首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
The eyes have it!: an fMRI investigation   总被引:5,自引:0,他引:5  
For the past several years it has been thought that cues, such as eye direction, can trigger reflexive shifts in attention because of their biological relevance and their specialized neural architecture. However, very recently, reported that other stimuli, such as arrows, trigger reflexive shifts in attention in a manner that is behaviourally identical to those triggered by eyes. Nevertheless these authors speculated that reflexive orienting to gaze direction may be subserved by a neural system-the superior temporal sulcus (STS)-that is specialized for processing eyes. The present study presents fMRI data that provide direct and compelling empirical support to this proposal. Subjects were presented with fixation stimuli that, based on instruction, could be perceived as eyes or as another type of directional cue. Both produced equivalent shifts in reflexive attention, replicating Ristic et al. However, the neural systems subserving the two forms of orienting were not equivalent-with the STS being engaged exceptionally when the fixation stimulus was perceived as eyes.  相似文献   

2.
Visual search studies with adults have shown that stimuli that contain a unique perceptual feature pop out from dissimilar distractors and are unaffected by the number of distractors. Studies with very young infants have suggested that they too might exhibit pop-out. However, infant studies have used paradigms in which pop-out is measured in seconds or minutes, whereas in adults pop-out occurs in milliseconds. In addition, with the previous infant paradigms the effects from higher cognitive processes such as memory cannot be separated from pop-out and selective attention. Consequently, whether infants exhibit the phenomenon of pop-out and have selective attention mechanisms as found in adults is not clear. This study was an initial attempt to design a paradigm that would provide a comparable measure between infants and adults, thereby allowing a more accurate determination of the developmental course of pop-out and selective attention mechanisms. To this end, we measured 3-month-olds' and adults' saccade latencies to visual arrays that contained either a + among Ls (target-present) or all Ls (target-absent) with set sizes of 1, 3, 5 or 8 items. In Experiment 1, infants' saccade latencies remained unchanged in the target-present conditions as set size increased, whereas their saccade latencies increased linearly in the target-absent conditions as set size increased. In Experiment 2, adults' saccade latencies in the target-present and target-absent conditions showed the same pattern as the infants. The only difference between the infants and adults was that the infants' saccade latencies were slower in every condition. These results indicate that infants do exhibit pop-out on a millisecond scale, that it is unaffected by the number of distractors, and likely have similar functioning selective attention mechanisms. Moreover, the results indicate that eye movement latencies are a more comparable and accurate measure for assessing the phenomenon of pop-out and underlying attentional mechanisms in infants.  相似文献   

3.
Dziurawiec S  Deregowski JB 《Perception》2002,31(11):1313-1322
Previous work with non-human species has shown that eyespots function as sign stimuli for defensive behaviour. But it is unknown to what extent eyespots are a dominant feature of objects for human perceptual responses. We examined whether young children perceive eyespots as a dominant object feature. One hundred and nineteen children from the first, second, and third grades were presented with small manikins, called "Joopes" that varied in the number, type, and arrangement of facial features. Four kinds of Joope heads were used: single element (eyes, mouth, or beak only), monovalent (spatially concordant eyes and mouth, or eyes and beak), ambivalent (asymmetrical eyes and beak, or eyes and mouth), and cyclopean (single eye with orthogonal beak). Two task groups (Peepers and Gobs) 'helped' the Joopes to either 'see' their food or 'eat' it, by placing food in one of 24 feeding dishes. Results indicated that responses made to the ambivalent Joopes differed, with greater 'drift' shown by the 'eating' group towards the 'seeing' responses than by the 'seeing' group towards the 'eating' responses. The dominant role of eyespots was thus confirmed for children in the second and third grades, but response inconsistencies in the youngest group suggested difficulties in handling incongruent stimuli. The implications of these results for understanding basic perceptual processes are discussed.  相似文献   

4.
5.
According to research on the cross-race effect, through experience, observers learn which diagnostic facial features are important for recognizing same-race compared to cross-race faces. These diagnostic facial features differ across racial groups; whereas the upper facial region is more diagnostic for White faces, the lower facial region is more diagnostic for Black faces. We tested how disguises at encoding (sunglasses [upper region] or bandana [lower region]) affect White and Black observers’ recognition memory for White and Black faces. We found that disguises override the diagnosticity of race-specific regions and have similar effects on recognition of same- and cross-race faces. Relative to no disguise, recognition memory was impaired more by disguising upper (sunglasses) than lower (bandana) facial regions. This supports the hypothesis that facial features trump race-specific diagnostic regions, and the eye region provides relatively more diagnostic information than lower facial features.  相似文献   

6.
Several tachistoscopic visual half-field experiments using exposure times in excess of 150 msec have been reported and arguments have been put forth justifying this procedure. An experiment was done investigating visual field accuracy under conditions where eye movement was allowed, following parafoveal exposure. Two control experiments were done to evaluate the viewing conditions. When eye movement is permitted, accuracy in both visual fields reaches 100%. It is concluded that visual field differences found with exposure times greater than 150 msec are due to the active cooperation of the subjects and not due to the justifications advanced by experimenters using long exposure times.  相似文献   

7.
Assessing coping strategies: a theoretically based approach   总被引:83,自引:0,他引:83  
We developed a multidimensional coping inventory to assess the different ways in which people respond to stress. Five scales (of four items each) measure conceptually distinct aspects of problem-focused coping (active coping, planning, suppression of competing activities, restraint coping, seeking of instrumental social support); five scales measure aspects of what might be viewed as emotional-focused coping (seeking of emotional social support, positive reinterpretation, acceptance, denial, turning to religion); and three scales measure coping responses that arguably are less useful (focus on and venting of emotions, behavioral disengagement, mental disengagement). Study 1 reports the development of scale items. Study 2 reports correlations between the various coping scales and several theoretically relevant personality measures in an effort to provide preliminary information about the inventory's convergent and discriminant validity. Study 3 uses the inventory to assess coping responses among a group of undergraduates who were attempting to cope with a specific stressful episode. This study also allowed an initial examination of associations between dispositional and situational coping tendencies.  相似文献   

8.
Normal subjects were presented with a simple line drawing of a face looking left, right, or straight ahead. A target letter F or T then appeared to the left or the right of the face. All subjects participated in target detection, localization, and identification response conditions. Although subjects were told that the line drawing’s gaze direction (the cue) did not predict where the target would occur, response time in all three conditions was reliably faster when gaze was toward versus away from the target. This study provides evidence for covert, reflexive orienting to peripheral locations in response to uninformative gaze shifts presented at fixation. The implications for theories of social attention and visual orienting are discussed, and the brain mechanisms that may underlie this phenomenon are considered.  相似文献   

9.
Facial expressions frequently involve multiple individual facial actions. How do facial actions combine to create emotionally meaningful expressions? Infants produce positive and negative facial expressions at a range of intensities. It may be that a given facial action can index the intensity of both positive (smiles) and negative (cry-face) expressions. Objective, automated measurements of facial action intensity were paired with continuous ratings of emotional valence to investigate this possibility. Degree of eye constriction (the Duchenne marker) and mouth opening were each uniquely associated with smile intensity and, independently, with cry-face intensity. In addition, degree of eye constriction and mouth opening were each unique predictors of emotion valence ratings. Eye constriction and mouth opening index the intensity of both positive and negative infant facial expressions, suggesting parsimony in the early communication of emotion.  相似文献   

10.
Applying the person-oriented approach to coping can provide a unique perspective by revealing typical latent patterns. The study examined typical latent patterns shown by task-, emotion- and avoidance-oriented trait-based coping styles. We performed secondary analyses with Latent Profile Analysis on our former data and three independent datasets containing coping measures with the CISS-48 scale (Endler & Parker, 1994). Gender differences were also studied. Two basic profiles seem universal: the first is characterized by a high level of task-oriented coping, and the second profile is with moderately high scores on all three coping styles. The finding indicates that two fundamental latent coping profiles exist, which suggests a within-subject comparison in practice instead of investigating the absolute value of coping styles. Comparing data before and after 2020, COVID-19 does not seem to affect these profiles. The person-centered approach provides a possibility for the integration of coping-related findings.  相似文献   

11.
Uncertainty is a fundamental aspect of human social life. Based on fruitful findings, the current review aims to establish a schema that outlines the relationship between uncertainty and human social decision-making: the influences of uncertainty on social decision-making (mainly prosocial behaviors) and the strategies commonly employed to reduce social uncertainty. Human prosocial behaviors are modulated by both social and nonsocial uncertainty. Specifically, uncertainty decreases prosocial behaviors by providing moral wiggling room or promoting loss aversion but also helps maintain relationships by mitigating negative interactions. Moreover, impression formation, impression updating, and compliance with social norms are crucial strategies for coping with social uncertainty, but they are subject to various biases. Finally, we highlight some important issues that need to be addressed in future studies. In summary, the current review deepens our understanding of the role of uncertainty in social behaviors.  相似文献   

12.
The ability of preschool children to discriminate age, and their use of information from different facial areas in this task, was investigated. Most 4-year-olds were able to rank sets of seven facial photographs into age order successfully. Subsequently, they were presented with facial stimuli in which different regions of the face were masked out. Masking of the eyes produced a marked performance decrement, and masking of the nose and cheeks a slight decrement, relative to masking of either the mouth and chin, or of the hair and neck. Possible explanations of the results are discussed, together with the verbal comments of the children on the cues they were aware of using.  相似文献   

13.
The objectives of this study are: (1) to describe virtues, character strengths and coping strategies of college students; (2) to analyze the relationship between virtues, character strengths and coping strategies; and (3) to evaluate the predictive relationship between virtues and coping strategies. Ninety-one college students (98 % females), aged between 19 and 42 years (M = 23.5; SD = 4.0), completed questionnaires VIA Inventory of Strengths, and Coping Responses Inventory-Adult. Strong positive correlations were found between the six virtues and three coping strategies. Specifically, Wisdom presented a positive correlation with behavioral and cognitive approach coping. Sixteen strengths presented positive correlations with behavioral approach coping strategies and four strengths presented positive correlations with cognitive approach coping. Wisdom described 23 % of the variance in cognitive-approach coping, and Transcendence together with Temperance described 33.5 % of the variance in behavioral approach coping. We conclude that the college setting offers a rich opportunity for further studies of these relationships.  相似文献   

14.
This study examined for whom and under what circumstances emotional-approach coping and problem-focused coping are differentially more effective. Eighty-nine participants identified a current stressful situation and then were randomly assigned to either: (a) write for 15 minutes about their feelings (emotional-approach coping); or (b) write about how to solve their problem (problem-focused coping). Participants also completed a self-report measure that assessed how they coped during the two weeks after the exercise. Coping effectiveness was assessed by measuring positive affect, negative affect, and physical symptoms. Dimensions of emotional processing (e.g., clarity and attention to emotions) were assessed using self-report. Gender, type of stressful event (interpersonal vs. achievement), and individual differences in emotional processing moderated the effect of type of coping on positive affect.  相似文献   

15.
Crossmodal linkage between the olfactory and visual senses is still largely underexplored. In this study, we investigated crossmodal olfactory-visual associations by testing whether and how visual processing of objects is affected by the presence of olfactory cues. To this end, we explored the influence of prior learned associations between an odour (eg odour of orange) and a visual stimulus naturally associated with that odour (picture of orange) on the movements of the eyes over a complex scene. Participants were asked to freely explore a photograph containing an odour-related visual cue embedded among other objects while being exposed to the corresponding odour (subjects were unaware of the presence of the odour). Eye movements were recorded to analyse the order and distribution of fixations on each object of the scene. Our data show that the odour-related visual cue was explored faster and for a shorter time in the presence of the congruent odour. These findings suggest that odours can affect visual processing by attracting attention to the possible odour source and by facilitating its identification.  相似文献   

16.

Although coping has become one of the central constructs in the area of research on life events, emotions, and health, it is yet not clear how to conceptualize coping in the most powerful way. Coping instruments often lack a clear underlying theory or are confounded with the stress process itself. Therefore, a theoretical as well as empirical framework is needed. The study at hand presents cross-sectional data from a German version of a coping scale that is constructed in line with the Strategic Approach to Coping Scale (SACS) developed by Hobfoll et al. The German scale findings support those of the original, US version, but also indicate potential cultural distinction. The findings suggest that the GSACS is theory syntonic and has potential for elaborating coping research.  相似文献   

17.
Exposure to terrorism seriously threatens the well-being of children and adolescents. Israeli citizens have witnessed massive ongoing terrorist attacks during the last few years. The present research, conducted among 330 Israeli adolescents, examined coping strategies in relation to terrorist attacks. We found that adolescents utilize more productive than non-productive coping strategies when dealing with terrorist attacks. Moreover, they rarely seek professional help. Male adolescents use more non-productive coping strategies and female adolescents seek more social support as a coping strategy. The impact of exposure to media reports and life satisfaction on adolescents' use of coping strategies is discussed, and potentially effective approaches to coping with terrorist attacks are proposed.  相似文献   

18.
Whether people cope differently with negative events at different ages was assessed by relation to age by type of situation perceived as potentially stressful and by type of coping strategy used, and also whether the kind of coping strategy used to reduce the potential stressor was related to type of stressor. To do this the factor structure of the Spanish version of the Ways of Coping Checklist of Lazarus and Folkman was examined in an Argentine sample of 153. The factor analysis of checklist scores identified five factors: Cognitive redefinition, Problem focus, Seeking social support, Wishful thinking, and Avoidance. For two groups, ages 20 to 24 and 40 to 45 years, analysis indicated a significant association of type of situation perceived as potentially stressful with age. The middle-age group (40-45 yr.) chose a way of coping in problem solution but the young adult group (20-24 yr.) seemed more often to elude problems. It appears that the type of stressor influences type of coping.  相似文献   

19.
It is well known that advertising and branding co-opts counter culture to sell commodities, but in this article we uncover the ontological conditions for such an appropriation. We investigate a particular example of contemporary advertising, the Levis commercial “Legacy – Now is our Time“ (2011), which was subsequently pulled because of the British riots of that year, as a historical situated and saturated moment. This article employs Benjamin's notion of the phantasmagoria to uncover the messianic possibilities of a future hidden in the cynicism of the image, and Freud’s essay on ‘The Uncanny’ to suggest the particular temporal structure of this future as a repetition of an absolute past. Such an example of advertising and branding is situated within the overall theory of subjectification of late capitalism, where the dominate concept of capital is human capital (biopolitics), and in which capital is directly parasitical on creativity and life.  相似文献   

20.
The present study describes the construction and validation of a new scale for measuring coping strategies entitled the Coping Styles Questionnaire (CSQ). Earlier studies had suggested that there were three primary coping components: task, emotion, and avoidance. In part, the validation of the CSQ confirmed these results, extracting factors concerned with problem-solving (Rational Coping, RATCOP), emotion (Emotional Coping, EMCOP) and avoidance (Avoidance Coping, AVCOP). However, a new factor was uncovered which tapped distancing or detachment (Detached Coping, DETCOP). Subsequent analyses suggested a grouping of two adaptive (RATCOP and DETCOP) and two maladaptive (EMCOP and AVCOP) coping styles, which was confirmed by the concurrent validation of the scale using the Emotional Control Questionnaire.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号