When words and space collide: Spatial attention interacts with lexical access during word recognition

Recent research has suggested an important role for spatial attention in reading, however the nature of this influence is unclear. Further, it has been shown that intention to engage in linguistic processing can enhance lexical processing. Therefore, we developed a novel paradigm to examine the impact of spatial attention on primed and unprimed lexical processing. In a lexical decision task, targets were preceded by a cue to lexical access and spatial location simultaneously. Results indicated that on spatially valid trials, the lexical cuing effect was large and word processing was enhanced, suggesting that spatial attention influences lexical access. On spatially invalid trials, lexical cuing effects were significantly decreased, resulting in a spatial cuing by lexical cuing interaction. Results from this experiment provide evidence that spatial attention interacts with lexical access during word processing. This novel paradigm provides a new avenue for exploring the relations between spatial attention and reading processes.     

Why did Tiger Woods shoot 82? A commentary on

In a recent article, Toner and Moran (2015) argued that athletes need to pay conscious attention to body movements, and that an external focus of attention would not be effective for continued improvement at the elite level. Their arguments appear to be based on misunderstandings of the attentional focus literature. In this commentary, I clarify that adopting an external focus does not imply that performers are not aware of their body movements. Rather, an external focus (i.e., focusing attention of the intended movement effect) refers to the preparation of movement execution. I maintain that an external focus is necessary to optimize performance and learning at any level of performance.     

Emotional stimuli facilitate time perception in children with attention‐deficit/hyperactivity disorder

The aim of this study was to compare the effect of different emotional stimuli (neutral, positive, and negative) on time perception in children with attention‐deficit/hyperactivity disorder (ADHD) and normal children in dual‐task form. Five hundred and ninety‐nine students from primary schools were randomly selected. The Conner's Teacher Rating Scale (CTRS) questionnaire was completed by teachers. A total of 100 children with a score above the cut‐off point for the CTRS were further assessed using the Child Symptom Inventory‐4 (CSI‐4). A total of 34 children with ADHD and 31 controls completed an emotional time discrimination task in two blocks of 1000 and 2000 ms duration. Children were asked to compare three image groups: neutral with neutral, neutral with positive, and neutral with negative images. Children with ADHD had significantly better performance in the emotional time discrimination task across all conditions when compared with controls: On average, discrimination thresholds were approximately 35 ms shorter for the children with ADHD. Our results indicate that children with ADHD have higher sensitivity to time relative to controls in a situation in which they must distribute resources between temporal and emotional processing. On the basis of the interference effect and the working memory capacity hypothesis, this dividing of attention causes a decrease of time accuracy in normal children.     

海洛因戒断者吸毒及情绪注意偏向的ERP研究

海洛因戒断组对吸毒、正、负性线索注意偏向是理解戒断者复吸脑机制的重要手段之一。研究采用dot-probe实验范式,海洛因戒断组及正常被试各10名,分别记录64个电极点脑电数据。结果表明,戒断者吸毒线索注意偏向P200振幅显著高于正负性情绪线索,也显著高于正常组,提示戒断者存在吸毒线索注意偏向;N300振幅显著低于正常组,说明戒断者具有较低的情绪评价;吸毒线索诱发P300振幅显著高于正常组,表明戒断组对吸毒线索可能附加情绪加工。     

工作记忆新探:基于个体差异的研究

近年来对工作记忆的研究开始关注个体差异的理论分析。经典的工作记忆模型得到了发展,引入情境缓冲系统作为多成分模型的一部分,这是对个体经验的重视。传统衡量个体差异的主要指标短时记忆容量(组块)、智力(g)等逐步被工作记忆指标发展替代:如执行性注意控制、工作记忆广度等。工作记忆的个体差异本质上是否与智力的差异具有同构性的焦点引起了广泛关注。在今后的研究中,关于领域一般性与特殊性的及神经生理学等方向可能是厘清工作记忆个体差异的主流趋势。     

与用客体表征连续性解释OSPBs效应的商榷

Mitroff等人的研究发现了OSPBs效应量反映的客体运动方式与主观报告结果相分离的现象,并以两可刺激情景或实体性原则违背假设对该现象作了解释。本文以3个实验与其研究进行了商榷。结果表明,两可刺激情景与实体性违背均不能解释上述分离现象(实验1);其实验范式中混入了距离因素(实验2与实验3)和方位朝向因素(实验1)。基于本研究的结果,笔者认为Mitroff等人的OSPBs效应是由距离效应和方位倾斜效应所致,即可能主要反映了基于空间的选择性注意的影响,而不能以客体表征连续性加以解释。     

FREE WILL AND LUCK

I present an account of how agents can know what they are doing when they intentionally execute object-oriented actions. When an agent executes an object-oriented intentional action, she uses perception in such a way that it can fulfil a justificatory role for her knowledge of her own action and it can fulfil this justificatory role without being inferentially linked to the cognitive states that it justifies. I argue for this proposal by meeting two challenges: in an agent's knowledge of her action perception can only play an enabling role (and no justificatory role) for the agent's knowledge and if perception has a justificatory role, then the agent's knowledge must be inferential.     

Gaze and arrow distractors influence saccade trajectories similarly

Perceiving someone's averted eye-gaze is thought to result in an automatic shift of attention and in the preparation of an oculomotor response in the direction of perceived gaze. Although gaze cues have been regarded as being special in this respect, recent studies have found evidence for automatic attention shifts with nonsocial stimuli, such as arrow cues. Here, we directly compared the effects of social and nonsocial cues on eye movement preparation by examining the modulation of saccade trajectories made in the presence of eye-gaze, arrows, or peripheral distractors. At a short stimulus onset asynchrony (SOA) between the distractor and the target, saccades deviated towards the direction of centrally presented arrow distractors, but away from the peripheral distractors. No significant trajectory deviations were found for gaze distractors. At the longer SOA, saccades deviated away from the direction of the distractor for all three distractor types, but deviations were smaller for the centrally presented gaze and arrow distractors. These effects were independent of whether line-drawings or photos of faces were used and could not be explained by differences in the spatial properties of the peripheral distractor. The results suggest that all three types of distractors (gaze, arrow, peripheral) can induce the automatic programming of an eye movement. Moreover, the findings suggest that gaze and arrow distractors affect oculomotor preparation similarly, whereas peripheral distractors, which are classically regarded as eliciting an automatic shift of attention and an oculomotor response, induce a stronger and faster acting influence on response preparation and the corresponding inhibition of that response.     

The role of visual spatial attention in adult developmental dyslexia

The present study investigated the nature of visual spatial attention deficits in adults with developmental dyslexia, using a partial report task with five-letter, digit, and symbol strings. Participants responded by a manual key press to one of nine alternatives, which included other characters in the string, allowing an assessment of position errors as well as intrusion errors. The results showed that the dyslexic adults performed significantly worse than age-matched controls with letter and digit strings but not with symbol strings. Both groups produced W-shaped serial position functions with letter and digit strings. The dyslexics' deficits with letter string stimuli were limited to position errors, specifically at the string-interior positions 2 and 4. These errors correlated with letter transposition reading errors (e.g., reading slat as “salt”), but not with the Rapid Automatized Naming (RAN) task. Overall, these results suggest that the dyslexic adults have a visual spatial attention deficit; however, the deficit does not reflect a reduced span in visual–spatial attention, but a deficit in processing a string of letters in parallel, probably due to difficulty in the coding of letter position.     

The contributions of arousal and self-focused attention to avoidance in social anxiety

Abstract

Fear of blushing is a specific syndrome generally subsumed under the diagnostic category of social anxiety disorder (SAD). This study aims at gathering preliminary data about an intensive weekend intervention specifically designed for individuals with fear of blushing as the predominant complaint. Treatment consisted of a combination of attention training and behavioral therapy. Thirty-one blushing-fearful individuals meeting the criteria for SAD following the Diagnostic and Statistical Manual of Mental Disorders IV (DSM-IV) were treated in three groups. The study was conducted as an open trial. Full assessments were performed before treatment, six weeks after treatment, and at six-month follow-up. Only fear of blushing, the main outcome criterion, was assessed immediately before and after the treatment weekend. The intensive therapy program was well accepted. Fear of blushing and SAD were significantly reduced and reductions remained stable. At follow-up, nearly two-thirds of the participants achieved significant changes in fear of blushing. Despite the preliminary nature of this study, the condensed format of weekend therapy for treating fear of blushing calls for further investigation.