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Melina A. Kunar Randall Carter Michael Cohen Todd S. Horowitz 《Psychonomic bulletin & review》2008,15(6):1135-1140
Recent research has shown that holding telephone conversations disrupts one’s driving ability. We asked whether this effect
could be attributed to a visual attention impairment. In Experiment 1, participants conversed on a telephone or listened to
a narrative while engaged in multiple object tracking (MOT), a task requiring sustained visual attention. We found that MOT
was disrupted in the telephone conversation condition, relative to single-task MOT performance, but that listening to a narrative
had no effect. In Experiment 2, we asked which component of conversation might be interfering with MOT performance. We replicated
the conversation and single-task conditions of Experiment 1 and added two conditions in which participants heard a sequence
of words over a telephone. In the shadowing condition, participants simply repeated each word in the sequence. In the generation
condition, participants were asked to generate a new word based on each word in the sequence. Word generation interfered with
MOT performance, but shadowing did not. The data indicate that telephone conversation disrupts attention at a central stage,
the act of generating verbal stimuli, rather than at a peripheral stage, such as listening or speaking. 相似文献
33.
Observers tend to remember seeing a greater expanse of a scene than was shown (boundary extension [BE]). Is undivided visual attention necessary for BE? In Experiment 1, 108 observers viewed photographs with superimposed numerals (2s and 5s). Each appeared for 750 msec, followed by a masked interval and a test picture (same, closer up, or wider angled). Test pictures were rated as the same, closer, or wider angled on a 5-point scale. Visual attention was manipulated with a search task: The observers reported the number of 5s (zero, one, or two). The observers performed search only, picture rating only, or both (giving search priority). Search accuracy was unaffected by condition. BE occurred in both conditions but was greater with divided attention. The results were replicated using incidental BE tests (Experiments 2 and 3). We propose that anticipatory representation of layout occurs automatically during scene perception, with focal attention serving to constrain the boundary error. 相似文献
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A model of mourning: change in schemas of self and other 总被引:1,自引:0,他引:1
M J Horowitz 《Journal of the American Psychoanalytic Association》1990,38(2):297-324
The mourning process may serve an evolutionary purpose, one that has allowed maximum survival characteristics. By passage through the phases of grief, the bereaved person prepares to make new commitments to others and to accept new personal roles. This passage involves an unconscious change in mental structures of meanings about the self and other people. This paper examines mourning in terms of such person schemas. 相似文献
38.
Adrenergic nervous system alteration and ethanol-induced narcosis in long-sleep and short-sleep mice
Long-sleep (LS) and short-sleep (SS) mice were pretreated with either propranolol or phentolamine, followed by a hypnotic dose of ethanol. Pretreatment with propranolol, but not phentolamine, significantly reduced ethanol sleep time in LS mice. The SS mice were not affected. In a second study propranolol pretreatment was given subsequent to ethanol at various doses, different for each line, that produced similar sleep time durations in both lines. Under these conditions, propranolol decreased sleep time in both LS and SS mice. These data lend support to the idea that noradrenergic mechanisms play a role in the mediation of the hypnotic effects of ethanol. 相似文献
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Joan S. Girgus Stanley Coren Leah Horowitz 《Attention, perception & psychophysics》1973,13(1):157-160
Illusion decrement with prolonged inspection was used as a technique to assess the relative amount of central component in seven variants of the Mueller-Lyer illusion. Results indicate that all of the variant forms share a common, central component, while the peripheral components, such as lateral inhibition, vary as a function of the presence of converging lines in the illusion configurations. 相似文献
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