eye-tracker

眼动仪
  • 文章类型: Journal Article
    先前的研究表明,欺凌经历与欺凌动态中的不同解释和行为方式有关。然而,在信息处理的第一步:注意力的分配中,这些区别是否已经存在仍然不确定。
    该研究探索了在日常生活中具有不同欺凌经历的意大利学生的注意模式,同时观察通过欺凌小插曲代表的不同角色。
    参与者(72名学生,法师=11.18)被归类为受害者,欺凌受害者,或者根据他们在自我报告问卷上的分数不参与。他们观察到9个欺凌小插图,上面展示了不同的肖像(欺凌,受害者,亲欺凌者,辩护人,旁观者),而眼睛跟踪器记录了注意力指数(固定,访问和持续时间)。
    Kruskal-Wallis和成对比较显示,欺凌者和亲欺凌者的肖像具有显着影响,因为欺凌者比受害者表现出更大的关注和访问,而未参与的学生与其他组没有显着差异。
    我们的研究表明,欺凌受害者更多地关注威胁线索,而受害者则将目光与他们分开,确认欺凌的经历会影响他们如何探索攻击性情况。学习参与的学生如何引导他们的注意力有助于我们理解不同的反应,导致强有力的干预。
    UNASSIGNED: Previous research showed that bullying experiences are associated with different ways of interpreting and behaving in bullying dynamics. However, it remains uncertain whether these distinctions can already be present during the first step of information processing: the allocation of attention.
    UNASSIGNED: The study explored attentional patterns of Italian students with different bullying experiences in daily life while observing different roles represented through bullying vignettes.
    UNASSIGNED: Participants (72 students, Mage= 11.18) were categorized as victims, bully-victims, or not involved based on their scores on a self-report questionnaire. They observed 9 bullying vignettes on which different portraits were presented (bully, victim, pro-bully, defender, bystander) while the eye-tracker registered attentional indexes (fixation, visit and duration).
    UNASSIGNED: Kruskal- Wallis and pairwise comparisons revealed a significant effect for the portraits of the bully and the pro-bully as bully-victims exhibited greater fixations and visits than victims, while students not involved showed no significant differences with the other groups.
    UNASSIGNED: Our research reveals that bully-victims focused more on threatening cues while victims diverged their gaze from them, confirming that the experience of bullying influences how they explore aggressive situations. Learning how involved students direct their attention helps us understand different responses, leading to powerful interventions.
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  • 文章类型: Journal Article
    自闭症谱系条件(ASC)的核心特征是社交互动中存在困难。这可以通过对社会信息的非典型注意处理来解释:患有ASC的个人可能会表现出将注意力定向到与社会相关的刺激和/或抑制他们对无关的注意力反应的问题。为了阐明这个问题,我们检查了对情绪刺激的注意取向和抑制控制(愤怒,快乐,和中性面孔)。对29名ASC儿童和27名具有典型发育(TD)儿童的最终样本进行了反扫视任务(同时使用前视和反扫视)。尽管患有ASC的孩子在看到愤怒的面孔时犯了更多的反扫视错误,而不是快乐或中立的面孔,与中性面孔相比,TD儿童在遇到快乐面孔时会犯更多的反扫视错误。此外,ASC患儿的前视阻滞和抗扫视阻滞潜伏期更长,并且与ASC症状的严重程度相关.因此,当出现愤怒的面孔时,患有ASC的儿童表现出抑制控制受损。这种对负面高唤醒信息的偏见与ASC的情感信息处理理论是一致的,这表明威胁性刺激会在ASC中引起压倒性的反应。将注意力转移到情绪刺激(即面部)的治疗策略可以改善ASC症状学及其社交功能。
    A core feature of Autistic Spectrum Condition (ASC) is the presence of difficulties in social interactions. This can be explained by an atypical attentional processing of social information: individuals with ASC may show problems with orienting attention to socially relevant stimuli and/or inhibiting their attentional responses to irrelevant ones. To shed light on this issue, we examined attentional orienting and inhibitory control to emotional stimuli (angry, happy, and neutral faces). An antisaccade task (with both prosaccade and antisacade blocks) was applied to a final sample of 29 children with ASC and 27 children with typical development (TD). Whereas children with ASC committed more antisaccade errors when seeing angry faces than happy or neutral ones, TD children committed more antisaccade errors when encountering happy faces than neutral faces. Furthermore, latencies in the prosaccade and antisaccade blocks were longer in children with ASC and they were associated with the severity of ASC symptoms. Thus, children with ASC showed an impaired inhibitory control when angry faces were presented. This bias to negative high-arousal information is congruent with affective information-processing theories on ASC, suggesting that threatening stimuli induce an overwhelming response in ASC. Therapeutic strategies where train the shift attention to emotional stimuli (i.e. faces) may improve ASC symptomatology and their socials functioning.
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  • 文章类型: Journal Article
    自从COVID-19大流行开始以来,远程工作和教育以及数字显示的使用变得越来越普遍。然而,与印刷材料相比,数字显示器会导致更多的眼睛疲劳,并可能降低任务性能。例如,监视器上的反射会导致不适或分心,特别是当眩光监视器与黑色背景一起使用时。
    这项研究同时使用脑电图(EEG)和眼睛跟踪器来测量使用眩光监视器对句子难以辨认的可能负面影响。
    实验结果表明,眩光和非眩光监视器之间的阅读时间和主观难以辨认等级没有差异。然而,有眩光监视器,当阅读持续更长时间时,眼睛的固定。Further,EEGβ(15-20Hz)功率变化表明,当使用黑色背景的眩光监视器时,参与者对阅读任务的参与度较低。
    这些结果表明,使用眩光监视器的负面影响是微妙的,但肯定存在。他们还表明,脑电图和眼动追踪等生理措施可以客观地评估微妙的影响,即使行为测量,如主观难以辨认等级或阅读时间可能不会显示差异。
    Since the COVID-19 pandemic started, remote work and education and digital display use have become more prevalent. However, compared with printed material, digital displays cause more eye fatigue and may decrease task performance. For instance, the reflections on the monitor can cause discomfort or distraction, particularly when glare monitors are used with black backgrounds.
    This study simultaneously uses electroencephalography (EEG) and an eye-tracker to measure the possible negative effects of using a glare monitor on the illegibility of sentences.
    The experiment results showed no difference in reading time and subjective illegibility rating between glare and non-glare monitors. However, with glare monitors, eye fixation when reading lasted longer. Further, EEG beta (15-20 Hz) power variations suggested that the participants were less engaged in the reading task when a glare monitor was used with a black background.
    These results indicate that the negative effects of using a glare monitor are subtle but certainly present. They also show that physiological measures such as EEG and eye tracking can assess the subtle effects in an objective manner, even if behavioral measures such as subjective illegibility ratings or reading time may not show the differences.
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  • 文章类型: Journal Article
    BACKGROUND: The purpose of this study was to evaluate ocular motility in normal young adults when performing the Developmental Eye Movement (DEM) test using an infrared eye-tracker in a sample of young subjects without visual dysfunctions.
    METHODS: An optometric evaluation was carried out on 52 participants with a mean age of 21.00 ± 3.22 years to verify they did not have any binocular dysfunction, by completing a computerized version of the DEM test while their eye movements were recorded with an eye-tracker. A custom-written software was developed to analyse some specific parameters of ocular motility while performing each subtest (Test A, Test B and Test C) of the complete DEM test.
    RESULTS: The mean duration of the fixations was shorter in Test C (243.56 ± 46.18 s) than in Test A (493.52 ± 171.41 s) and Test B (484.20 ± 156.59 s). The mean adjusted horizontal (AdjHT: 35.24 ± 6.68 s) and vertical (VT: 33.58 ± 5.56 s) times were at the 45th and at the 40th percentile, respectively. In Test C, there was a high positive significant correlation between the saccadic speed (cc: 0.77; p < 0.001) and the saccadic length (cc: 0.74; p < 0.001) of both eyes.
    CONCLUSIONS: The eye-tracker is an objective method to evaluate the DEM test in subjects without binocular dysfunctions, measuring and quantifying ocular motility parameters that are impossible with the traditional subjective method. The eye movements of both eyes are conjugated in each subject, having saccades of the same length and speed.
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  • 文章类型: Journal Article
    在困境中寻求接近是依恋理论的主要策略之一;不安全的人通常也会制定次要策略。依恋解除中隐含的机制是当前辩论中的一个关键问题,与它们在寻求支持中的作用有关。本研究的主要目的是通过分析注意过程来研究在困境条件下的依恋停用策略和接近/寻求支持的过程(即,一种基本的情绪调节策略),使用眼动追踪技术。72名参与者(45名女性;Mage23.9±3.97)回答了ECR-R问卷,以确定他们的依恋方式。他们参加了一个实验,他们必须在护理图片或食物图片之间进行选择,在呈现威胁性或中性的主要条件(通过图片“刺激”)之后。结果表明,护理一致性反应模式是最常见的反应模式,特别是在威胁的情况下;相反,只有回避型个体通过选择食物图片表现出较低的护理一致性反应模式.总体研究结果表明,回避个体使用停用策略来处理与舒适相关的依恋图片,表明他们认为这些刺激具有威胁性.讨论了依恋理论,特别是回避策略的含义。
    Proximity-seeking in distress situations is one of attachment theory\'s primary strategies; insecure individuals often also develop secondary strategies. The mechanisms implied in attachment deactivation constitute a key issue in the current debate related to their role in support-seeking. The main aim of this study is to investigate the attachment deactivation strategy and the processes of proximity/support-seeking under distress conditions by analyzing the attentional processes (i.e., an essential emotion-regulation strategy), using eye-tracking techniques. Seventy-two participants (45 female; Mage 23.9 ± 3.97) responded to the ECR-R questionnaire in order to identify their attachment style. They participated in an experimental situation in which they had to choose between pictures of care or pictures of food, following the presentation of threatening or neutral prime conditions (via the pictures\' stimuli). Results showed that a care-consistency response pattern was the most frequent pattern of response, particularly under a threatening condition; on the contrary, only avoidant individuals showed a lower care-consistency response pattern by choosing food pictures. The overall findings demonstrate that avoidant individuals used the deactivation strategy to process comfort-related attachment pictures, suggesting that they considered these stimuli to be threatening. The implications for attachment theory and particularly for avoidant strategies are discussed.
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  • 文章类型: Journal Article
    Price is considered one of the most important attributes in consumer\'s choice. On the other hand, consumer\'s knowledge about price tends to be imprecise. This study aims at providing new insights analyzing consumers\' perception of retail store brand (focused on Skin Care Products) comparing with two other skin care products, a premium, and a popular national brand. Second, to analyze the association price versus quality variables in the purchasing decision process. Third, to demonstrate the influence of both, unconscious and cognitive process during the purchase choice intention. Through Neuromarketing tools and protocols (quantitative and qualitative), the study exposes participants to a blind test of the three products and asks participants to talk about their sensory impressions like scent, feelings, and products texture. Using facial electromyography (EMG) and eye-tracker devices we measured consumers\' responses when we introduced price and brand name variables, by this way comparing unconscious and cognitive responses. The findings showed that an unconscious decision could be change when new variables were revealed. The study showed how conscious price variable was the major influence in their purchase intention.
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  • 文章类型: Journal Article
    We describe the pattern of fixations of subjects looking at figurative and abstract paintings from different artists (Molina, Mondrian, Rembrandt, della Francesca) and at modified versions in which different aspects of these art pieces were altered with simple digital manipulations. We show that the fixations of the subjects followed some general common principles (e.g., being attracted to saliency regions) but with a large variability for the figurative paintings, according to the subject\'s personal appreciation and knowledge. In particular, we found different gazing patterns depending on whether the subject saw the original or the modified version of the painting first. We conclude that the study of gazing patterns obtained by using the eye-tracker technology gives a useful approach to quantify how subjects observe art.
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