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221.
Alexander Krüger Jan Tünnermann Ingrid Scharlau 《Attention, perception & psychophysics》2017,79(6):1593-1614
For almost three decades, the theory of visual attention (TVA) has been successful in mathematically describing and explaining a wide variety of phenomena in visual selection and recognition with high quantitative precision. Interestingly, the influence of feature contrast on attention has been included in TVA only recently, although it has been extensively studied outside the TVA framework. The present approach further develops this extension of TVA’s scope by measuring and modeling salience. An empirical measure of salience is achieved by linking different (orientation and luminance) contrasts to a TVA parameter. In the modeling part, the function relating feature contrasts to salience is described mathematically and tested against alternatives by Bayesian model comparison. This model comparison reveals that the power function is an appropriate model of salience growth in the dimensions of orientation and luminance contrast. Furthermore, if contrasts from the two dimensions are combined, salience adds up additively. 相似文献
222.
Hervais-Adelman A Davis MH Johnsrude IS Carlyon RP 《Journal of experimental psychology. Human perception and performance》2008,34(2):460-474
Speech comprehension is resistant to acoustic distortion in the input, reflecting listeners' ability to adjust perceptual processes to match the speech input. This adjustment is reflected in improved comprehension of distorted speech with experience. For noise vocoding, a manipulation that removes spectral detail from speech, listeners' word report showed a significantly greater improvement over trials for listeners that heard clear speech presentations before rather than after hearing distorted speech (clear-then-distorted compared with distorted-then-clear feedback, in Experiment 1). This perceptual learning generalized to untrained words suggesting a sublexical locus for learning and was equivalent for word and nonword training stimuli (Experiment 2). These findings point to the crucial involvement of phonological short-term memory and top-down processes in the perceptual learning of noise-vocoded speech. Similar processes may facilitate comprehension of speech in an unfamiliar accent or following cochlear implantation. 相似文献
223.
The present study examined the role of valence in the development of children's implanted false memories. Seventy-six 7-year-old children listened to two true and one false narrative. The false narrative was either neutral ("moving to another classroom") or emotional negative ("being accused by the teacher for copying off your neighbor"). In addition, half of the children were presented with their class photograph while listening to the narratives. During two interviews, children recalled as many details as possible from the true and false events. Results showed that the negative event elicited more false memories than the neutral event. The presentation of a true photograph did not promote the development of false memories. 相似文献
224.
The U-shaped metacontrast function may result from the superimposition of two monotonic components which reflect the effects
of mechanisms similar to the peripheral and central processes suggested for backward pattern masking by Turvey (Psychol Rev
80:1–52, 1973). In an experiment using the disc-ring paradigm, it was demonstrated that the decreasing and increasing branches of the metacontrast
function are differently affected by the exposure duration of the mask and a task-irrelevant stimulus (distractor) appearing
in the contralateral visual hemifield. The phenomenal representation of masking is different for the two parts of the curve.
It is suggested that masking in the second part of the masking function, but not in the first, is related to the control of
visual attention. 相似文献
225.
The Fehrer–Raab effect (simple reaction time is unaffected by metacontrast masking of the test stimulus) seems to imply that
a stimulus can trigger a voluntary reaction without reaching a conscious representation. However, it is also possible that
the mask triggers the reaction, and that the masked test stimulus causes a focussing of attention from which processing of
the mask profits, thus reaching conscious representation earlier. This is predicted by the Weather Station Model of visual
masking. Three experiments tested this explanation. Experiment 1 showed that the masked test stimulus caused a temporal shift
of the mask. Experiment 2 showed that the reaction in the Fehrer–Raab effect was not exclusively triggered by a conscious
representation of the test stimulus: the mask was involved in evoking the reaction. Experiment 3 again revealed a temporal
shift of the mask. However, the shift was only about half as large as the Fehrer–Raab effect. The psychometric functions suggested
that the observers used two different cues for their temporal order judgments. The results cast doubts on whether judged temporal
order yields a direct estimate of the time of conscious perception. Some methodological alternatives are discussed. 相似文献
226.
Ingrid Scharlau 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》2004,57(8):1411-1436
The spatial distribution of visual attention is a yet unresolved question. One of the main topics is whether attention is distributed in a graded fashion around an attended location (e.g., Downing, 1988; Zimba & Hughes, 1987). The present experiments explore whether, and on which conditions, gradients of attention arise and contribute to perceptual facilitation. A masked or unmasked prime precedes one of two targets whose temporal order has to be judged. The prime captures attention, which shortens the perceptual latency of the primed target (perceptual latency priming; Scharlau & Neumann, 2003a; Shore, Spence, & Klein, 2001). No strong evidence for an attentional gradient was found. (1) Accuracy of temporal order judgements was independent of the distance between the two targets that were judged. That is, facilitation of the second target by the first target was spatially invariant. (2) With targets of short duration, facilitation was independent of prime-target distance. (3) With targets of long duration, gradients were found: Facilitation declined continuously with distance. Thus, long duration of stimuli may be a sufficient precondition for an attentional gradient. A control experiment showed that object-based attention contributes only marginally to perceptual latency priming. 相似文献
227.
Esteban V. Cardemil Saeromi Kim Tatiana Davidson Ingrid A. Sarmiento Rachel Zack Ishikawa Monica Sanchez Sandra Torres 《Cognitive and behavioral practice》2010,17(2):188-197
This paper describes the experiences of the first author and his colleagues in the development and implementation of a depression prevention program that specifically targets Latina mothers. Building on the earlier papers that highlight the underutilization of mental health services by Latinos in general, this paper will make the case that the situation is particularly concerning with regards to depression. In addition to the fact that depression is a highly prevalent disorder among Latino adults, the potential consequences for children of parents with depression are significant. Thus, the underutilization of formal mental health services by Latinos makes depression a critical public health problem that calls for creative solutions. One possible solution is the careful development and implementation of prevention programs. Depression prevention programs have some advantages over formal mental health treatment in that they can be offered at a relatively low cost, can be packaged in ways that make them less stigmatizing, and if effective, can reduce the incidence of cases that develop into clinical depression.This paper will describe the process of developing a novel depression prevention program, with a particular focus on the attention paid to cultural sensitivity. We describe the complexity inherent in defining cultural sensitivity and illustrate in concrete ways its implementation in the development and evaluation of the prevention program. In addition, we explore some of the challenges that emerge when attempting to balance the creation of a program that is culturally sensitive with the demands of rigorous quantitative evaluation. 相似文献
228.
Text cues facilitate the perception of spoken sentences to which they are semantically related (Zekveld, Rudner, et al., 2011). In this study, semantically related and unrelated cues preceding sentences evoked more activation in middle temporal gyrus (MTG) and inferior frontal gyrus (IFG) than nonword cues, regardless of acoustic quality (speech in noise or speech in quiet). Larger verbal working memory (WM) capacity (reading span) was associated with greater intelligibility benefit obtained from related cues, with less speech-related activation in the left superior temporal gyrus and left anterior IFG, and with more activation in right medial frontal cortex for related versus unrelated cues. Better ability to comprehend masked text was associated with greater ability to disregard unrelated cues, and with more activation in left angular gyrus (AG). We conclude that individual differences in cognitive abilities are related to activation in a speech-sensitive network including left MTG, IFG and AG during cued speech perception. 相似文献
229.
Joseph G. Ponterotto Charlene M. Alexander Ingrid Grieger 《Journal of multicultural counseling and development》1995,23(1):11-20
This brief report presents a Multicultural Competency Checklist that can be used by counseling training programs as a pragmatic guide in multicultural program development. The Checklist includes 22 items organized along six major themes: minority representation, curriculum issues, counseling practice and supervision, research considerations, student and faculty competency evaluation, and physical environment. Guidelines for using the Checklist are provided. 相似文献
230.
Christina G. S. Palmer Allyn McConkie-Rosell Ingrid A. Holm Kimberly LeBlanc Janet S. Sinsheimer Naghmeh Dorrani Matthew R. Herzog Sharyn Lincoln Kelly Schoch Rebecca C. Spillmann Elly Brokamp Undiagnosed Diseases Network 《Journal of genetic counseling》2018,27(5):1087-1101
The burden of living with an undiagnosed condition is high and includes physical and emotional suffering, frustrations, and uncertainty. For patients and families experiencing these stressors, higher levels of empowerment may be associated with better outcomes. Thus, it is important to understand the experiences of patients with undiagnosed conditions and their families affected by undiagnosed conditions in order to identify strategies for fostering empowerment. In this study, we used the Genetic Counseling Outcome Scale (GCOS-24) to assess levels of empowerment and support group participation in 35 adult participants and 67 parents of child participants in the Undiagnosed Diseases Network (UDN) prior to their UDN in-person evaluation. Our results revealed significantly lower empowerment scores on the GCOS-24 in adult participants compared to parents of child participants [t(100)?=???3.01, p?=?0.003, average difference?=???11.12, 95% CI (??3.78, ??18.46)] and no significant association between support group participation and empowerment scores. The majority of participants (84.3%, 86/102) are not currently participating in any support groups, and participation rates were not significantly different for adult participants and parents of child participants (11.4 vs. 19.7%, respectively, FE p?=?0.40). Open-ended responses provided additional insight into support group participation, the challenges of living with undiagnosed conditions, and positive coping strategies. Future research will evaluate the extent to which empowerment scores change as participation in the UDN unfolds. 相似文献