(T7)、左后颞(TP9)等脑区,捆绑客体比单一特征客体诱发出了一个更正的成分; 在800至1400ms的慢波成分上,位置和方向捆绑客体在F4、FC6和F8三个记录点诱发的波形比单一特征客体的波形波幅更正。右侧前额叶参与了客体整合表征的存储,该结果支持了情景缓冲器的假设。     

反应与刺激冲突的脑机制差异:来自ERP研究的证据

采用事件相关电位技术(ERP),用侧抑制任务探讨了刺激和反应冲突的脑内时程动态变化。行为数据表明,冲突条件的反应时显著长于无冲突条件,表现出明显的干扰效应;脑电数据表明,在300-450ms内,反应冲突比无冲突诱发了一个更负的ERP成分(N300-450),主要分布于额顶部,偶极子溯源分析发现,这一负成分可能主要源于ACC;而刺激冲突与无冲突相比在350-450ms内,也诱发了一个更负的ERP成分(N350-450),该负成分可能主要源于丘脑附近。这一结果表明,刺激与反应冲突所涉及的大脑机制可能并不相同。     

Information processing and reasoning with premises that are empirically false: Interference,working memory,and processing speed

In this study, we looked at the contributions of individual differences in susceptibility to interference and working memory to logical reasoning with premises that were empirically false (i.e., not necessarily true). A total of 97 university students were given a sentence completion task for which a subset of stimuli was designed to generate inappropriate semantic activation that interfered with the correct response, a measure of working memory capacity, and a series of logical reasoning tasks with premises that were not always true. The results indicate that susceptibility to interference, as measured by the error rate on the relevant subset of the sentence completion task, and working memory independently account for variation in reasoning performance. The participants who made more errors in the relevant portion of the sentence completion task also showed more empirical intrusions in the deductive reasoning task, even when the effects of working memory were partialed out. Working memory capacity was more clearly related to processes involved in generating uncertainty responses to inferences for which there was no certain conclusion. A comparison of the results of this study with studies of children's reasoning suggests that adults are capable of more selective executive processes than are children. An analysis of latency measures on the sentence completion task indicated that high working memory participants who made no errors on the sentence completion task used a strategy that involved slower processing speed, as compared with participants with similar levels of working memory who did make errors. In contrast, low working memory participants who made no errors on the sentence completion task had relatively shorter reaction times than did comparable participants who did make errors.