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181.
182.
Recently, Yeshurun and Levy (Psychol Sci 14:225-231, 2003) have provided evidence for the notion that visual attention impairs the temporal resolution of the visual system. Specifically, the detection of a temporal gap within a visual stimulus was impaired when a cue directed attention towards the spatial location of the stimulus. As this negative cueing effect is important to constrain theories about visual attention, we further investigated this novel effect and assessed whether it truly reflects an attentional effect. Experiment 1 examines whether the negative cueing effect is due to local temporal interference, and Experiments 2 and 3 investigate whether it reflects a luminance confound. The complete pattern of results argues against these alternatives and thus further strengthens the conclusion of Yeshurun and Levy (Psychol Sci 14: 225-231, 2003). 相似文献
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Since the pioneering work of [Aglioti, S., DeSouza, J. F., & Goodale, M. A. (1995). Size-contrast illusions deceive the eye but not the hand. Current Biology, 5(6), 679-685] visual illusions have been used to provide evidence for the functional division of labour within the visual system-one system for conscious perception and the other system for unconscious guidance of action. However, these studies were criticised for attentional mismatch between action and perception conditions and for the fact that grip size is not determined by the size of an object but also by surrounding obstacles. Stoettinger and Perner [Stoettinger, E., & Perner, J., (2006). Dissociating size representations for action and for conscious judgment: Grasping visual illusions without apparent obstacles. Consciousness and Cognition, 15, 269-284] used the diagonal illusion controlling for the influence of surrounding features on grip size and bimanual grasping to rule out attentional mismatch. Unfortunately, the latter objective was not fully achieved. In the present study, attentional mismatch was avoided by using only the dominant hand for action and for indicating perceived size. Results support the division of labour: Grip aperture follows actual size independent of illusory effects, while finger-thumb span indications of perceived length are clearly influenced by the illusion. 相似文献
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187.
Humans, apes, and rhesus monkeys demonstrate memory awareness by collecting information when ignorant and acting immediately
when informed. In this study, five capuchin monkeys searched for food after either watching the experimenter bait one of four
opaque tubes (seen trials), or not watching (unseen trials). Monkeys with memory awareness should look into the tubes before
making a selection only on unseen trials because on seen trials they already know the location of the food. In Experiment
1, one of the five capuchins looked significantly more often on unseen trials. In Experiment 2, we ensured that the monkeys
attended to the baiting by interleaving training and test sessions. Three of the five monkeys looked more often on unseen
trials. Because monkeys looked more often than not on both trial types, potentially creating a ceiling effect, we increased
the effort required to look in Experiment 3, and predicted a larger difference in the probability of looking between seen
and unseen trials. None of the five monkeys looked more often on unseen trials. These findings provide equivocal evidence
for memory awareness in capuchin monkeys using tests that have yielded clear evidence in humans, apes, and rhesus monkeys. 相似文献
188.
Elisabeth Lund Poul Erik Spliid Erik Andersen Marie Bojsen-Mller 《Brain and language》1986,29(2):191-211
Whether the perception of vowels takes place in the right or left cerebral hemisphere, or is dependent on bilateral cortical processes, is of importance in our treatment of patients with language deficiencies. To investigate this problem a phonetic test with a series of vowellike stimuli was administered to 68 right-handed adult patients with cerebral lesions, mainly of vascular origin. The results were compared to the results in a control group of 19 speech therapists. Second, a neuroradiologic method was developed in order to visualize the anatomic site of Wernicke's area in the left hemisphere on CT scans. This method formed the basis for an evaluation of the extent and localization of the patients' lesions in Wernicke's area. Of 46 patients with lesions in the left hemisphere, 19 had no perceptual disturbances and 27 had severe perceptual disturbances with lesions predominantly located in Wernicke's area. Twenty-two patients with lesions in the corresponding area in the right hemisphere showed no perceptual disturbances. The results of this investigation appear to indicate that the perception of vowels in right-handed persons is unilaterally located in Wernicke's area in the left hemisphere. 相似文献
189.
Andrew Steptoe Linda Perkins-Porras Elisabeth Rink Sean Hilton Francesco P Cappuccio 《Health psychology》2004,23(6):574-581
This study assessed psychological and social factors predicting 12-month changes in fruit and vegetable consumption achieved by 271 men and women from a low-income population randomized to brief behavioral and nutrition education counseling. Greater increases in fruit and vegetable intake were achieved in the behavioral than in the nutrition education condition (1.49 vs. 0.87 portions per day, p=.021). Increases were predicted by baseline social support for dietary change but not by baseline psychological measures. However, short-term (8-week) changes in dietary self-efficacy, encouragement, anticipated regret, perceived benefits, and knowledge of recommended intake predicted 12-month changes in fruit and vegetable consumption independently of gender, age, ethnicity, income, and baseline intake. These factors accounted for 51% of the superiority of behavioral counseling over nutrition education. 相似文献
190.
Murray Krim Ph.D. Donald F. Dal Maso C.S.W. Claude Barbre Richard Carter M.Div. James W. Ellis Jr. M. Div. S.T.M. Elisabeth M. Smith M.P.S. James E. Jennings Ph.D. Pamela Davis Barnett M.Ed. M.A. James W. Ellis Jr. M.Div. S.T.M. Kathleen Ford C.S.W. Robert Mills Milton W. Hay D. Min. Judy A. Levitz Ph.D NCPsya Jill Carlen Kirby M.S. Ed. C.S.W. Patrick Minges M.Phil. 《Journal of religion and health》1996,35(2):169-185