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911.
Cunningham WA Johnson MK Raye CL Chris Gatenby J Gore JC Banaji MR 《Psychological science》2004,15(12):806-813
In a study of the neural components of automatic and controlled social evaluation, White participants viewed Black and White faces during event-related functional magnetic resonance imaging. When the faces were presented for 30 ms, activation in the amygdala-a brain region associated with emotion-was greater for Black than for White faces. When the faces were presented for 525 ms, this difference was significantly reduced, and regions of frontal cortex associated with control and regulation showed greater activation for Black than White faces. Furthermore, greater race bias on an indirect behavioral measure was correlated with greater difference in amygdala activation between Black and White faces, and frontal activity predicted a reduction in Black-White differences in amygdala activity from the 30-ms to the 525-ms condition. These results provide evidence for neural distinctions between automatic and more controlled processing of social groups, and suggest that controlled processes may modulate automatic evaluation. 相似文献
912.
A Critical Review of the Clinical Effects of Therapeutic Irradiation Damage to the Brain: The Roots of Controversy 总被引:14,自引:0,他引:14
We critically examined the damaging affects of therapeutic irradiation by comparing results from cross-disciplinary studies of early- and late-delayed radiotherapy effects. Focus is attained by concentrating on clinical treatment issues (volume of brain, dose, timing of effects, age, modality types, and stereotactic treatment techniques), rather than on methodological means or problems, which is necessary to understand the mechanisms and characteristics of radiotherapy-induced behavioral dysfunction including cognition. We make observations and hypotheses about the actual risks from radiotherapy that could be informative in the treatment decision process, and which may lessen the concerns of some patients and their families about the risks they take when receiving radiation. Conditions that predispose to radiation injury are reviewed: (1) higher doses even to part of the brain versus lower doses to the whole brain, (2) combined treatment modalities, (3) malignancy itself, (4) radiation early during postnatal brain development, and (5) late-delayed effects (more than 3 years posttreatment). Current neurocognitive frameworks for understanding cognitive change over time in children and adults are summarized, along with the literature on effects of brain tumors and treatment on depression. No studies have as yet identified candidate brain regions that are more sensitive to radiotherapy. Two studies have provided early, preliminary evidence for a specific vulnerability of visual attention/memory to the early stage of late radiation damage. Furthermore, radiation effects appear severe only in a minority of patients. Risk is related to direct and indirect effects of cancer type, concurrent clinical factors, and premorbid risk factors. 相似文献
913.
Magai C Consedine NS Krivoshekova YS Kudadjie-Gyamfi E McPherson R 《Psychology and aging》2006,21(2):303-317
This investigation represents a multimodal study of age-related differences in experienced and expressed affect and in emotion regulatory skills in a sample of young, middle-aged, and older adults (N=96), testing formulations derived from differential emotions theory. The experimental session consisted of a 10-min anger induction and a 10-min sadness induction using a relived emotion task; participants were also randomly assigned to an inhibition or noninhibition condition. In addition to subjective ratings of emotional experience provided by participants, their facial behavior was coded using an objective facial affect coding system; a content analysis also was applied to the emotion narratives. Separate repeated measures analyses of variance applied to each emotion domain indicated age differences in the co-occurrence of negative emotions and co-occurrence of positive and negative emotions across domains, thus extending the finding of emotion heterogeneity or complexity in emotion experience to facial behavior and verbal narratives. The authors also found that the inhibition condition resulted in a different pattern of results in the older versus middle-aged and younger adults. The intensity and frequency of discrete emotions were similar across age groups, with a few exceptions. Overall, the findings were generally consistent with differential emotions theory. 相似文献
914.
The widely used Social Interaction Anxiety Scale (SIAS; R. P. Mattick & J. C. Clarke, 1998) possesses favorable psychometric properties, but questions remain concerning its factor structure and item properties. Analyses included 445 people with social anxiety disorder and 1,689 undergraduates. Simple unifactorial models fit poorly, and models that accounted for differences due to item wording (i.e., reverse scoring) provided superior fit. It was further found that clients and undergraduates approached some items differently, and the SIAS may be somewhat overly conservative in selecting analogue participants from an undergraduate sample. Overall, this study provides support for the excellent properties of the SIAS's straightforwardly worded items, although questions remain regarding its reverse-scored items. 相似文献
915.
Inflammatory bowel disease (IBD) is an umbrella term referring to two chronic idiopathic intestinal diseases: ulcerative colitis (UC) and Crohn’s disease (CD). Both UC and CD are characterized by immune activation that leads to symptoms, but the location, severity and behavior of the inflammation varies among individuals and in characteristic ways between UC and CD. A majority of patients with IBD are diagnosed in young adulthood, but the response to therapy is variable and difficult to predict, with some patients demonstrating a prompt and effective remission while others have continuous symptoms that do not respond to existing medical options. Surgery remains a frequent and necessary occurrence among patients with IBD, but in UC it is considered curative, while in CD only temporizing. Clinical observations, epidemiological studies, and molecular genetics have provided strong evidence that both genetic and environmental factors are important determinants for disease susceptibility. In recent years, a number of genes have been identified that associate with CD and UC, although the clinical utility of these discoveries in patients or in susceptible family members has not been determined. Nonetheless, it is hoped that these fundamental advances in our understanding of IBD will lead to better therapies for patients and prevention strategies for those who are susceptible. Effective incorporation of clinical genetic testing for IBD into practice will require appropriate education and counseling. 相似文献
916.
More than 50 years after the appearance of the motor theory of speech perception, it is timely to evaluate its three main
claims that (1) speech processing is special, (2) perceiving speech is perceiving gestures, and (3) the motor system is recruited
for perceiving speech. We argue that to the extent that it can be evaluated, the first claim is likely false. As for the second
claim, we review findings that support it and argue that although each of these findings may be explained by alternative accounts,
the claim provides a single coherent account. As for the third claim, we review findings in the literature that support it
at different levels of generality and argue that the claim anticipated a theme that has become widespread in cognitive science. 相似文献
917.
Walthew C Gilchrist ID 《Journal of experimental psychology. Human perception and performance》2006,32(5):1294-1301
Target location probability was manipulated in a visual search task. When the target was twice as likely to appear on 1 side of the display as the other, manual button-press response times were faster (Experiment 1A) and first saccades were more frequently directed (Experiment 1B) to the more probable locations. When the target appeared with equal probability at each location in this search task, performance benefited from repetition of target location in the preceding trials (Experiment 2). When the trial sequence was constrained so that target location did not repeat within a series of 4 trials, there was no longer an advantage for more probable locations (Experiment 3). The authors conclude that the search benefits for more probable locations resulted from short-term target location repetitions. 相似文献
918.
An expressive disturbance of speech prosody has long been associated with idiopathic Parkinson's disease (PD), but little is known about the impact of dysprosody on vocal-prosodic communication from the perspective of listeners. Recordings of healthy adults (n=12) and adults with mild to moderate PD (n=21) were elicited in four speech contexts in which prosody serves a primary function in linguistic or emotive communication (phonemic stress, contrastive stress, sentence mode, and emotional prosody). Twenty independent listeners naive to the disease status of individual speakers then judged the intended meanings conveyed by prosody for tokens recorded in each condition. Findings indicated that PD speakers were less successful at communicating stress distinctions, especially words produced with contrastive stress, which were identifiable to listeners. Listeners were also significantly less able to detect intended emotional qualities of Parkinsonian speech, especially for anger and disgust. Emotional expressions that were correctly recognized by listeners were consistently rated as less intense for the PD group. Utterances produced by PD speakers were frequently characterized as sounding sad or devoid of emotion entirely (neutral). Results argue that motor limitations on the vocal apparatus in PD produce serious and early negative repercussions on communication through prosody, which diminish the social-linguistic competence of Parkinsonian adults as judged by listeners. 相似文献
919.
Penner C 《The journal of pastoral care & counseling : JPCC》2006,60(3):241-245
This essay details the challenges of ministry in a psychiatric hospital. Using a narrative approach through the use of three case studies, the article suggests that commonly used pastoral techniques are ineffectual with people who have severe schizophrenia. The author explores the theological implications of ministry with few tools, as well as reflecting on the presence of God with those who suffer. 相似文献
920.
Reports of sex differences in language processing are inconsistent and are thought to vary by task type and difficulty. In two experiments, we investigated a sex difference in visual influence onheard speech (the McGurk effect). First, incongruent consonant-vowel stimuli were presented where the visual portion of the signal was brief (100 msec) or full (temporally equivalent to the auditory). Second, to determine whether men and women differed in their ability to extract visual speech information from these brief stimuli, the same stimuli were presented to new participants with an additional visual-only (lipread) condition. In both experiments, women showed a significantly greater visual influence on heard speech than did men for the brief visual stimuli. No sex differences for the full stimuli or in the ability to lipread were found. These findings indicate that the more challenging brief visual stimuli elicit sex differences in the processing of audiovisual speech. 相似文献