认知重评和表达抑制情绪调节策略的脑网络分析：来自EEG和ERP的证据

本文旨在对认知重评和表达抑制两种常用情绪调节策略的自发脑网络特征及认知神经活动进行深入探讨。研究采集36名在校大学生的静息态和任务态脑电数据, 经过源定位和图论分析发现节点效率与两种情绪调节显著相关的脑区, 以及脑区之间的功能连接。研究结果表明, 在使用认知重评进行情绪调节时会激活前额叶皮质、前扣带回、顶叶、海马旁回和枕叶等多个脑区, 在使用表达抑制进行情绪调节时会激活前额叶皮质、顶叶、海马旁回、枕叶、颞叶和脑岛等多个脑区。因此, 这些脑区的节点效率或功能连接强度可能成为评估个体使用认知重评和表达抑制调节情绪效果的指标。     

Psychological functions of urban busdrivers exposed to exhaust gases: A cross sectional study of urban busdrivers in Denmark

Busdrivers are assumed to be exposed to air pollutants in the exhaust gases from other vehicles via the defroster system of the buses. A cross sectional study using questionnaires and psychological tests was conducted on 171 urban busdrivers from the three largest cities in Denmark (Copenhagen, Aarhus, and Odense). A group of 47 commuter train drivers, assumed to be exposed to air pollutants no more than the average citizen, was studied as referents. The air of the busdrivers' breathing zone was analysed for its content of toxic agents. The hygienic effect in the winter season was found to be 0.63 and in the summer season 0.36. The year mean hygienic effect was found to be 0.42. Neurastenic complaints such as difficulties of concentration, verbal retrieval, and tiredness were significantly more frequent among the busdrivers, particularly in the Copenhagen group. On psychological tests of verbal and spatial learning, retrieval and memory, psychomotor functions, visual perception, and vigilance, the Copenhagen busdrivers compared to the reference group only showed significant dysfunctions of verbal learning and long-term memory. The bus-drivers from the two smaller cities did not differ significantly from the reference group. It is suggested that the subjective complaints are due to psychosocial stressors in the busdrivers' condition of work, whereas the few differences in psychological test results may indicate a subclinical effect caused by the presence of neurotoxic agents in the busdrivers' working environment.     

Enacted and nonenacted encoding of social actions

Previous research has demonstrated that recall of enacted verbal commands is superior to recall of the same commands without enactment. The experiment reported explored whether the same effect would hold true in a social context as opposed to the non-social context used in previous research. The results demonstrated that this is indeed the case. Enacted verbal commands are better recalled than commands that are encoded verbally and better than commands that are encoded by means of observing them being performed. It was also demonstrated that items rated as having positive emotional value were better recalled than items rated as negative or neutral. This was true for enacted as well as for nonenacted commands. It is concluded that there is no basic difference between memory of commands enacted in the social context and memory of commands enacted in a non-social context. We discuss the data in relation to current theory of memory of actions.     

A new Swedish social attitude scale: Reliability and construct validity

The aim was to construct an updated and balanced version of a previous Swedish social attitude scale (Sidanius, 1976), and to assess the reliability and construct validity, employing a sample of 445 students, aged 14–17, from schools within metropolitan Stockholm. The results showed acceptable precision and internal consistency and reasonably high test-retest reliability for the scale as a whole. The a priori attitude domains (political-economic conservatism, religion, punitiveness, social inequality, ethnocentrism, and environment) were identified through use of confirmatory factor analysis. Most domains showed acceptable reliability. Differing results for the various age groups indicated that the present version of the scale should not be used among subjects below the age of 15.     

Encoding strategy and retroactive interference in short-term memory

Abstract.— The effect of encoding strategy upon retroactive interference in STM was studied. The subjects were presented two trigrams for retention with the Brown-Peterson method. In half the cases they were to recall both trigrams, in half to recall only the first. The results showed higher recall with the associative than with the rehearsal strategy. An increase in level of retroactive interference was found to increase number of retroactive interference errors in the rehearsal strategy condition and number of omissions in the associative strategy condition. The results were interpreted in terms of the memory trace integration hypothesis.     

Outline and description of an electronic system for lateralization of visual stumuli in studies of hemispheric asymmetry

An automatic electronic systenm for lateralization of visual stimuli research on hemispheric asymmetry is described. The system consists of three different units: 1) A stimulas projection- unit; 2)an electronic control-unit; and 3)a programming-unit. Necessary characteristics of apparatus for studies using lateralized visual stimuli are described in the paper. Among the listed requirements are: range of stimulus-duration, rise- and fall-time for onset and offset to full intensity of the stimulus, stimulus-eccentricity, and eye-fixation control. The system described in the paper has been in use in our laboratory for the last two years. It is concluded that the system meets the requirements for apparatus used in studies with laterlized visual input. A block-diagram of the electronics and a schematic outline according to scale of the stimulus projection-unit are enclosed with the paper.     

Sex differences in self-reported anxiety for different situations and modes of response

Abstract.— A review was made of recent studies employing different S-R inventories of anxiety and fear. The review pointed to the need for studies of sex differences for inventories where both situations and modes of response are selected separately. Such an analysis was made in the present study with regard to sex differences in both level and variability of self-reported anxiety for both total scores, factor scores, and single situation and response scales. The Ss were 116 adolescents, about 16 years of age. The inventory comprised 17 situations and 18 modes of response. With a few minor exceptions the analyses showed consistent sex differences throughout, with girls scoring higher than boys and showing greater interindividual variability in reported anxiety. Among other things, the results are discussed in relation to sex differences reported for physiological variables.     

Recall as a function of orienting task and retrieval cue

Abstract.— In an incidental learning experiment, a 40 word list with 4 words representing each of 10 taxonom-ic categories and beginning with each of 10 first letters was presented to 120 subjects. Half the subjects sorted the words according to category, half according to initial letter. After an interval of either 1 or 6 min, retention was measured with cued or free recall tests. The subjects in the Category sort-Category cue condition obtained higher recall than the subjects in the Category sort-Letter cue condition, whereas level of recall did not differ between the Letter sort-Letter cue and Letter sort-Category cue conditions. These results together with other results from the experiment were considered as arguments against the Encoding Specificity Principle but in favor of a theory separating encoding from retrieval.     

Some aspects on behavioral teratology research

A compelling question in teratology research is whether the experimental model used allows for extrapolation from laboratory animals to man. Our thesis is that behaviors that are biologically relevant for the animal are more likely to reveal the relationship between the behavior and its substrate than are non-specific behaviors. Applying this reasoning to the study of the ontogenesis of the behavior, we plead for including the use of species-typical behaviors in testing for teratogenic effects. Our further discussion is focussed upon the different levels at which an analysis of teratogenic effects may be carried out. At one level, the analysis is directed towards the behavioral effects of a given treatment; at another level to specify the function that is impaired by the treatment.