• 한국IT서비스학회지
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• 제16권1호
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• pp.55-72
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• 2017

Many of the studies of visual attention that are currently underway are seeking ways to make application systems that can be used in practice, and obtained good results using not only simulated images but also real-world images. However, despite that previous studies of selective visual attention are models intended to implement the human vision, few experiments verified the models with actual humans and there is no standardized data nor standardized experimental method for actual images. Therefore, in this paper, we propose a new performance evaluation techniques necessary for evaluation of visual attention systems. We developed an evaluation method for evaluating the performance of the visual attention system through comparison with the results of the human experiments on visual attention. Human experiments on visual attention is an experiments where human beings are instinctively aware of the unconscious when images are given to humans. So it can be useful for evaluating performance of the bottom-up attention system. Also we propose a new selective attention system that guides the user to effectively detect ROI regions by using spatial and temporal features adaptively selected according to the input image. We evaluated the performance of proposed visual attention system through the developed performance evaluation method, and we could confirm that the results of the visual attention system are similar to those of the human visual attention.

• 대한청각학회지
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• 제25권4호
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• pp.178-188
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• 2021

Background and Objectives: The influence of musical aptitude on cognitive test performance in musicians is a long-debated research question. Evidence points to the low performance of nonmusicians in visual and auditory cognitive tasks (working memory and attention) compared with musicians. This cannot be generalized to all nonmusicians, as a sub-group in this population can have innate musical abilities even without any formal musical training. The present study aimed to study the effect of musical aptitude on the working memory and selective attention. Subjects and Methods: Three groups of 20 individuals each (a total of 60 participants), including trained-musicians, nonmusicians with good musical aptitude, and nonmusicians with low musical aptitude, participated in the present study. Cognitive-based visual (Flanker's selective attention test) and auditory (working memory tests: backward digit span and operation span) tests were administered. Results: MANOVA (followed by ANOVA) revealed a benefit of musicianship and musical aptitude on backward digit span and Flanker's reaction time (p<0.05). Discriminant function analyses showed that the groups could be effectively (accuracy, 80%) segregated based on the backward digit span and Flanker's selective attention test. Trained musicians and nonmusicians with good musical aptitude were distinguished as one cluster and nonmusicians with low musical aptitude formed another cluster, hinting the role of musical aptitude in working memory and selective attention. Conclusions: Nonmusicians with good musical aptitude can have enhanced working memory and selective attention skills like musicians. Hence, caution is required when these individuals are included as controls in cognitive-based visual and auditory experiments.

• Journal of Audiology & Otology
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• 제25권4호
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• pp.178-188
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• 2021

Background and Objectives: The influence of musical aptitude on cognitive test performance in musicians is a long-debated research question. Evidence points to the low performance of nonmusicians in visual and auditory cognitive tasks (working memory and attention) compared with musicians. This cannot be generalized to all nonmusicians, as a sub-group in this population can have innate musical abilities even without any formal musical training. The present study aimed to study the effect of musical aptitude on the working memory and selective attention. Subjects and Methods: Three groups of 20 individuals each (a total of 60 participants), including trained-musicians, nonmusicians with good musical aptitude, and nonmusicians with low musical aptitude, participated in the present study. Cognitive-based visual (Flanker's selective attention test) and auditory (working memory tests: backward digit span and operation span) tests were administered. Results: MANOVA (followed by ANOVA) revealed a benefit of musicianship and musical aptitude on backward digit span and Flanker's reaction time (p<0.05). Discriminant function analyses showed that the groups could be effectively (accuracy, 80%) segregated based on the backward digit span and Flanker's selective attention test. Trained musicians and nonmusicians with good musical aptitude were distinguished as one cluster and nonmusicians with low musical aptitude formed another cluster, hinting the role of musical aptitude in working memory and selective attention. Conclusions: Nonmusicians with good musical aptitude can have enhanced working memory and selective attention skills like musicians. Hence, caution is required when these individuals are included as controls in cognitive-based visual and auditory experiments.

• 한국초등과학교육학회지:초등과학교육
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• 제36권4호
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• pp.428-438
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• 2017

The purpose of this study is to analyze the visual attention of elementary school students according to the editorial design of the 2007 2009 revised elementary science textbook 'Structure and function of our body'. For this purpose, eye movements were collected while elementary school students were watching real textbooks wearing mobile eye tracker. The BeGaze 3.7 program of SMI company was used analyzing eye movements. Twenty-six elementary school students participated voluntarily in mobile tracking research. Elementary students learned the contents of textbook related to 'digestive organ' and 'respiratory organ' by using double reading learning strategy. The results of this study are as follows. First, as a result of pre- and post-knowledge tests, there was no statistically significant difference in learning effect between 2007 revised and 2009 revised textbook editing design. Second, elementary school students tended to give more visual attention to text than textbook illustrations. Third, the selective attention and persistent attention of elementary students showed a very strong positive correlation (.940), but the selective attention and self-control showed a strong positive correlation (.499). Fourth, students with high level of attention and low level showed high visual occupancy in text than in illustrations. Fifth, elementary school students preferred the 2009 revised science textbook to the 2007 revised.

• 한국콘텐츠학회논문지
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• 제5권6호
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• pp.87-96
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• 2005

본 논문은 동영상에서 ROI(region of interest)나 FOA(focus of attention)를 탐지하기 위한 방법으로써 여러 시각자극(stimuli)중 모션(motion) 정보를 사용한 선택적 주의 시스템을 소개한다. 2개 이상의 연속적인 프레임으로 구성되는 모션은 시간정보가 포함된 현실세계의 시각장면에서 시간적으로 현저함(temporal saliency) 정도를 나타내는 특징이라 할 수 있으며, 본 연구에서는 이러한 모션을 인간 뇌의 대뇌 시각피질에 존재하는 MT(middle temporal cortex) 영역에 존재하는 "이중 대립 수용야(double opponent receptive fields)"의 특성과 "노이즈 여과(noise filtration)" 기능에 대한 기존의 심리학적 연구 결과를 바탕으로 분석하고, 이렇게 분석된 결과를 MT에서의 "모션통합" 이론을 기반하여 통합한다. 이러한 과정을 통해 동영상에서 다른 주변의 영역과 현저히 다른 돌출 영역으로 정의되는 ROI또는FOA를 탐지할 수 있다. 제안하는 시스템의 성능분석을 위해 인간을 대상으로 한 심리학적인 실험을 추가적으로 수행하여 제안된 시스템을 통해 얻어진 결과와 비교함으로써, 본 시스템이 얼마나 타당성이 있는지 검증하였다.

• 한국정보전자통신기술학회논문지
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• 제16권5호
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• pp.301-306
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• 2023

Attention is a fundamental aspect in the cognitive process of human. Cognitive system of human body requires to focus on selected information among a vast amount of information from sensory organs. It has widely studied that various environmental factors affected the level of attention; however, few researches have aimed to the effect of direct cryotherapy. In this research, level of attention was studied comparing sub-indexes of FAIR test between groups with different duration of direct cryotheapy to the back of neck. FAIR test is a evaluation tool for visual attention consisting of three sub-indexes. Selective attention, accuracy of attention, and persistence of attention can be independently analyzed by FAIR test. In the analysis of selective attention, cryotherapy for 5 to 20 minutes showed higher result than cryotherapy for 40 minutes. In the analysis of persistence of attention, cryotherapy for 5 to 15 minutes showed higher result than cryotherapy for 40 minutes. Overall, selective attention and persistence of attention turns out to be maximized between 5 to 20 minutes of cryotherapy and tends to decrease afterwards. However, accuracy of attention does not seem to be affected by the duration of cryotherapy. Correlation between selective attention and the skin temperature by cryotherapy tends to be negative supporting the findings by ANOVA and post-hoc test. Correlation between persistence of attention and the skin temperature showed similar results.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제34권3호
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• pp.181-187
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• 2023

Objectives: This study aimed to investigate the correlation between the Comprehensive Attention Test, Korean-Wechsler Intelligence Scale for Children-Fourth Edition, and Attention-Deficit/Hyperactivity Disorder (ADHD) Rating Scale-IV scores in children and adolescents with ADHD. Methods: Fifty-five children and adolescents diagnosed with ADHD and not taking psychiatric medications were included in this retrospective study. A correlation analysis was performed. Results: Although simple visual and auditory selective attention have diagnostic value in traditional continuous performance tests, this study revealed that inhibition-sustained attention and interference-selective attention are also effective in evaluating ADHD. Furthermore, the correlation between the attention and intelligence test scores varied depending on the use of visual or auditory stimuli. Conclusion: The findings of this study contribute to clarifying our understanding of the cognitive characteristics of children and adolescents with ADHD and can be used in future research.

• 센서학회지
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• 제13권2호
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• pp.144-151
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• 2004

In this paper, we propose an active stereo surveillance system with human-like convergence function. The proposed system uses a bottom-up saliency map model with the human-like selective attention visual function to select an interesting region in each camera. and this system compares the landmarks whether the selective region in each camera finds a same region. If the left and right cameras successfully find a same landmarks, the implemented vision system focuses on the landmark. Using the motor encoder information, we can automatically obtain the depth information and resultantly construct a depth map using the depth information. Computer simulation and experimental results show that the proposed convergence method is very effective to implement the active stereo surveillance system.

• 한국통신학회논문지
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• 제38C권11호
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• pp.1000-1009
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• 2013

본 연구는 다차원 영상 시각피로를 정량적으로 평가하기 위해 선택적 주의이론에 근거한 청각자극 실험패러다임을 이용하여 시청 전후의 태스크 퍼포먼스 변화를 비교 평가하고자 하였다. 21명의 대학생들이 약 80분의 모바일 3D 콘텐츠 시청 전후에 청각자극을 이용한 선택적 주의 태스크를 각각 수행하였다. 실험참가자들의 주관피로평가 결과를 본페로니의 알파 수정을 적용한 윌콕슨 부호 순위 검정으로 분석하고 피로군과 비피로군으로 분류하여 태스크 퍼포먼스를 비교 평가하였다. 비피로군의 경우 시청 전후 태스크 퍼포먼스 인덱스에서 유의미한 차이가 나타나지 않았으나, 피로군의 경우 모바일 3D 콘텐츠 시청 후에 타겟에 대한 반응 시간이 유의하게 증가하고 반응 정확도가 유의하게 감소하였다. 작업기억 태스크 정확도의 경우는 두 그룹 다 유의미한 차이를 보이지 않았다.

• 인지과학
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• 제19권2호
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• pp.125-142
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• 2008

본 연구는 공간-기반 주의(space-based attention)와 대상-기반 주의(object-based attention)가 공간 및 시각 작업기억에 미치는 영향을 살펴보고자 두 가지 주의 자원 양상이 모두 관여하는 공간 스트룹 과제를 이용하여 작업기억의 재인율을 측정하였다. 작업기억과 공간 스트룹 과제의 자극 배열의 유사성 조건은 작업기억 과제 수행 시 공간 시연에 미치는 공간-기반 주의의 영향을 살펴보고자 구성되었으며, 스트룹 조건은 작업기억 과제 수행시 대상에 대한 시연에 미치는 대상-기반 주의의 영향을 살펴보고자 하였다. 그 결과, 공간 작업기억과 공간 스트룹 과제의 자극 배열의 유사성이 높은 조건에서 공간 작업기억의 재인율이 높은 것으로 나타났으며, 스트룹 조건에 따라서는 차이가 없는 것으로 나타났다. 반면, 시각 작업기억의 재인율은 스트룹 일치조건보다 불일치조건에서 더 저조한 것으로 나타났으며, 유사성 조건에 따라서는 차이가 없는 것으로 나타났다. 이러한 결과는 작업기억에서 요구되는 자원의 양상과 선택적 주의 자원의 양상이 동일한 경우에만 선택적 주의가 작업기억에 영향을 준다는 것을 시사하는 것이다.