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排序方式: 共有437条查询结果,搜索用时 15 毫秒
31.
Djamel Hamana Assia Azizi Gamra Tellouche Merzoug Bouchear 《Philosophical Magazine Letters》2013,93(11):697-704
Dissolution of GP zones, formed in aged Al–12?wt%?Mg alloy at ?15 and 24°C, occurs during primary dilatometric and calorimetric tests, but the effect disappears after secondary tests, at low heating and cooling rates (1–2°C/min). After a?new holding at the above temperatures, GP zones again form and β and β′ phases precipitate. The results suggest the formation of GP zones without the presence of quenched-in vacancies. 相似文献
32.
An important factor in determining perceived scene layout is optical contact between objects and the ground surface (“ground contact”). The relation between ground contact and occlusion was investigated in four experiments with stationary and motion parallax scenes containing a pole that occluded or was occluded by one or more cylinders. Some judgements were inconsistent with occlusion in stationary scenes, but judgements were consistent with occlusion in motion parallax scenes. When the range of object positions consistent with occlusion did not include the positions specified by ground contract or by motion parallax, the ground contact and motion parallax information still had a quantitative effect on the perceived position of the object within the range consistent with occlusion. These results demonstrate a cooperative interaction between ground contact, occlusion, and motion parallax in determining perceived layout in 3-D scenes. 相似文献
33.
《Quarterly journal of experimental psychology (2006)》2013,66(11):2153-2167
Many common behaviours require people to coordinate the timing of their actions with the timing of others' actions. We examined whether representations of musicians' actions are activated in coperformers with whom they must coordinate their actions in time and whether coperformers simulate each other's actions using their own motor systems during temporal coordination. Pianists performed right-hand melodies along with simple or complex left-hand accompaniments produced by themselves or by another pianist. Individual performers' preferred performance rates were measured in solo performance of the right-hand melody. The complexity of the left-hand accompaniment influenced the temporal grouping structure of the right-hand melody in the same way when it was performed by the self or by the duet partner, providing some support for the action corepresentation hypothesis. In contrast, accompaniment complexity had little influence on temporal coordination measures (asynchronies and cross-correlations between parts). Temporal coordination measures were influenced by a priori similarities between partners' preferred rates; partners who had similar preferred rates in solo performance were better synchronized and showed mutual adaptation to each other's timing during duet performances. These findings extend previous findings of action corepresentation and action simulation to a task that requires precise temporal coordination of independent yet simultaneous actions. 相似文献
34.
《Journal of Cognitive Psychology》2013,25(6):679-698
Tipper, Paul and Hayes found object-based correspondence effects for door-handle stimuli for shape judgments but not colour. They reasoned that a grasping affordance is activated when judging dimensions related to a grasping action (shape), but not for other dimensions (colour). Cho and Proctor, however, found the effect with respect to handle position when the bases of the door handles were centred (so handles were positioned left or right; the base-centred condition) but not when the handles were centred (the object-centred condition), suggesting that the effect is driven by object location, not grasping affordance. We conducted an independent replication of Cho and Proctor's design, but with behavioural and event-related potential measures. Participants made shape judgments in Experiment 1 and colour judgments in Experiment 2 on the same door-handle objects. Correspondence effects on response time and errors were obtained in both experiments for the base-centred condition but not the object-centred condition. Effects were absent in the P1 and N1 data, which are consistent with the hypothesis of little binding between visual processing of grasping component and action. These findings question the grasping-affordance view but support a spatial-coding view, suggesting that correspondence effects are modulated primarily by object location. 相似文献
35.
In experiment 1, pigeons were trained to match temporal (2, 8, and 10 s of houselight) and location (feeder light, left key,
center key illumination) samples to color comparison stimuli. Red choices were correct following the 2-s and feeder light,
orange choices were correct following the 8-s and center key, and green choices were correct following the 10-s and left key.
Samples that were harder to discriminate (8- vs 10-s, and left vs center key) were mapped onto comparisons that were easy
to discriminate (orange vs green), while samples that were easier to discriminate (2- vs 8-s, and feeder light vs left key)
were mapped onto comparisons that were hard to discriminate(red vs orange). The pattern of errors for temporal and location
samples indicated that these samples were not represented by a common code even though they were associated with the same
comparison stimuli. In experiment 2, the same pigeons were trained with visual samples in which samples that were hard to
discriminate (triangle vs circle) were mapped onto comparisons that were easy to discriminate (orange vs green), while samples
that were easy to discriminate(plus vs triangle) were mapped onto comparisons that were hard to discriminate (red vs orange).
Following acquisition of the visual discrimination, the temporal samples were re-introduced and many-to-one training was continued.
During delay testing, the pattern of errors for temporal and visual samples was equivalent and consistent with the hypothesis
that visual samples were being coded in terms of the duration appropriate for the temporal sample with which it shared a common
comparison response. Data from no-sample test sessions ruled out a simple response bias explanation of the data. The properties
of common codes for temporal and nontemporal events can be somewhat flexible and more complicated than previously envisaged.
Received: 21 January 1998 / Accepted after revision: 5 April 1998 相似文献
36.
《Psychologie Fran?aise》2016,61(3):177-190
Temporal orientation is an essential data of the human psyche that modulates how we relied to the times of life. This survey describes the creation of a psychometric measure of temporal orientation in young French adults. Starting with the observation that temporal orientation is difficult for youngsters, a team of psychologists developed a preliminary version of the instrument. The psychometric validity of the test has been analyzed. The data have been collected on 507 high school students and academic students in the region of Nantes. An exploratory factorial analysis shows four dimensions: “short-term”, “immediately”, “anticipation” and “long-term”. The internal consistency is generally satisfactory and the measure of convergence confirms the external validity. The weak interrelationships between dimensions indicate distinct psychological constructs. A validated version composed of 30 items of the Temporal Orientation Test (TOT) is proposed. 相似文献
37.
Beatrice G. Kuhlmann C. Dennis Boywitt 《Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition》2016,23(4):477-498
In a previous study, we found source memory for perceptual features to differentiate between younger but not older adults’ reports of recollective (“remember”; R) and “know” (K) experiences. In two experiments with younger (17–30 years) and older (64–81 years) participants, we examined whether memory for meaningful speaker sources would accompany older adults’ recollective experience. Indeed, memory for male and female speakers (but not partial memory for gender; Experiment 1) as well as bound memory for speakers and their facial expressions (Experiment 2) distinguished between both younger and older adults’ RK reports. Thus, memory for some sources forms a common basis for younger and older adults’ retrieval experience. Nonetheless, older adults still showed lower objective source memory and lower subjective source-attribution confidence than younger adults when reporting recollective experiences, suggesting that source memory is less relevant to their retrieval experience than for younger adults. 相似文献
38.
Dong-Yuan Debbie Wang F. Dan Richard Brittany Ray 《Quarterly journal of experimental psychology (2006)》2016,69(8):1648-1656
The stimulus–response correspondence (SRC) effect refers to advantages in performance when stimulus and response correspond in dimensions or features, even if the common features are irrelevant to the task. Previous research indicated that the SRC effect depends on the temporal course of stimulus information processing. The current study investigated how the temporal overlap between relevant and irrelevant stimulus processing influences the SRC effect. In this experiment, the irrelevant stimulus (a previously associated tone) preceded the relevant stimulus (a coloured rectangle). The irrelevant and relevant stimuli onset asynchrony was varied to manipulate the temporal overlap between the irrelevant and relevant stimuli processing. Results indicated that the SRC effect size varied as a quadratic function of the temporal overlap between the relevant stimulus and irrelevant stimulus. This finding extends previous experimental observations that the SRC effect size varies in an increasing or decreasing function with reaction time. The current study demonstrated a quadratic function between effect size and the temporal overlap. 相似文献
39.
40.
Research on the mental representation of time (‘subjective time’) has provided broad insights into the nature of time perception and temporal processing. As the field comprises different scientific disciplines, such as psychology, philosophy, and neuroscience, studies differ with regard to the basic terms and concepts used. For this reason, research on subjective time lacks a coherent conceptual system. We argue that research in the field of subjective time should aim at establishing such a system, i.e., a more standardized terminology, in order to strengthen its theoretical basis and to support an efficient communication of results. Based on key empirical findings and concepts that are commonly (but inconsistently) used in the literature, we argue for a conceptual framework for the study of subjective time that differentiates between three types of mental representations of time: basic temporal processing, time perception in terms of passage, and time perception in terms of duration. 相似文献