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21.
Sommer R 《Journal of the history of the behavioral sciences》2007,43(3):305-313
Both of Thorstein Veblen's wives and another woman he loved had nervous breakdowns, while a fourth woman to whom he was emotionally very close committed suicide. Yet when Veblen published an article entitled "Dementia praecox," he did not mention his personal contact with serious mental disorder. This detachment is consistent with Veblen's approach to writing. Veblen considered himself to be a detached observer who wrote objectively about society rather than subjectively about himself. 相似文献
22.
Recent research suggests that emotion effects in word processing resemble those in other stimulus domains such as pictures or faces. The present study aims to provide more direct evidence for this notion by comparing emotion effects in word and face processing in a within-subject design. Event-related brain potentials (ERPs) were recorded as participants made decisions on the lexicality of emotionally positive, negative, and neutral German verbs or pseudowords, and on the integrity of intact happy, angry, and neutral faces or slightly distorted faces. Relative to neutral and negative stimuli both positive verbs and happy faces elicited posterior ERP negativities that were indistinguishable in scalp distribution and resembled the early posterior negativities reported by others. Importantly, these ERP modulations appeared at very different latencies. Therefore, it appears that similar brain systems reflect the decoding of both biological and symbolic emotional signals of positive valence, differing mainly in the speed of meaning access, which is more direct and faster for facial expressions than for words. 相似文献
23.
The emotional content of stimuli influences cognitive performance. In two experiments, we investigated the time course and
mechanisms of emotional influences on visual word processing in various tasks by recording event-related brain potentials
(ERPs). The stimuli were verbs of positive, negative, and neutral valence. In Experiment 1, where lexical decisions had to
be performed on single verbs, both positive and negative verbs were processed more quickly than neutral verbs and elicited
a distinct ERP component, starting around 370 msec. In Experiment 2, the verbs were embedded in a semantic context provided
by single nouns. Likewise, structural, lexical, and semantic decisions for positive verbs were accelerated, and an ERP effect
with a scalp distribution comparable to that in Experiment 1 now started about 200 msec earlier. These effects may signal
an automatic allocation of attentional resources to emotionally arousing words, since they were not modulated by different
task demands. In contrast, a later ERP effect of emotion was restricted to lexical and semantic decisions and, thus, appears
to indicate more elaborated, task-dependent processing of emotional words. 相似文献
24.
Practice effects on dual-task processing are of interest in current research because they may reveal the scope and limits of parallel task processing. Here we used onsets of the lateralized readiness potential (LRP), a time marker for the termination of response selection, to assess processing changes after five consecutive dual-task sessions with three stimulus onset asynchronies (SOAs) and priority on Task 1. Practice reduced reaction times in both tasks and the interference between tasks. As indicated by the LRP, the reduction of dual-task costs can be explained most parsimoniously by a shortening of the temporal demands of central bottleneck stages, without assuming parallel processing. However, the LRP also revealed a hitherto unreported early activation over the parietal scalp after practice in the short SOA condition, possibly indicating the isolation of stimulus-response translation from other central processing stages. In addition, further evidence was obtained from the LRP for a late motoric bottleneck, which is robust against practice. 相似文献
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28.
Fossella JA Sommer T Fan J Pfaff D Posner MI 《Mental retardation and developmental disabilities research reviews》2003,9(3):178-183
In humans, changes in brain structure and function can be measured non-invasively during postnatal development. In animals, advanced optical imaging measures can track the formation of synapses during learning and behavior. With the recent progress in these technologies, it is appropriate to begin to assess how the physiological processes of synapse, circuit, and neural network formation relate to the process of cognitive development. Of particular interest is the development of executive function, which develops more gradually in humans. One approach that has shown promise is molecular genetics. The completion of the human genome project and the human genome diversity project make it straightforward to ask whether variation in a particular gene correlates with variation in behavior, brain structure, brain activity, or all of the above. Strategies that unify the wealth of biochemical knowledge pertaining to synapse formation with the functional measures of brain structure and activity may lead to new insights in developmental cognitive psychology. 相似文献
29.
Hemispheric dominance in schizophrenics as determined on extrapyramidal side effects of neuroleptics
B Peth? P Taríska K Pintér E Sommer 《Psychiatrie, Neurologie, und medizinische Psychologie》1978,30(1):23-27
Phenomena observed during treatment with neuroleptics were clinically measured in an attempt to determine the difference in vulnerability of the two hemispheres and the relation between this difference and schizophrenic diseases. In the group of systematic schizophrenias the increase in tonus was significantly higher in the dominant hemisphere. This finding is considered a verification of the nosological hypothesis of schizophrenias. 相似文献
30.
This study examines Bandura's (1986, 1997a) propositions that self-efficacy provides information from which causal attributions are made and that causal attributions, in turn, influence formation of subsequent self-efficacy expectations. We developed a conceptual rationale for and empirically tested 2 sets of hypotheses pertaining to direct and reciprocal links between self-efficacy and causal attributions. Effects of causal attributions and subsequently formed self-efficacy on subsequent task performance were also investigated. Results support the existence of direct and reciprocal links between self-efficacy and causal attributions. We found interactive effects between self-efficacy and performance feedback on causal attributions, and a mediating effect of causal attributions on the formation of subsequent self-efficacy beliefs. Causal attributions and subsequent self-efficacy also significantly predicted subsequent performance. 相似文献