• Title/Summary/Keyword: visual-stimuli

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An EEG Study of Emotion Using the International Affective Picture System (국제정서사진체계 ( IAPS ) 를 사용하여 유발된 정서의 뇌파 연구)

  • 이임갑;김지은;이경화;손진훈
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 1997.11a
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    • pp.224-227
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    • 1997
  • The International Affective Picture System (IAPS) developed by Lang and colleagues[1] is a world-widely adopted tool in studices relating a variety of physiological indices to subjective emotions induced by the presentation of standardized pictures of which subjective ratings are well established in the three dimensions of pleasure, arousal and dominance. In the present stuey we investigated whether distinctive EEG characteristics for six discrete emotions can be discernible using 12 IAPS pictures that scored highest subjective ratings for one of the 6 categorical emotions, i. e., happiness, sadness, fear, anger, disgust, and surprise (Two slides for each emotion). These pictures as visual stimuli were randomly given to 38 right-handed college students (20-26 years old) with 30 sec of exposure time and 30sec of inter-stimulus interval for each picture while EEG signals were recorded from F3, F4, O1, and O2 referenced to linked ears. The FFT technoque were used to analyze the acquired EEG data. There were significant differences in RP value changes of EEG bands, most prominent in theta, between positive positive and negative emotions, and partial also among negative emotions. This result is in agreement with previous studies[2, 3]. However, it requires further studied to decided whether IAPS could be a useful tool for catigorical approaches to emotion in addition to its traditional uwe, namely dimensional to emotion.

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Hangul Word-Frequency in Semantic Categorization Task (범주화 과제에서의 한글단어 빈도효과)

  • Cho, Jeung-Ryeul
    • Annual Conference on Human and Language Technology
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    • 1999.10e
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    • pp.351-358
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    • 1999
  • Two experiments were conducted to investigate effects of word-frequency on semantic processing of Hangul. Stimuli were two syllable words, and exemplars and target words were different in the final consonant of the second syllable in the Exp 1 and in the final consonant of the first syllable in the Exp2. Exp 1 shows the results that subjects made more errors on low frequency target words and took longer times on high frequency exemplars than on controls. In Exp 2 subjects took longer times on high frequency examplar-low frequency target word conditions than on controls. These results support the predictions of dual process models and suggest that the use of phonological and visual information depends on word frequency. Phonological activation appears to be an optional rather than obligatory process.

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A Case Report of Congenital Hyperekplexia in Twin (쌍생아에서 발생한 선천성 Hyperekplexia 1례)

  • Choi, Bong Seok;Kim, Young Mi;Lee, Yun Jin;Park, Su Eun;Nam, Sang Ook
    • Clinical and Experimental Pediatrics
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    • v.45 no.10
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    • pp.1284-1288
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    • 2002
  • Hyperekplexia or startle disease is a hereditary neurological disorder characterized by an abnormally exaggerated startle response to tactile, auditory and visual stimuli, together with a global muscular hypertonia and hyperactive tendon reflexes. This disease is a rare, genetically determined disorder, with an autosomal dominant inheritance with variable expression, first described by Suhren, et al. We report two cases of familial hyperekplexia, who developed hypertonia and pathologic startle response to tactile stimulation in the immediate neonatal period. The infant showed a marked improvement of the startle response and muscular hypertonia with low-dose clobazam.

A Study for Field Trips on the Vegetation Types and Plant Growth Habits at the Old Road Naori's Hill Hwasun (야외학습을 위한 화순 너릿재 옛길의 식물상과 생활형에 관한 연구)

  • Lee, Mee Kyoung
    • Journal of Integrative Natural Science
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    • v.1 no.2
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    • pp.160-179
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    • 2008
  • Field classes are necessary to grow the ability of and an attitude toward exploring nature and to shape the basic concept of natural science. I tried to develop a site for field classes and the old road Naori's hill is an ideal place with convenient traffic and established youth camps. As a result the vegetation was divided into five associations and communities. The vegetation units obtained in the present study were as follow: Quercus acutissima community, Pinus densiflora community, Pinus densiflora-Quercus acutissima community, Quercus acutissima-Pinus densiflora community, and Quercus mongolica community. In all survey areas 100 family 336 genus 587 species of palants was found. Furthermore, it provides lots of plants throughout the seasons. Not only the flora but also flowering phenology, variety of floral color and growth habits can be used as teaching items. Incorporation of diverse knowledge of plants at the old road Naori's hill into biology teaching will give students academic stimuli and teachers an opportunity of retraining. With a combination of use of visual instruments, the purpose of conceptual and exploring biology is more easily achieved.

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Children's Awareness of Racial Features, Racial In-Group Classification and Racial Preference According to Visual and Language Features (유아의 인종적 신체 특징 인식, 외모와 언어 단서에 따른 내집단 범주화 및 선호도)

  • Lee, Jungmin;Lee, Kangyi
    • Korean Journal of Child Studies
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    • v.35 no.2
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    • pp.85-102
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    • 2014
  • The purpose of this study was to examine the awareness of racial features, racial in-group classification and preference by Korean children. The study participants comprised 89 children aged 3-5 years. The children performed photograph description and choice tasks. The major findings were as follows: First, older children were significantly more likely than younger children to use racial feature and less likely to use general physical feature to describe the stimuli. Second, children tended to select the South-Asian person speaking in Korean language as a Korean, rather than the Korean person speaking in English. Third, children tended to select the person of Korean appearance speaking in English as a playmate. The result revealed the developmental features of racial awareness. Furthermore the correspondence of language plays an important role on the children's in-group classification whereas the correspondence of appearance plays an important role on the children's preference.

Character Concept Designs Utilizing Formative Methods in Fashion Design (패션 디자인 조형을 응용한 캐릭터 컨셉 디자인)

  • Choi, Rebekah Mijung;Kim, Yejin;Paik, Paul Chul-ho
    • Journal of Korea Game Society
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    • v.18 no.3
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    • pp.103-112
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    • 2018
  • 'Fashion' is one of the most important aspects in game character design. However, despite its influence, analytical approaches in integrating fashion design methods in character designs are rare practices within the industry. The following paper aims point out the practicality of integrating and utilizing theoretical and formative methods in fashion design in creating character concept designs and show how the following application can create visual stimuli for artists in future concepts.

Determination of the Perceived Contrast Compensation Ratio for a Wide Range of Surround Luminance

  • Baek, Ye Seul;Kim, Hong-Suk;Park, Seung-Ok
    • Journal of the Optical Society of Korea
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    • v.18 no.1
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    • pp.89-94
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    • 2014
  • It is established that the perceived image contrast is affected by surround luminance. In order to get the same perceived image contrast, the optimum surround compensation ratios for those surround conditions is needed. Much research has been performed for dark, dim, and average surrounds. In this study, a wide range of surround luminance from dark up to $2087cd/m^2$ was considered. Using magnitude estimation method, the change in perceived brightness of six test stimuli was measured under seven surround conditions; dark, dim, 2 levels of average, bright, and 2 levels of over-bright surrounds. To drive the perceived image contrast from the perceived brightness, two different definitions of contrast were tested. Their calculated results were compared with the visual data of our previous work. And to conclude, the perceived contrast compensation ratios were 1:1.11:1.2 for average, dim and dark surrounds. These were close to CIECAM02 model (1:1.17:1.31). Besides, for average, bright, over-bright1 and over-bright2 surrounds the ratios 1:1.17:1.42:1.69 were determined. For intermediate or more extreme surround conditions, the compensation ratio was obtained from the linear interpolation or extrapolation.

Comparative Study using EEG between Music Major Group and Non-major Group

  • Jeong, Su-Yeon;Lee, Hyeseung;Lee, Naesun;Choi, Doo-Hyun
    • Journal of the Ergonomics Society of Korea
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    • v.32 no.5
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    • pp.421-427
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    • 2013
  • Objective: This paper is to analyze the impact of musical training to the fast ${\alpha}$ wave activation of the EEG. Background: EEG is neurological research method that can observe the brain function in real time. EEG can be used to determine the nervousness and relaxedness of a person who receives stimuli in a structured environment. Therefore, it is possible to interpret the functional state of human brain by the analysis of EEG. Method: The brain activities of two groups of university students in the point of RFA(Relative Fast Alpha) caused by different music are analyzed in this paper. One is the group of music majors and the other is the group of non-majors. Results: Music major and non-major groups show meaningful differences in RFA during exposed to classic and metal music. Conclusion: Learning experience on music affects RFA increment of music majors. Application: The result of this study will be used as basic data to evaluate the learning effects of students who want to study music.

The Effects of Store Environment on Shopping Behavior: The Role of Consumer Idiocentrism and Allocentrism

  • Ryu, Jay-Sang;Bringhurst, Audra
    • Asian Journal of Business Environment
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    • v.5 no.4
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    • pp.5-11
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    • 2015
  • Purpose - The purpose of this research is to identify how idiocentric consumers and allocentric consumers respond to retail store environments and how such responses affect their consumer behaviors in a sustainable consumption setting. Method - Data were collected from 422 U.S. adult consumers via a web-based survey. Two store settings were created, perceptually related (eco-friendly clothing displayed with greenery)or perceptually-unrelated (eco-friendly clothing displayed without greenery), and consumers were asked to take the survey based on the given store setting. Results - Allocentric consumers perceived a product and its display environment were related whereas idiocentric consumers perceived the two were unrelated. Also, the former exhibited higher purchase intentions when the product and store environment were related (eco-friendly clothing displayed with greenery), but the latter did when the two were unrelated (eco-friendly clothing displayed without greenery). Conclusions - This research suggests that retailers should consider consumer self-concept at personal-level when implementing marketing strategies. This research also demonstrates that consumers are influenced by store environment in relation to their self-concept and that self-concept can be temporarily modified by various stimuli such as visual displays.

Interdependence of Images and Music Combined by Sharing the Identical Properties - Based on the Movie - (동일 속성 결합에 의한 영상과 음악의 상호의존성 -영화 <인터스텔라(Interstellar, 2014)>를 중심으로-)

  • Lee, Do-Kyoung;Kim, Jun
    • The Journal of the Korea Contents Association
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    • v.19 no.10
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    • pp.237-247
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    • 2019
  • This study looks at common features between the two media to explore the deepening relationship within music and images in movies and finds at how they are combined each other and the resulting effects. Beyond the limitations of conventional viewpoints of music as video-dependent media, The is analyzed to focus on the deepening relationship between the two media. In the movie, music and video were combined by sharing the same attributes of 'repeating structure', which increases the transmission power to the film's subject and story, maximizes visual and auditory stimuli, and forms a sense of immersion. That is, video and music combined in equal positions have great influence to each other, thus representing for a positive consideration of the potential for establishing interdependent relationships.