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121.
122.
Olivers and van der Helm (1998) showed that symmetry-defined visual search (for both symmetry and asymmetry) requires selective spatial attention. We hypothesize that an attentional set for the orientation of a symmetry axis also is involved in symmetry-defined visual search. We conducted three symmetry-defined visual search experiments with manipulations of the axis of symmetry orientations, and performance was better when the axis orientations within the search array were uniform, rather than a mixture of two orientations, and the attentional set for the axis orientation could be kept. In addition, search performance when the target was defined by the presence of symmetry was equivalent to that when the target was defined by a difference of symmetry axis orientation. These results suggest that attentional set for axis orientation plays a fundamental role in symmetry-defined visual search. 相似文献
123.
Differential effect of distractor timing on localizing versus identifying visual changes 总被引:1,自引:0,他引:1
Watanabe K 《Cognition》2003,88(2):243-257
When visual changes are accompanied by visual transients, such as in the case of saccades, eye blinks, and brief flickers, they often go unnoticed; this phenomenon is called change blindness (Rensink, R. A. (2002). Change detection. Annual Review of Psychology 53, 245; Simons, D. J., & Levin, D. T. (1997). Change blindness. Trends in Cognitive Sciences 1, 261). Change blindness occurs even when the position of visual transients does not cover the location of the change (as in the 'mudsplash' paradigm) (O'Regan, J. K., Rensink, R. A., & Clark, J. J. (1999). Nature 398, 34). By using a simplified mudsplash display, the present study investigated whether change blindness depends on (a). the timing of visual transients, and (b). the task that observers perform. Eight Gabor elements with random orientations were presented. One element (target) was rotated 45 degrees clockwise or counterclockwise without a temporal gap. High contrast visual transients, not overlapping with the elements, appeared at various times with respect to the target change. Observers reported where the change was (change localization), or in which direction the target rotated (change identification). Change localization was impaired primarily when the onset of the transient was at or after the change. In contrast, change identification was impaired mainly when the transient preceded the change. These results suggest that change localization and change identification are mediated in part by different mechanisms. 相似文献
124.
In this article a physician reflects on her experience as a chaplain intern and how this Clinical Pastoral Education experience led to a deeper understanding of spiritual care in the palliative setting. 相似文献
125.
This study examined the effect of an acute exercise program of different exercise conditions on state anxiety among older adults. 73 healthy subjects were recruited and randomly assigned to either water exercise group (n = 36) or land exercise group (n = 37). State anxiety was assessed before exercise and following exercise. Subjects in the water exercise performed a 70-min. exercise program consisting of a 10-min. warm-up, a 20-min. brisk walking, a 20-min. rhythmic dancing, a 10-min. resistance training, and a 10-min. cool down exercise. The land exercise program contained a 10-min. warm up and a 30-min. combined endurance and resistance exercise, followed by a 10-min. cool down exercise. Analysis showed that both exercise groups scored significantly (p<.001) lower on anxiety after exercise, but there was no significant interaction for group by trial for scores on state anxiety. The data indicate that elderly persons who participate in these types of exercise report lower state anxiety. 相似文献
126.
Hiroshi Watanabe Franke E. Pollick Jan J. Koenderink Mitsuo Kawato 《Attention, perception & psychophysics》1999,61(6):1116-1139
The primary objective of this study was to quantitatively investigate the human perception of surface curvature by using virtual surfaces and motor tasks along with data analysis methods to estimate surface curvature from drawing movements. Three psychophysical experiments were conducted. In Experiment 1, we looked at subjects’ sensitivity to the curvature of a curve lying on a surface and changes in the curvature as defined byEuler’s formula, which relates maximum and minimum principal curvatures and their directions. Regardless of direction and surface shape (elliptic and hyperbolic), subjects could report the curvature of a curve lying on a surface through a drawing task. In addition, multiple curves drawn by subjects were used to reconstruct the surface. These reconstructed surfaces could be better accounted for by analysis that treated the drawing data as a set of curvatures rather than as a set of depths. A pointing task was utilized in Experiment 2, and subjects could report principal curvature directions of a surface rather precisely and consistently when the difference between principal curvatures was sufficiently large, but performance was poor for the direction of zero curvature (asymptotic direction) on a hyperbolic surface. In Experiment 3, it was discovered that sensitivity to the sign of curvature was different for perceptual judgments and motor responses, and there was also a difference for that of a curve itself and the same curve embedded in a surface. These findings suggest that humans are sensitive to relative changes in curvature and are able to comprehend quantitative surface curvature for some motor tasks. 相似文献
127.
This paper provides an overview of an interdisciplinary programme of research started more than 20 years ago at the University of Tokyo. A major aim of this programme was (and still is) to develop methods and related forms of quantitative analysis that provide rigorous evaluations of infant behaviour from a particular theoretical perspective. In one part of the programme telethermography is used to measure emotional changes in young infants. Contrary to the accepted view in attachment theory, infants as young as 2–3 months showed evidence of stress following separation from the mother (as indexed by a drop in the skin temperature of the infant's forehead). In another part, we established the presence of interpersonal synchrony between arm movements of the newborn and the speech of the mother and other adults, using computer assisted pattern recognition techniques. On the basis of this finding, we have proposed a simulation model of mother-infant interaction from the perspective of system information theory. In general, our programme of research provides a theoretically driven set of techniques and analytical approaches that may provide deeper insights into early development and parenting. 相似文献
128.
Shigeru Watanabe 《Animal cognition》2001,4(3-4):147-151
The author has previously reported that pigeons can discriminate paintings by different artists. Here, I replicated the
previous findings, carried out additional tests and compared discrimination by pigeons with that of humans. In Experiment
1, pigeons were trained to discriminate between paintings by Van Gogh and Chagall. After training, the subjects were tested
with different paintings by the same artists. The subjects showed generalization to these paintings. The subjects maintained
their discriminative ability for black-and-white paintings and partially occluded paintings. When they were tested with mosaic
paintings, the number of correct responses decreased, depending on the level of processing needed. In Experiment 2, human
subjects were tested with the same paintings. The subjects showed generalization and decrement of correct responses depending
on the degree of mosaic processing. These observations suggest that the visual cognitive function of pigeons is comparable
to that of humans. The convergence of higher visual cognition between the two species may stem from similar selection pressures
on avian ancestors and our ancestors through their evolution.
Accepted after revision: 19 August 2001
Electronic Publication 相似文献
129.
Tadaharu Watanabe 《Integrative psychological & behavioral science》2017,51(3):403-418
This study will show the results of four dialogical cultural exchange classes, which were held between Japanese and Chinese high school students, and examine the shifts in students’ viewpoints and changes in cultural understandings that occurred during those classes. In the first cultural exchange class, students of both countries read a story which described an older student who carelessly wore a T-shirt inside out, and younger students passed by without greeting him. Students of both countries were then asked to write their comments about it. From the second to the fourth class, students discussed the story with each other through exchanging their comments. By presenting another story, which introduced the viewpoint of a third person, and asking them questions that allowed them to reflect on their lives, students also experienced four different viewpoints during these cultural exchange classes. At the beginning of the cultural exchange, students of both countries tended to focus on the similarities in each other’s comments, which led to the closing down of the discussion. However, through discussions and experiencing the four different viewpoints, they found there are some essential differences between them around ‘ways of greeting’ and ‘hierarchical relationships between older and younger students’, which motivated them to understand their counterparts’ culture. Moreover, in the last comments of these cultural exchange classes, it was found that they acquired the viewpoints of cultural others. Given the results of these classes, it is shown that it is effective to present various stories to stimulate cultural understanding. 相似文献
130.
Fields L Tittelbach D Shamoun K Watanabe M Fitzer A Matneja P 《Journal of the experimental analysis of behavior》2007,87(1):97-119
When the stimuli in one perceptual class (A') become related to the stimuli in another perceptual class (B'), the two are functioning as a single linked perceptual class. A common linked perceptual class would be the sounds of a person's voice (class A') and the pictures of that person (class B'). Such classes are ubiquitous in real world settings. We describe the effects of a variety of training procedures on the formation of these classes. The results could account for the development of naturally occurring linked perceptual classes. Two perceptual classes (A' and B') were formed in Experiment 1. The endpoints of the A' class were called anchor (Aa) and boundary (Ab) stimuli. Likewise, the anchor and boundary stimuli in the B' class were represented as Ba and Bb. In Experiment 2, the A' and B' classes were linked by the establishment of one of four cross-class conditional discriminations: Aa-->Ba, Aa-->Bb, Ab-->Ba, or Ab-->Bb. Results were greatest after Aa-->Bb training, intermediate after Aa-->Ba and Ab-->Ba training, and lowest after Ab-->Bb training. Class formation was influenced by the interaction of the anchor/boundary values and the sample/comparison functions of the stimuli used in training. Experiment 3 determined whether class formation was influenced by different sets of two cross-class conditional discriminations: Aa-->Ba and Ab-->Bb, or Aa-->Bb and Ab-->Ba. Both conditions produced equivalent results. Similarities were attributable to the use of anchor stimuli as samples and boundary stimuli as comparisons in each training condition. Finally, the results afterjoint Aa-->Ba and Ab-->Bb training were much greater than those produced by summing the results of Aa-->Ba training alone and Ab-->Bb training alone. This same synergy was not observed after joint Aa-->Bb and Ab-->Ba training or either alone. 相似文献