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311.
Marguerite Stevenson Barratt Koichi Negayama Tetsuhiro Minami 《Infant and child development》1993,2(1):51-64
The social environments of early infancy in Japan and the United States were compared in terms of the context of caregiving and the quality of the month-infant interaction. Mothers of 17 Japanese infants and 17 infants in the United States were interviewed in their homes about the experiences that they provided for their 4-month-old infants, and mother-infant interactions were recorded on videotape. Levels of parents' education were similar in both countries. The context of the infant's development varied substantially with culture. Mothers in the United States provided a greater variety of experiences on the HOME and care of Japanese infants tended to be more exclusively provided by mothers whereas care of infants in the United States was shared by fathers and other caregivers to a greater extent. Examination of behaviour frequencies during mother-infant interaction indicated that mothers in Japan provided their infants with more vocal input and more physical play than mothers in the United States and Japanese mothers were more vocally responsive to their infants' vocalizations. 相似文献
312.
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314.
Randolph D. Easton Anthony J. Greene Kavitha Srinivas 《Psychonomic bulletin & review》1997,4(3):403-410
Explicit memory tests such as recognition typically access semantic, modality-independent representations, while perceptual implicit memory tests typically access presemantic, modality-specific representations. By demonstrating comparable cross- and within-modal priming using vision and haptics with verbal materials (Easton, Srinivas, & Greene, 1997), we recently questioned whether the representations underlying perceptual implicit tests were modality specific. Unlike vision and audition, with vision and haptics verbal information can be presented in geometric terms to both modalities. The present experiments extend this line of research by assessing implicit and explicit memory within and between vision and haptics in the nonverbal domain, using both 2-D patterns and 3-D objects. Implicit test results revealed robust cross-modal priming for both 2-D patterns and 3-D objects, indicating that vision and haptics shared abstract representations of object shape and structure. Explicit test results for 3-D objects revealed modality specificity, indicating that the recognition system keeps track of the modality through which an object is experienced. 相似文献
315.
Motor learning-dependent synaptogenesis is localized to functionally reorganized motor cortex. 总被引:19,自引:0,他引:19
Jeffrey A Kleim Scott Barbay Natalie R Cooper Theresa M Hogg Chelsea N Reidel Michael S Remple Randolph J Nudo 《Neurobiology of learning and memory》2002,77(1):63-77
The regional specificity and functional significance of learning-dependent synaptogenesis within physiologically defined regions of the adult motor cortex are described. In comparison to rats in a motor activity control group, rats trained on a skilled reaching task exhibited an areal expansion of wrist and digit movement representations within the motor cortex. No expansion of hindlimb representations was seen. This functional reorganization was restricted to the caudal forelimb area, as no differences in the topography of movement representations were observed within the rostral forelimb area. Paralleling the physiological changes, trained animals also had significantly more synapses per neuron than controls within layer V of the caudal forelimb area. No differences in the number of synapses per neuron were found in either the rostral forelimb or hindlimb areas. This is the first demonstration of the co-occurrence of functional and structural plasticity within the same cortical regions and provides strong evidence that synapse formation may play a role in supporting learning-dependent changes in cortical function. 相似文献
316.
Dispositions can be finkish, prone to disappear in circumstances that would commonly trigger their characteristic manifestations. Can a disposition be finkish because of something intrinsic to the object possessing that disposition? Sungho Choi has argued that this is not possible, and many agree. Here it is argued that no good case has been made for ruling out the possibility of intrinsic finks; on the contrary, there is good reason to accept it. 相似文献
317.
Increasing numbers of children diagnosed and treated for autism spectrum disorders (ASDs) has impacted both neuropsychologists and educators. Though both play key evaluative and treatment roles, there is no available method or process in place enabling the translation of the neuropsychological report recommendations into a format educational teams can easily use, leading to a gap between neuropsychological recommendations and educational planning. In the following, we review the areas evaluated by a neuropsychologist when assessing a child with an ASD, discuss the domains targeted by educational teams when designing an educational plan, and then present a process that has met with some success creating a "bridge" between the diagnostic/assessment process and the subsequent academic planning. Though presented in the context of ASD, the process described can be used by neuropsychologists for various populations to facilitate partnerships with educators that result in improved care for the child. 相似文献
318.
Rapid, repetitive exchange of dissimilar, rival stimuli between the two eyes can produce slow alternations in perceptual dominance. This phenomenon, called stimulus rivalry, is potentially important for studying resolution of visual conflict associated with neural processing beyond the level of interocular competition. As previously implemented, however, stimulus rivalry can be difficult for some observers to experience, and it tends to occur within a relatively narrow range of contrasts and spatial frequencies. Here we show that it is possible to increase the incidence of stimulus rivalry by brief, periodic presentation of a composite configuration created by superimposition of the two rival stimuli. Possible reasons for the effectiveness of the composite in promotion of stimulus rivalry are discussed. 相似文献
319.
Results from a series of psychophysical experiments show that interocular suppression produced by continuous flash suppression (CFS) differentially affects visual features of a target viewed by the other eye. When CFS stimuli are defined by luminance contrast, target color can be reliably identified but percent-correct discrimination of target orientation is near chance. When the colored target is moving, color identification deteriorates with motion speed but direction of motion discrimination improves with target speed. Color’s immunity to suppression is also weakened when interocular suppression is induced by equiluminant CFS stimuli that presumably stimulate the chromatic pathway. These results are discussed in terms of functional segregation of achromatic and chromatic processing in the visual system. 相似文献
320.
Sid E. O’Bryant Joy D. Humphreys Randolph B. Schiffer Patricia B. Sutker 《Journal of psychopathology and behavioral assessment》2007,29(3):137-140
Despite the rapidly growing nature of the Mexican American population in the United States, relatively little is known regarding
cognitive aging among this minority group compared to non-Hispanic, white individuals. The current study was conducted to
describe the nature of cognitive and affective characteristics of Mexican American patients with dementia or other cognitive
disorders on initial presentation to a Memory Disorder Clinic. Archival data were reviewed from this specialty clinic for
219 patients who were evaluated for the first time over a 2-year period. Twenty-two Mexican American patients were identified,
and a sample of 22 matched non-Hispanic white patients was derived for comparison. When compared to non-Hispanic white patients,
Mexican Americans were found in fewer numbers, reported higher levels of anxiety and depression, and produced lower scores
on neurocognitive assessments. Results support the notion that Mexican American patients present for cognitive assessment
and treatment at a greater stage of impairment severity as compared to non-Hispanic whites. 相似文献