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排序方式: 共有169条查询结果,搜索用时 15 毫秒
41.
42.
Our lab recently found evidence that efficient visual search (with a fixed target) is characterized by logarithmic Reaction Time (RT) × Set Size functions whose steepness is modulated by the similarity between target and distractors. To determine whether this pattern of results was based on low-level visual factors uncontrolled by previous experiments, we minimized the possibility of crowding effects in the display, compensated for the cortical magnification factor by magnifying search items based on their eccentricity, and compared search performance on such displays to performance on displays without magnification compensation. In both cases, the RT × Set Size functions were found to be logarithmic, and the modulation of the log slopes by target–distractor similarity was replicated. Consistent with previous results in the literature, cortical magnification compensation eliminated most target eccentricity effects. We conclude that the log functions and their modulation by target–distractor similarity relations reflect a parallel exhaustive processing architecture for early vision. 相似文献
43.
Wan X Voss M Lleras A 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2011,18(5):562-576
Young and older adults indentified the shape of a color oddball in a visual search task, and both showed faster and more accurate responses when the distractor color was passively viewed in the preceding target-absent trial than when the target color was previewed. This inter-trial effect, known as the distractor previewing effect (DPE), reflects an attentional bias that prevents attention from focusing on recently inspected features that failed to produce a target. The results showed that the DPE pattern was preserved across the lifespan, and that the age-related increase in the magnitude of the DPE appeared rooted in age-related slowing, suggesting substantial sparing of this inhibitory effect in old age. 相似文献
44.
A perceptually filled-in surface, such as occurs during sustained attention to a peripheral stimulus (Troxler fading), can be functionally equivalent to a physically presented stimulus. Observers failed to detect probes that were presented in the location of a filled-in surface that had the same surface attributes as the probes; this was true even though, physically, the probes contrasted with the background. Probe stimuli with surface characteristics different from those of the filled-in surface were detected more often, though not quite as often as when there was no filled-in surface. Together, these findings support the idea that there are two components in perceptual filling: a neural filling-in component and a sustained-attention component, which actively suppresses perceptual processing at the filled-in location. More broadly, they illustrate the interplay of basic visual mechanisms in the creation and representation of visual surfaces and in the coding and detection of changes to these surfaces. 相似文献
45.
Thomas LE Ambinder MS Hsieh B Levinthal B Crowell JA Irwin DE Kramer AF Lleras A Simons DJ Wang RF 《Psychonomic bulletin & review》2006,13(5):891-895
Inhibition of return (IOR) has long been viewed as a foraging facilitator in visual search. We investigated the contribution
of IOR in a task that approximates natural foraging more closely than typical visual search tasks. Participants in a fully
immersive virtual reality environment manually searched an array of leaves for a hidden piece of fruit, using a wand to select
and examine each leaf location. Search was slower than in typical IOR paradigms, taking seconds instead of a few hundred milliseconds.
Participants also made a speeded response when they detected a flashing leaf that either was or was not in a previously searched
location. Responses were slower when the flashing leaf was in a previously searched location than when it was in an unvisited
location. These results generalize IOR to an approximation of a naturalistic visual search setting and support the hypothesis
that IOR can facilitate foraging. The experiment also constitutes the first use of a fully immersive virtual reality display
in the study of IOR. 相似文献
46.
van Nooten J Oh H Pierce B Koning FJ Jadad AR 《The journal of pastoral care & counseling : JPCC》2006,60(4):387-394
A systematic review was undertaken of the literature on the use of the Internet and other information and communication technologies (ICT's) in the provision and support of religious and spiritual care in healthcare. Indexes such as Medline, PsychoINFO and Proquest Religion were searched. The review found little systematic study of the effectiveness of the Internet and other ICT's in religious and spiritual care. It is believed that the results of this review provide a basis for promise spiri care in the further explora of the potential and of ICT's for tual healthcare. 相似文献
47.
López-Rousseau A 《Psychological science》2005,16(6):426-428
Abstract-After the airplane attacks of September 11, 2001, in the United States, many Americans drove instead of flying, to avoid the risk of terrorism. As a result, there were extra car accidents in which many people died. This study tested whether a similar effect occurred in Spain after the train bombings of March 11, 2004, in Madrid. Data on train travel, highway traffic, and fatal highway accidents were analyzed for the months immediately following March 11. Results show that, like Americans, Spaniards avoided the dread risk of terror attacks, but unlike Americans, they did not confront the death risk of fatal accidents instead. A sociopolitical interpretation for these findings is offered. 相似文献
48.
Alejandro J. Estudillo Jasmine Kar Wye Lee Neil Mennie Edwin Burns 《Applied cognitive psychology》2020,34(1):270-276
The other-race effect (ORE) reflects poor recognition of faces of a different race to one's own. According to the expertise-individuation hypothesis, this phenomenon is a consequence of limited experience with other-race faces. Thus, similar experience with own and other-race faces should abolish the ORE. This study explores the ORE in a multi-racial country (i.e., Malaysia) by comparing Malaysian observers' face recognition for faces of a predominant racial group in Malaysia (i.e., Chinese) with faces from an uncommon group (i.e., Caucasian). Malaysian Chinese, Malays, and Malaysian Indians completed the Cambridge Face Memory Test (CFMT) and the CFMT-Chinese. Compared with the normative scores, Malaysian observers showed poor performance in the CFMT-Caucasian. Interestingly, Malays and Malaysian Indians observers' performance was identical to that of Malaysian Chinese in the CFMT-Chinese and to the normative scores of the test. These results demonstrate the relevance of experience in shaping the ORE. 相似文献
49.
Drawing upon Job Demands-Resources (JD-R) theory, most research on hindrance demands has focused on the antecedent role of work engagement. However, no studies have analysed the potential effects of hindrance demands as moderators in the engagement-job satisfaction link. The objective of this study was to examine the moderator effect of role stressors (conflict and ambiguity) as hindrance demands in the relationship between work engagement and job satisfaction in a Spanish working sample. The sample was composed of 634 Spanish workers from different Southern service organizations. Hierarchical multiple regression results showed that the association between work engagement and job satisfaction decreased when role stress (particularly ambiguity) increased. These results underline the need to clarify goals, specify norms about work and member roles in organizations and determine the deleterious effect of hindrance demands even in engaged workers. 相似文献
50.
Moyaho A Valencia J 《Journal of comparative psychology (Washington, D.C. : 1983)》2002,116(3):263-269
The authors studied grooming and yawning caused by mild stress in laboratory Sprague-Dawley rats (Rattus norvegicus). Two groups received 3 and 6 sequences of 5 foot shocks at random intervals (RI) and fixed intervals (FI), respectively. A 3rd group was not shocked (NS). The groups were exposed for 60 min twice. Grooming did not differ among groups, but yawning diminished with RI. Yawning increased and grooming decreased with the 2nd exposure, except in RI in which grooming increased. In NS and FI, grooming prevailed during the first 20 and 30 min, respectively, whereas yawning dominated the remainder of the time. In RI, grooming occurred more than yawning. An upward shift on this scale causes grooming to substitute yawning, whereas a downward shift causes the reverse effect. 相似文献