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322.
In the present report, we describe a new dynamic field theory that captures the dynamics of visuo-spatial cognition. This theory grew out of the dynamic systems approach to motor control and development, and is grounded in neural principles. The initial application of dynamic field theory to issues in visuo-spatial cognition extended concepts of the motor approach to decision making in a sensori-motor context, and, more recently, to the dynamics of spatial cognition. Here we extend these concepts still further to address topics in visual cognition, including visual working memory for non-spatial object properties, the processes that underlie change detection, and the ‘binding problem’ in vision. In each case, we demonstrate that the general principles of the dynamic field approach can unify findings in the literature and generate novel predictions. We contend that the application of these concepts to visual cognition avoids the pitfalls of reductionist approaches in cognitive science, and points toward a formal integration of brains, bodies, and behavior. 相似文献
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324.
Older (mean age = 74.23) and younger (mean age = 33.50) participants recalled items from 6 briefly exposed household scenes either alone or with their spouses. Collaborative recall was compared with the pooled, nonredundant recall of spouses remembering alone (nominal groups). The authors examined hits, self-generated false memories, and false memories produced by another person's (actually a computer program's) misleading recollections. Older adults reported fewer hits and more self-generated false memories than younger adults. Relative to nominal groups, older and younger collaborating groups reported fewer hits and fewer self-generated false memories. Collaboration also reduced older people's computer-initiated false memories. The memory conversations in the collaborative groups were analyzed for evidence that collaboration inhibits the production of errors and/or promotes quality control processes that detect and eliminate errors. Only older adults inhibited the production of wrong answers, but both age groups eliminated errors during their discussions. The partners played an important role in helping rememberers discard false memories in older and younger couples. The results support the use of collaboration to reduce false recall in both younger and older adults. 相似文献
325.
Phonological processing was examined in school-age children who stutter (CWS) by assessing their performance and recording event-related brain potentials (ERPs) in a visual rhyming task. CWS had lower accuracy on rhyming judgments, but the cognitive processes that mediate the comparisons of the phonological representations of words, as indexed by the rhyming effect (RE) ERP, were similar for the stuttering and normally fluent groups. Thus the lower behavioral accuracy of rhyming judgments by the CWS could not be attributed to that particular stage of processing. Instead, the neural functions for processes preceding the RE, indexed by the N400 and CNV elicited by the primes and the N400 elicited by the targets, suggest atypical processing that may have resulted in less efficient, less accurate rhyming judgment for the CWS. Based on the present results, it seems likely that the neural processes related to phonological rehearsal and target word anticipation, as indexed by the CNV, are distinctive for CWS at this age. Further, it is likely that the relative contributions of the left and right hemispheres differ in CWS in the stage of processing when linguistic integration occurs, as indexed by the N400. Taken together, these results suggest that CWS may be less able to form and retain a stable neural representation of the prime onset and rime as they anticipate the target presentation, which may lead to lower rhyming judgment accuracy. 相似文献
326.
Speech priming tasks are frequently used to delineate stages in the speech process such as lexical retrieval and motor programming.
These tasks, often measured in reaction time (RT), require fast and accurate responses, reflecting maximized participant performance,
to result in robust priming effects. Encouraging speed and accuracy in responding can take many forms, including verbal instructions
and feedback, and often involves visually displayed RT feedback. However, it is uncertain how manipulation of the schedule
of this RT feedback influences speech RT speed and, ultimately, the priming effect. This experiment examined the effect of
visually presented RT feedback schedules on priming patterns in 20 older healthy adults. Results suggested that feedback schedule
manipulation had a differential effect on reaction time, depending on the interstimulus interval between the prime and the
target, but no effect on response priming patterns. 相似文献
327.
Sleep-dependent memory consolidation is observed following motor skill learning: Performance improvements are greater over a 12-h period containing sleep relative to an equivalent interval without sleep. Here we examined whether older adults exhibit sleep-dependent consolidation on a sequence learning task. Participants were trained on one of two sequence learning tasks. Performance was assessed after a 12-h break that included sleep and after a 12-h break that did not include sleep. Older and younger adults showed similar degrees of initial learning. However, performance of the older adults did not improve following sleep, providing evidence that sleep-dependent consolidation is diminished with age. 相似文献
328.
Judging others’ power facilitates successful social interaction. Both gender and body posture have been shown to influence judgments of another’s power. However, little is known about how these two cues interact when they conflict or how they influence early processing. The present study investigated this question during very early processing of power-related words using event-related potentials (ERPs). Participants viewed images of women and men in dominant and submissive postures that were quickly followed by dominant or submissive words. Gender and posture both modulated neural responses in the N2 latency range to dominant words, but for submissive words they had little impact. Thus, in the context of dual-processing theories of person perception, information extracted from both behavior (i.e., posture) and from category membership (i.e., gender) are recruited side-by-side to impact word processing. 相似文献
329.
Ana Morales Dawn C. Allain Patricia Arscott Emily James Gretchen MacCarrick Brittney Murray Crystal Tichnell Amy R. Shikany Sara Spencer Sara M. Fitzgerald-Butt Jessica D. Kushner Christi Munn Emily Smith Katherine G. Spoonamore Harikrishna S. Tandri W. Aaron Kay 《Journal of genetic counseling》2017,26(4):669-688
In the last decade, an increasing number of cardiac conditions have been shown to have a genetic basis. Cardiovascular genetic counseling has emerged as a subspecialty aiming to identify unaffected at-risk individuals. An important sector of this at-risk population also includes expectant mothers, in whom unique clinical challenges may arise. Genetic counselors, especially those in cardiovascular and prenatal settings, have an opportunity to identify and assist women who may benefit from cardiovascular care during pregnancy. This paper provides basic management and genetic evaluation principles for affected women, as well as guidance on identifying those who are at risk. We provide considerations for cardiac surveillance in pregnancy and the post-partum period. Finally, key psychosocial issues that appraise how to best provide support to at risk women as they make informed decisions are discussed. We propose that a team approach including cardiology, maternal fetal medicine, and genetic counseling best serves this patient population. Ongoing questions addressing an evidence based approach to cardiovascular genetic conditions in pregnancy still remain. Thus, well-designed research protocols are essential to mark progress in this area. 相似文献
330.
See the Triumph Healing Arts Workshops for Survivors of Intimate Partner Violence and Sexual Assault
Christine E. Murray Kelly Moore Spencer Jaimie Stickl Allison Crowe 《Journal of Creativity in Mental Health》2017,12(2):192-202
Existing research demonstrates the potential value of arts-based interventions for survivors of abuse and other forms of trauma. The See the Triumph Healing Arts Workshops were designed to provide survivors of intimate partner violence and sexual assault with an opportunity to express themselves and connect with others through arts-based interventions. When appropriate, using the art developed through the workshops to create an art exhibit can be useful for raising awareness and giving voice to survivors in the local community. The preliminary results of the pilot evaluation suggest that the workshops were well-received and allowed participants to experience emotional expression, connection with others, and greater self-awareness. 相似文献