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11.
Many human behaviors are known to benefit from audiovisual integration, including language and communication, recognizing individuals, social decision making, and memory. Exceptionally little is known about the contributions of audiovisual integration to behavior in other primates. The current experiment investigated whether short-term memory in nonhuman primates is facilitated by the audiovisual presentation format. Three macaque monkeys that had previously learned an auditory delayed matching-to-sample (DMS) task were trained to perform a similar visual task, after which they were tested with a concurrent audiovisual DMS task with equal proportions of auditory, visual, and audiovisual trials. Parallel to outcomes in human studies, accuracy was higher and response times were faster on audiovisual trials than either unisensory trial type. Unexpectedly, two subjects exhibited superior unimodal performance on auditory trials, a finding that contrasts with previous studies, but likely reflects their training history. Our results provide the first demonstration of a bimodal memory advantage in nonhuman primates, lending further validation to their use as a model for understanding audiovisual integration and memory processing in humans. 相似文献
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Ann E. Bigelow Marianne Littlejohn Nils Bergman Claudette McDonald 《Infant mental health journal》2010,31(3):358-377
The relation between early mother–infant skin‐to‐skin contact (SSC) and mothers' subsequent sensitivity to their low birth weight infants was investigated in a study of 12 mother–infant dyads who participated in a South African randomized control study of early SSC. The dyads were visited in the home when infants were under 1 year. Amounts of SSC were taken from hospital records and home interviews. Videotapes of mother–infant interactions in the home were scored for maternal sensitivity on the Maternal Behavior Q‐Sort (D.R. Pederson, G. Moran, & S. Bento, 1999) and the Maternal Behavior subscale of the Nursing Child Assessment Teaching Scale (G. Sumner & A. Spietz, 1994). Amount of SSC in infants' first 24 hr correlated with amount of SSC through the first month. Amount of SSC in infants' first 24 hr independently accounted for maternal sensitivity on both measures, indicating that early mother–infant SSC predicted subsequent maternal sensitivity. 相似文献
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James Bigelow 《Visual cognition》2013,21(9):1012-1016
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R R Griffiths G E Bigelow I A Liebson M O''''Keeffe D O''''Leary N Russ 《Journal of the experimental analysis of behavior》1986,45(2):133-148
In a residential research ward coffee drinking was studied in 9 volunteer human subjects with histories of heavy coffee drinking. A series of five experiments was undertaken to characterize adlibitum coffee consumption and to investigate the effects of manipulating coffee concentration, caffeine dose per cup, and caffeine preloads prior to coffee drinking. Manipulations were double-blind and scheduled in randomized sequences across days. When cups of coffee were freely available, coffee drinking tended to be rather regularly spaced during the day with intercup intervals becoming progressively longer throughout the day; experimental manipulations showed that this lengthening of intercup intervals was not due to accumulating caffeine levels. Number of cups of coffee consumed was an inverted U-shaped function of both coffee concentration and caffeine dose per cup; however, coffee-concentration and dose-per-cup manipulations did not produce similar effects on other measures of coffee drinking (intercup interval, time to drink a cup, within-day distribution of cups). Caffeine preload produced dose-related decreases in number of cups consumed. As a whole, these experiments provide some limited evidence for both the suppressive and the reinforcing effects of caffeine on coffee consumption. Examination of total daily coffee and caffeine intake across experiments, however, provides no evidence for precise regulation (i.e., titration) of coffee or caffeine intake. 相似文献
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Maxine L. Stitzer Cynthia S. Rand George E. Bigelow Andrew M. Mead 《Journal of applied behavior analysis》1986,19(2):197-202
We assessed the ability of a combined contingent reinforcement and intensive monitoring procedure to promote and sustain temporary smoking cessation among 34 hired research volunteers, and the ability of a smoking reduction test to predict the subsequent initiation of abstinence. During the 5-day cutdown test, subjects were paid from $0 to $6 per day depending on the extent of reduction from baseline CO levels. During the abstinence test, breath samples were obtained three times daily and subjects were paid $4 for each CO reading ≤11 ppm. Sixty-eight percent of subjects initiated abstinence. Of the breath samples collected during the abstinence test (91% of scheduled samples), 96.5% were ≤11 ppm and 80.5% were ≤8 ppm. Subjects who earned more money during the cutdown test were more likely to abstain (r = ?0.51, p < .001). Contingent reinforcement and intensive monitoring procedures appear to have usefulness for analog studies of smoking reduction and cessation. 相似文献
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Facilitation of human tobacco self-administration by ethanol: a behavioral analysis. 总被引:3,自引:0,他引:3
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R R Griffiths G E Bigelow I Liebson 《Journal of the experimental analysis of behavior》1976,25(3):279-292
The effect of ethanol on the cigarette smoking of alcoholic subjects was studied in a residential laboratory. During daily 6-hr sessions, cigarettes were obtained either by request to the ward staff or by operation of a lever (fixed-ratio 5 or 10). In a mixed sequence across days, sessions involved ingestion of either vehicle (orange juice or vehicle plus ethanol (133.7 g). During ethanol sessions, the rate of cigarette smoking increased from 26% to 117% of vehicle levels. A series of control studies eliminated a number of potential behavorial mechanisms for the observed effect and indicated that the ethanol-induced increase in cigarette smoking occurred under a variety of experimental conditions: (1) when smoking could not occur concurrently with ethanol or vehicle consumption; (2) when subjects were not allowed to socialize; (3) when ingestion of ethanol or vehicle was scheduled for a number of consecutive days; (4) when various doses of ethanol were administered under blind conditions. In control experiments, weighing unsmoked tobacco and counting the number of puffs per cigarette indicated the effect was not due to smoking less of each cigarette. The effect was not limited to the experimental sessions alone, since total daily smoking was higher on ethanol days than vehicle days. 相似文献