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11.
Frankland PW Ding HK Takahashi E Suzuki A Kida S Silva AJ 《Learning & memory (Cold Spring Harbor, N.Y.)》2006,13(4):451-457
Following initial encoding, memories undergo a prolonged period of reorganization. While such reorganization may occur in many different memory systems, its purpose is not clear. Previously, we have shown that recall of recent contextual fear memories engages the dorsal hippocampus (dHPC). In contrast, recall of remote contextual fear memories engages a number of different cortical regions, including the anterior cingulate cortex (ACC). To examine whether this reorganization leads to greater memory stability, we examined reconsolidation of 1 d-old (recent) and 36 d-old (remote) contextual fear memory in mice. We infused the protein synthesis inhibitor, anisomycin (ANI), into either the dHPC or ACC immediately following retrieval of either a recent or remote contextual fear memory. In the dHPC, ANI infusions disrupted subsequent expression of recent, but not remote, contextual fear memory. Similar infusions into the ACC had no effect on either recent or remote contextual fear memories, whereas systemically applied ANI blocked subsequent remote memory expression when long re-exposure durations were used. Together, these data suggest that as memories mature they become increasingly stable. Furthermore, the dissociation between the effects of systemically and centrally administered ANI on remote memory suggests that stability is due, in part, to the distributed nature of remote contextual fear memories. 相似文献
12.
Takahashi M Shimizu H Saito S Tomoyori H 《Journal of experimental psychology. Learning, memory, and cognition》2006,32(5):1195-1200
In 1987, Hideaki Tomoyori, a Japanese memorist, set a world record for reciting the first 40,000 digits of pi. The authors report results from a series of tests that give a view of Tomoyori's memory performance compared with that of a control group, matched for age and educational level. He showed very good scores on tasks with digits, such as digit memory span tasks and 5 x 5 number matrix learning, although some of the control participants were nearly as good. In contrast, his performance was not particularly good for learning word lists and story recall. Overall, his performance on the tasks does not suggest that he has superior cognitive abilities. We believe that his extraordinary memory performance in reciting the digits of pi results from his effective use of a combination of digit-syllable transformations and imagery mnemonics developed from extensive practice. These results are consistent with the skilled memory framework. 相似文献
13.
The relationship between language and cognitive shifting in young children was examined. Specifically, second language experiences from infancy as well as individual differences in monolingual language experience may affect performances on the Dimensional Change Card Sort Task. 54 Japanese-French bilingual children and two groups of Japanese monolingual children participated (ns = 18). One monolingual group was matched to the bilingual group on verbal ability and chronological age (VC monolingual group) and the other group was matched by chronological age but had higher verbal ability (C monolingual group). The results showed that the groups of children who were bilingual and monolingual with higher verbal ability performed the task significantly better than matched monolingual children. Language experiences may affect cognitive set shifting in young children. 相似文献
14.
Yusuke Moriguchi Masayuki Tanaka Shoji Itakura 《The Journal of genetic psychology》2013,174(3):252-265
In this article the authors compared chimpanzees’ executive function with that of children. They developed a nonverbal dimensional change card sorting task, which indexed the development of executive function. Three pairs of mother and offspring chimpanzees and 30 typically developed 5-year-old children were presented with 2 target stimuli and a test stimulus comprising 2 dimensions (size and shape) on a display; they were required to sort the test stimulus according to 1 dimension (e.g., shape). After 5 consecutive correct trials, the participants had to sort the test stimulus according to the other dimension (e.g., size). The results showed that the chimpanzees often failed to sort the test stimuli according to the first and reversed dimensions. On the other hand, the children were correctly able to use both dimensions. These results indicate that chimpanzees may have less developed executive skills than children. 相似文献
15.
Yusuke Yamani Jason S. McCarley Jeffrey R. W. Mounts Arthur F. Kramer 《Attention, perception & psychophysics》2013,75(2):229-243
A pair of experiments investigated the architecture of visual processing, parallel versus serial, across high and low levels of spatial interference in a divided attention task. Subjects made speeded judgments that required them to attend to a pair of color-cued objects among gray filler items, with the spatial proximity between the attended items varied to manipulate the strength of interference between attended items. Systems factorial analysis (Townsend & Nozawa, Journal of Mathematical Psychology 39:321-359, 1995) was used to identify processing architecture. Experiment 1, using moderately dense displays, found evidence of parallel processing whether attended objects were in low or high proximity to one another. Experiment 2, using higher-density displays, found evidence of parallel selection when attended stimuli were widely separated but serial processing when they were in high proximity. Divided visual attention can operate in parallel under conditions of low or moderate spatial interference between selected items, but strong interference engenders serial processing. 相似文献
16.
An Internet‐based survey was administered in Japan to compare mental health of and stigma toward unemployed individuals, workers with regular employment, and workers with irregular employment. Unemployed individuals showed higher scores for both anxiety/depression and disturbance of activities, as well as faced more stigma than did employed individuals. In addition, the factor structure of stigma that unemployed individuals have toward the unemployed was the same as that previously found for university students and employed individuals. Financial strain and stigma were the factors with the greatest influence on the mental health of unemployed individuals. 相似文献
17.
Singh T McDannald MA Takahashi YK Haney RZ Cooch NK Lucantonio F Schoenbaum G 《Learning & memory (Cold Spring Harbor, N.Y.)》2011,18(2):85-87
While knowing what to expect is important, it is equally important to know when to expect it and to respond accordingly. This is apparent even in simple Pavlovian training situations in which animals learn to respond more strongly closer to reward delivery. Here we report that the nucleus accumbens core, an area well-positioned to represent information about the timing of impending rewards, plays a critical role in this timing function. 相似文献
18.
Visual patterns consisting of a red-and-blue region with a blurry edge yield illusory motion. Eye movements over a static pattern induced illusory motion of the edge in the direction opposite to the eye movement. The illusion also takes place for patterns in motion without eye movement. The illusion suggests the effect of colour combination on the spatial perception of a blurry edge. 相似文献
19.
Although functional magnetic resonance imaging (fMRI) with sophisticated behavioral paradigms has enabled the investigation of increasingly higher-level cognitive functions in humans, these studies seem to lose touch with neurophysiological studies in macaque monkeys. The application of fMRI and other MRI-based techniques to macaque brains allows studies in the two species to be linked. fMRI in human and macaque subjects using equivalent cognitive tasks enables direct comparisons of the functional brain architecture, even for high-level cognitive functions. Combinations of functional or structural MRI and microelectrode techniques provide ways to explore functional brain networks at multiple spatiotemporal scales. These approaches would illuminate the neurophysiological underpinnings of human cognitive functions by integrating human functional neuroimaging with macaque single-unit recordings. 相似文献
20.
T C Antonucci J E Lansford L Schaberg M Baltes K Takahashi J F Dartigues J Smith H Akiyama R Fuhrer 《Psychology and aging》2001,16(4):655-665
This study examined social network characteristics of adults aged 70 to 90 years in relation to widowhood and illness in France, Germany, Japan, and the United States. Participants were drawn from representative samples from each of the 4 countries (total N = 1,331). Resource deficit profiles based on whether respondents were widowed, ill, both, or neither were directly related to social network characteristics for German and Japanese adults, were differentially related by gender and age for French adults, and were not related to social networks of Americans. Country, gender, and age differences in total network size, proportion of close network members, and frequency of contact with network members are reported. Similarities and differences found in the associations between normative late-life deficits and social network characteristics in the 4 countries point to the importance of investigating sociocultural factors that mediate the impact of resource loss and afford life quality in very old age. 相似文献