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101.
Piotr Majdak Matthew J. Goupell Bernhard Laback 《Attention, perception & psychophysics》2010,72(2):454-469
The ability to localize sound sources in three-dimensional space was tested in humans. In Experiment 1, naive subjects listened to noises filtered with subject-specific head-related transfer functions. The tested conditions included the pointing method (head or manual pointing) and the visual environment (VE; darkness or virtual VE). The localization performance was not significantly different between the pointing methods. The virtual VE significantly improved the horizontal precision and reduced the number of front-back confusions. These results show the benefit of using a virtual VE in sound localization tasks. In Experiment 2, subjects were provided with sound localization training. Over the course of training, the performance improved for all subjects, with the largest improvements occurring during the first 400 trials. The improvements beyond the first 400 trials were smaller. After the training, there was still no significant effect of pointing method, showing that the choice of either head- or manual-pointing method plays a minor role in sound localization performance. The results of Experiment 2 reinforce the importance of perceptual training for at least 400 trials in sound localization studies. 相似文献
102.
In two experiments, we studied the temporal dynamics of feature integration with auditory (Experiment 1) and audiovisual (Experiment 2) stimuli and manual responses. Consistent with previous observations, performance was better when the second of two consecutive stimuli shared all or none of the features of the first, rather than when only one of the features overlapped. Comparable partial-overlap costs were obtained for combinations of stimulus features and responses. These effects decreased systematically with increasing time between the two stimulus-and-response events, and the decreased rate was comparable for unimodal and multimodal bindings. General effect size reflected the degree of task relevance of the dimension or modality of the respective feature, but the effects of relevance and of temporal delay did not interact. This suggests that the processing of stimuli on task-relevant sensory modalities and feature dimensions is facilitated by task-specific attentional sets, whereas the temporal dynamics might reflect that bindings “decay” or become more difficult to access over time. 相似文献
103.
Mass R Moll B Hölldorfer M Wiedemann K Richter-Appelt H Dahme B Wolf K 《Scandinavian journal of psychology》2008,49(3):293-298
This study examined the relationship between PMS and emotion-related electromyographic facial activity at different phases of the menstrual cycle. Twenty-four women of reproductive age (12 with PMS, 12 controls) participated in two EMG sessions (T1 and T2) in which they were shown photographic images that can elicit various emotions (IAPS stimuli). T1 took place in the follicular phase, T2 in the luteal phase. The activity of the musculus depressor anguli oris ("depressor", expression of sadness) was measured. Depressor activity was compared to activity of musculus orbicularis oculi ("orbicularis"; expression of joy). ANOVA yielded a significant increase of the activity of the depressor at T2 in the PMS group. The PMS group showed more frequent depressor activity during the luteal than the follicular phase. Orbicularis activity did not change from T1 to T2. Conclusions: The PMS group experienced various visual stimuli in a more depressed way during the luteal phase. 相似文献
104.
Prospective and positive mental imagery deficits in dysphoria 总被引:1,自引:0,他引:1
We know less about positive mental imagery than we do about negative mental imagery in depression. This study examined the relationship between depressed mood and the subjective experience of emotion in imagined events; specifically, prospective imagery, and imagery in response to emotionally ambiguous stimuli. One hundred and twenty-six undergraduates completed measures of depression, imagery vividness for future events, and a homograph interpretation task in which they generated images and subsequently rated image pleasantness and vividness. As predicted, compared to low dysphoria, high dysphoria was associated with poorer ability to vividly imagine positive (but not negative) future events. These findings were augmented by the observation that high dysphorics provided lower pleasantness ratings of images generated in response to homographs they interpreted as positive. We suggest that an imbalance in the inability to vividly imagine positive but not negative future events may curtail the ability of high dysphorics to be optimistic. High dysphoric individuals are further disadvantaged: even when they interpret ambiguity positively, the resulting images they generate are associated with less positive affect. Therapeutic strategies that address both such positive-specific imagery biases hold promise for depression treatment innovation. 相似文献
105.
Similarity is used as an explanatory construct throughout psychology and multidimensional scaling (MDS) is the most popular way to assess similarity. In MDS, similarity is intimately connected to the idea of a geometric representation of stimuli in a perceptual space. Whilst connecting similarity and closeness of stimuli in a geometric representation may be intuitively plausible, Tversky and Gati [Tversky, A., & Gati, I. (1982). Similarity, separability, and the triangle inequality. Psychological Review, 89(2), 123-154] have reported data which are inconsistent with the usual geometric representations that are based on segmental additivity. We show that similarity measures based on Shepard’s universal law of generalization [Shepard, R. N. (1987). Toward a universal law of generalization for psychologica science. Science, 237(4820), 1317-1323] lead to an inner product representation in a reproducing kernel Hilbert space. In such a space stimuli are represented by their similarity to all other stimuli. This representation, based on Shepard’s law, has a natural metric that does not have additive segments whilst still retaining the intuitive notion of connecting similarity and distance between stimuli. Furthermore, this representation has the psychologically appealing property that the distance between stimuli is bounded. 相似文献
106.
人民监督员制度体现出对检察权力有效制衡的宪政理念.通过合理界定监督权的性质和范围,有助于解决监督权同检察权依法独立行使之间的冲突,保障人权,维护司法公正.健全完善的人民监督员制度对实现监督权同检察权的良性互动起到积极的促进作用. 相似文献
107.
Forensic psychiatry is concerned with the relationship between psychiatric abnormalities and legal violations and crimes. Due to the lack of available biological criteria, evaluation and therapy in forensic psychiatry have so far been restricted to psychosocial and mental criteria of offenders' personalities. Recent advances in neurosciences allow a closer approach to the neural correlates of personality, moral judgments and decision-making. We propose to discuss the introduction of biological criteria in the field of forensic psychiatry and to establish rules as to what extent such biological criteria will be a better and more reliable choice in judging mentally ill criminals by using all available information that can be obtained by biological means. Psychosocial and subjective criteria in forensic evaluation will be more and more accomplished by biopsychosocial and objective criteria. The responsibility of having committed a criminal act will no longer be exclusively defined by judging free and voluntary decision-making, but rather by brain-behavior relationships. What is often referred to as psychosocially determined mental processes thus could be complemented by estimating the degree of biopsychosocially determined neural processes. We conclude that such a process could contribute to a paradigm shift in forensic psychiatry, which will have profound implications for offenders, forensic psychologists and psychiatrists, the law and society in general. 相似文献
108.
Prof. Dr. Bernhard Strauss 《Psychotherapeut》2008,53(4):245-253
Health is of high value. Therefore, an effective and efficient care is a widely accepted societal objective. Correspondingly, health service research in general and for the psychosocial area in particular receives increasing attention from politics, health and pension insurance companies and professional organisations. These stakeholders promote health service research with considerable financial means. The various promotional programs are described and their implications are discussed. The relationship between content, purposes and methodology for the definition of research in health care is clarified. Finally, current research questions are exemplified by five key topics. 相似文献
109.
This research examined the psychophysiology of emotional arousal anticipatory to potentially aversive and highly pleasant outcomes. Human brain reactions (event-related potentials) and body reactions (heart rate, skin conductance, the probe startle reflex) were assessed along motivational gradients determined by apparent distance from sites of potential punishment or reward. A predator-prey survival context was simulated using cues that signaled possible money rewards or possible losses; the cues appeared to loom progressively closer to the viewer, until a final step when a rapid key response could ensure reward or avoid a punishing loss. The observed anticipatory response patterns of heightened vigilance and physiological mobilization are consistent with the view that the physiology of emotion is founded on action dispositions that evolved in mammals to facilitate survival by dealing with threats or capturing life-sustaining rewards. 相似文献
110.
Bernhard Waldenfels 《Continental Philosophy Review》2008,41(2):127-142
Feelings not only have a place, they also have a time. Today, one can speak of a multifaceted renaissance of feelings. This concerns philosophy itself, particularly, ethics. Every law-based morality comes up against its limits when morals cease to be only a question of legitimation and begin to be a question of motivation, since motives get no foothold without the feeling of self and feeling of the alien. As it is treated by various social theories and psychoanalysis, the self is not formed through the mere acquisition or change of roles, but rather through a process that is susceptible to crises, a process shaped by affective bonds and separations. Learning, which is the theme of pedagogy, loses its hold whenever it is confronted by disinterest and listlessness. In neurobiology, the increased significance of those zones of the brain that are connected with the realization of feelings makes the brain, accordingly, no mere apparatus that processes data, but a living organ that selects and “evaluates” what is “important.” Finally, cross-cultural comparison shows the extent to which the one-sided preference for understanding and willing, which is the mark of Western rationalism, arises from a typical, not to mention a highly masculine attitude toward the world and life, as many different studies on gender difference stress (In reference to this perspective, see Seethaler, Gefühle und Urteilskraft. Ein Plädoyer für die emotionale Vernunft, 1997). The following reflections provide a historical orientation directed toward a new determination of feelings. This new determination of feelings is phenomenological and takes the pathetic character of experience, nourished by the corporeality of experience as its point of departure. 相似文献