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181.
返回抑制(IOR)是指注意过程中个体对已搜索过的位置进行抑制, 从而在随后该位置上出现目标时发生注意重新定向或反应变慢的过程。本研究使用ERPs技术, 采用线索-靶子范式, 考察了情绪目标辨别任务中IOR的发生过程及二者的神经机制。结果发现, 与无效线索相比, 有效线索下的P1波幅更小, N1波幅更大, 正性、负性面孔N170的波幅比中性面孔大。表明当要求被试做情绪辨别任务时, IOR与对情绪信息的反应之间发生了分离, 表现出情绪加工的优先。这说明IOR和情绪偏向是发生在两种不同神经通路上的适应机制, 也为进一步探究注意与情绪的关系问题提供了来自神经电生理学的证据。 相似文献
182.
David De Vito 《Visual cognition》2013,21(8):583-600
ABSTRACTThe multiple state theory of working memory suggests that representations are divided into two states: focused-on active representations and accessory memories held for later use. Here we tested two competing hypotheses regarding the neurocognitive mechanisms responsible for this separation: (1) that accessory memories undergo inhibition or (2) that accessory memories are amplified less than active representations. We explored whether accessory memories undergo affective devaluation, a known index of the involvement of inhibition in a visual task. On each trial participants memorized four items, were cued to focus on one, and then completed a visual search or an affective evaluation task. While search distractors matching the colour of an active item slowed search, those matching an accessory memory did not, replicating previous findings that only active items guide search. Also, accessory items were affectively devalued compared to baseline and active items, supporting the hypothesis that accessory memories undergo inhibition. 相似文献
183.
AbstractThe Default Interventionist account suggests that by default, we often generate belief-based responses when reasoning and find it difficult to draw the logical inference. Recent research, however, shows that in some instances belief judgments take longer, are more prone to error and are more affected by cognitive load. One interpretation is that some logical inferences are available automatically and require intervention in order to respond according to beliefs. In two experiments, we investigate the effortful nature of belief judgments and the automaticity of logical inferences by increasing the inhibitory demands of the task. Participants were instructed to judge conclusion validity, believability and either font colour or font style, to increase the number of competing responses. Results showed that conflict more strongly affects judgments of believability than validity and when inhibitory demands are increased, the validity of an argument impacts more on belief judgments. These findings align with the new Parallel Processing model of belief bias. 相似文献
184.
185.
In 2 experiments (N = 10, Experiment 1; N = 16, Experiment 2), the authors investigated whether evidence for response facilitation and subsequent inhibition elicited by masked prime stimuli can be observed for output modalities other than manual responding. Masked primes were followed by target stimuli that required a 2-choice manual, saccadic, or vocal response. Performance was measured for compatible trials in which primes and targets were identical and for incompatible trials in which they were mapped to opposite responses. When primes were presented centrally, performance benefits were obtained for incompatible trials; whereas for peripherally presented primes, performance benefits were found in compatible trials. That pattern of results was obtained for manual responses and for saccadic eye movements (Experiment 1), demonstrating that those effects are not mediated by specialized dorsal pathways involved in visuomanual control. An analogous pattern of effects was found when manual and vocal responses were compared (Experiment 2). Because vocal responding is controlled by the inferotemporal cortex, that result shows that prime-target compatibility effects are not primarily mediated by the dorsal stream, but appear to reflect modality-unspecific visuomotor links that allow rapid activation of motor responses that may later be subject to inhibition. 相似文献
186.
The present study investigated interactions between working memory load and perceptual load. The load theory (Lavie, Hirst, de Fockert, &; Viding, 2004) claims that perceptual load decreases distractor interference, whereas working memory load increases interference. However, recent studies showed that effects of working memory might depend on the relationship between modalities of working memory and task stimuli. Here, we examined whether the relationship between working memory load and perceptual load would remain the same across modalities. The results of Experiment 1 showed that verbal working memory load did not affect a compatibility effect for low perceptual load, whereas it increased the compatibility effect for high perceptual load. In Experiment 2, the compatibility effect remained the same regardless of visual working memory load. These results suggest that the effects of working memory load and perceptual load depend on the relationship between the modalities of working memory and stimuli. 相似文献
187.
Anja Ullrich Marjorie Carroll Joyce Prigot Jeffrey Fagen 《The Journal of genetic psychology》2013,174(3):340-359
Researchers assessed 58 preschoolers' reactions to an unfamiliar person and unfamiliar objects in their familiar home environment. Children participated in a 30-min procedure designed to elicit behavioral inhibition, including (a) a free-play period with a stranger present, (b) a structured interaction with the stranger, and (c) uncertainty-eliciting tasks. Behaviors representing the child's reactions toward the mother, stranger, and novel objects were coded. Mothers completed a temperament scale. Preschoolers exhibited behaviors indicative of inhibition toward unfamiliar social and nonsocial stimuli; behaviors remained stable across increasingly intrusive episodes. The approach/withdrawal component of temperament was related to behavioral inhibition. Individual differences in mood did not appear to be related to differences in inhibition. Parent reported temperament was related to researcher-observed behaviors. 相似文献
188.
Ashley C. King 《The Journal of genetic psychology》2013,174(4):414-432
In this study the author examined the developmental differences in inhibition and cognition of 4–8-year-old children as a function of the suggested presence of a supernatural agent. Previous evolutionarily-relevant research has suggested that humans are naturally primed to think in terms of supernatural agents and that, given the correct context, individuals readily accept novel supernatural entities and alter their behavior accordingly. All children in this study played 4 games designed to assess their present level of inhibitory and cognitive development. Children in the experimental condition were also introduced to an invisible Princess Alice and were told that she was watching during the games. Following these measures, all children engaged in a resistance-to-temptation task. Results revealed that cognitively advanced children were more likely to express belief in Princess Alice than were less cognitively advanced children. This research provides support that cognitive maturity, rather than immaturity, may be necessary for children to express belief in novel supernatural agents. 相似文献
189.
To investigate attentional capture by face’s race, the current study recorded saccade latencies of eye movement measurements in an inhibition of return (IOR) task. Compared to Caucasian (other‐race) faces, Chinese (own‐race) faces elicited longer saccade latency. This phenomenon disappeared when faces were inverted. The results indicated that own‐race faces capture attention automatically with high‐level configural processing. 相似文献
190.
Maria Balle Miquel Tortella‐Feliu Xavier Bornas 《International journal of psychology》2013,48(5):964-977
The aim of the study was to explore the psychophysiological concomitants of self‐reported behavioral inhibition system (BIS) sensitivity in adolescents (12 to 17 years old) supposed to be at risk for anxiety disorders. Twenty participants with high scores in self‐reported BIS sensitivity (at‐risk group) were matched in age and sex to 20 participants scoring in the normal range in BIS sensitivity (control group). Negative affect, negative emotion regulation style, and anxiety symptomatology were assessed by means of self‐reported measures. Cardiac and electrodermal response signals were recorded during baseline, paced breathing, exposure to an attentional task with response cost and fear‐relevant slides conditions. The at‐risk group exhibited higher scores on measures of negative affect, negative emotion regulation style, and anxiety symptomatology than their control counterparts. After controlling for negative styles of emotion regulation, groups did not differ in skin conductance reactivity during the attentional task with response cost, but participants at risk exhibited more nonspecific skin conductance responses than the control group during baseline recording. Regarding the cardiac concomitants, participants at risk presented lower vagal tone at resting conditions as compared to participants in the control group. Additionally, at‐risk participants exhibited lower flexibility across experimental conditions in heart rate and cardiac sample entropy measures than participants in the control group. These findings add knowledge on psychophysiological concomitants of BIS sensitivity and are discussed in light of associations between temperament and development of anxiety disorders in youth. They show how psychophysiological patterns observed in resting conditions could be useful endophenotypes to reliably detect individuals at risk before the disorder onset. 相似文献