• Title/Summary/Keyword: Combined Stimuli

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The Tactile Illusion evoked by a synchronous Visual Stimulus on Virtual and Real Hand (가상과 실제 손의 동기화를 통한 촉각환상 유발연구)

  • Jeonghun Ku;Kim, Hosung;Kim, Kwanguk;Wonyoung Hahn;Lee, Jang-Han;Kim, Sun I.
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 2003.05a
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    • pp.84-89
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    • 2003
  • The virtual reality(VR) technology can provide various stimuli, including, visual and auditory stimuli, simultaneously in the virtual environment and encourage the user to interact. Virtual reality is a set of computer technologies, which when combined, provide an interactive interface to a computer generated world. In this world the subject can see, hear and navigate in a dynamically changing environment in which he participates as an active player, by modifying the environment according to his will. Moreover, the subject can get a feeling for the virtual environment in much the same way as one feels real life situations. In the real world, a plethora of information from various modalities may be in conflict, and modulate each other to form an illusion. In this study we investigated whether a tactile illusion on a real hand could be evoked by a virtual stimulus, the time required to generate this illusion and its duration. This study shows that the illusion occurred, and that was correlated with presence score in the virtual environment.

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A Visual Image Perception of Clothing Colors, Color combinations of Korean Traditional Dress for Woman(Part 2) (복식색과 색조합의 이미지 지각(제2 보)-여자 한복의 상.하 색조합 효과를 중심으로-)

  • 이혜숙;김재숙
    • Journal of the Korean Society of Clothing and Textiles
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    • v.22 no.8
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    • pp.1052-1059
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    • 1998
  • The purposes of the study were to analyse the colors and, color combinations effect on the image perception using gestalt theory. The research method was a quasi-experimental with a between subjects design. The experimental materials developed for the study were a set of stimuli and a response scale. The stimuli was consisted of 17 drawings of females wearing Korean traditional dress, by using CAD simulation. A response scale consisted of semantic differential scales. The subjects were 1138 undergraduate students of Taejon city, Chungnam province and Chungbuk province. Their responses to the semantic differential scales were analyzed using factor analysis, ANOVA, Duncans multiple range test. Results were as follows; 1) The colors effect of blouse was significantly greater than the effect of skirt, and no interaction effect was found between blouse colors and skirt colors. 2) In bi-color combination dress set, the combined image of the two colors were compared to the image of the two mono color sets: No single principle was found, however, salient color (such as yellow) and unattractive color (such as green) seemed to act as central trait colors on the image perception. On conclusion the visual image of Korean traditional dress wearer was affected by central trait colors in bi-color combination, and this results support the gestalt theory with central traits.

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A Gap Prepulse with a Principal Stimulus Yields a Combined Auditory Late Response

  • Lee, Jae-Hun;Jung, Jae Yun;Park, Ilyong
    • Journal of Audiology & Otology
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    • v.24 no.3
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    • pp.149-156
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    • 2020
  • Background and Objectives: The gap prepulse inhibition of the acoustic startle response has been used to screen tinnitus in an animal model. Here, we examined changes in the auditory late response under various conditions of gap prepulse inhibition. Subjects and Methods: We recruited 19 healthy adults (5 males, 14 females) and their auditory late responses were recorded after various stimuli with or without gap prepulsing. The N1 and P2 responses were selected for analysis. The gap prepulse inhibition was estimated to determine the optimal auditory late response in the gap prepulse paradigm. Results: We found that the gap per se generated a response that was very similar to the response elicited by sound stimuli. This critically affected the gap associated with the maximal inhibition of the stimulus response. Among the various gap-stimulus intervals (GSIs) between the gap and principal stimulus, the GSI of 150 ms maximally inhibited the response. However, after zero padding was used to minimize artifacts after a P2 response to a gap stimulus, the differences among the GSIs disappeared. Conclusions: Overall, the data suggest that both the prepulse inhibition and the gap per se should be considered when using the gap prepulse paradigm to assess tinnitus in humans.

A Gap Prepulse with a Principal Stimulus Yields a Combined Auditory Late Response

  • Lee, Jae-Hun;Jung, Jae Yun;Park, Ilyong
    • Korean Journal of Audiology
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    • v.24 no.3
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    • pp.149-156
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    • 2020
  • Background and Objectives: The gap prepulse inhibition of the acoustic startle response has been used to screen tinnitus in an animal model. Here, we examined changes in the auditory late response under various conditions of gap prepulse inhibition. Subjects and Methods: We recruited 19 healthy adults (5 males, 14 females) and their auditory late responses were recorded after various stimuli with or without gap prepulsing. The N1 and P2 responses were selected for analysis. The gap prepulse inhibition was estimated to determine the optimal auditory late response in the gap prepulse paradigm. Results: We found that the gap per se generated a response that was very similar to the response elicited by sound stimuli. This critically affected the gap associated with the maximal inhibition of the stimulus response. Among the various gap-stimulus intervals (GSIs) between the gap and principal stimulus, the GSI of 150 ms maximally inhibited the response. However, after zero padding was used to minimize artifacts after a P2 response to a gap stimulus, the differences among the GSIs disappeared. Conclusions: Overall, the data suggest that both the prepulse inhibition and the gap per se should be considered when using the gap prepulse paradigm to assess tinnitus in humans.

The Color Effect on Expressive Perception (색채가 표현 지각에 미치는 영향)

  • Jue, Juliet
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.11
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    • pp.8030-8036
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    • 2015
  • This study is to explore the effect of figure and color informations on assessing expressed emotions in drawings. A pilot study was conducted to explore emotional responses to achromatic drawing stimuli. The main experiment explored emotional responses to chromatic drawing stimuli. Each experiment has a number of 50, 56 participants separately, and responses included joy, depression, and anger according to appraisal-potency-activity dimensions. As results, achromatic drawing stimuli with their texture and rhythm produced specific emotions in high rates. Moreover, response rates of specific emotions were lower when colors added, or emotional responses were changed with colors. The significance of this study can be found in the fact that it dealt with colors combined with shape, unlike the previous studies, and that the experiments were conducted under more controlled conditions in terms of stimulus presentation and response management.

A Study in the Perception of the Harmony of Coloration in Traditional Korean Dress of Korean and American Students (Part III) - On the Chromatic and Achromatic colors - (한복배색의 조화감에 대한 한.미 여대생의 지각 반응 연구(제3보) -유채색과 무채색을 중심으로-)

  • 강경자;문주영
    • Journal of the Korean Society of Clothing and Textiles
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    • v.28 no.7
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    • pp.962-973
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    • 2004
  • The purpose of this research is to understand the harmony of chromatic and achromatic colors of the traditional Korean dress. The subjects were women's college students in Korea and America. Chromatic colon, red, yellow, and green color, were chosen for the color of the Korean jacket, and achromatic colors were chosen for the color of the skirt, and then the colors' chroma were controlled and value of color was changed. In addition, the three colors of the jacket were combined with four kinds of the colors' tone. Then, the students of both countries assessed about the harmony for 48 colorations which were variously incorporated with the tones of skirt and jacket. The results of research can be summarized as follows. When red jackets were combined with skirts of achromatic colors, students of both counties showed the different views in the range of harmony and disharmony for colorations of white(N9) skin and vivid jacket, and white(N9) skirt and dark jacket, and black(N2) skirt and light jacket, and black(N2) skirt and dull jacket. In the tone of yellow jackets and achromatic skirts, students of both counties showed similar responses in that a light yellow jacket was well matched with dark grey(N4) and black(N2) skirt. While Korean students generally evaluated that coloration was well harmonized when low value color was arranged below, American students thought, that the tones of a harmonized skirt were different, according to the jacket's tones. When green jackets were combined with stills of achromatic colors, colorations that showed their different views of both countries were a white(N9) skirt combined with vivid, light, dull jackets, and a light grey(N7) skirt and dull jacket, and a dark grey(N4) skirt and dark jacket. Among 48 stimuli of coloration on the chromatic and achromatic colors, Korean students evaluated 16sets and American students judged 28 sets as harmonized colors. Therefore, it came to the conclusion that Korean students had the sense of harmonious coloration of more narrow range than American students.

Functional Magnetic Resonance Imaging of Brain Reactivity to Insomnia-Related vs. General Anxiety-Inducing Stimuli in Insomnia Patients with Subjective-Objective Discrepancy of Sleep (주관적-객관적 수면시간 차이를 보이는 불면증 환자에서 일반적 불안에 비해 불면증 관련 자극으로 인한 뇌활성에 관한 기능적 자기공명영상 연구)

  • Kim, Nambeom;Lee, Jae Jun;Cho, Seo-Eun;Kang, Seung-Gul
    • Sleep Medicine and Psychophysiology
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    • v.27 no.1
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    • pp.24-31
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    • 2020
  • Objectives: Subjective-objective discrepancy of sleep (SODS) is a common symptom and one of the major phenotypes of insomnia. A distorted perception of sleep deficit might be related to abnormal brain reactivity to insomnia-related stimuli. We aimed to investigate differences in brain activation to insomnia-related stimuli vs. general anxiety-inducing stimuli among insomnia patients with SODS, insomnia patients without SODS, and healthy controls (HCs). Methods: All participants were evaluated for subjective sleep status using a sleep diary and questionnaires; occult sleep disorders and objective sleep status were assessed using polysomnography and actigraphy. Task functional magnetic resonance imaging was performed during insomnia-related stimuli (Ins) and general anxiety-inducing stimuli (Gen). Brain reactivity to Ins versus Gen was compared among insomnia with SODS, insomnia without SODS, and HC groups, and a combined insomnia disorder group (ID, insomnia with and without SODS) was also compared with HCs. Results: In the insomnia with SODS group compared to the insomnia without SODS group, the right precuneus and right supplementary motor areas showed significantly increased BOLD signals in response to Ins versus Gen. In the ID group compared to the HC group, the left anterior cingulate cortex showed significantly increased BOLD signals in response to Ins versus Gen. Conclusion: The insomnia with SODS and ID groups showed higher brain activity in response to Ins versus Gen, while this was not observed in the insomnia without SODS and HC groups, respectively. These results suggest that insomnia patients with sleep misperception are more sensitive to sleep-related threats than general anxiety-inducing threats.

Effects of Combined Stimuli of Color and Sounds on Human Sensibility (색상과 음향의 복합자극에 대한 인간감성의 변화)

  • 정일석;이구형;김병주
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 2001.05a
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    • pp.97-103
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    • 2001
  • 인간은 외부 자극 중 시각 및 청각 자극으로부터 가장 많은 정보를 받아들이며 감성이 유발된다. 지금까지의 제품 개발 과정에서 디자인은 시각적 이미지에 중점을 두고 제품에 대한 사람의 느낌을 긍정적으로 만들어주는 외형적 심미성을 추구하여 왔다. 그러나 증대하는 고객의 감성욕구를 충족시키기 위해 기존의 시각 단독 자극에 의한 방법은 한계가 있으며, 따라서 두 가지 이상의 자극을 동시에 제공하는 복합자극을 활용함으로써 고객의 감성만족을 극대화하는 제품 디자인이 필요하다. 본 연구는 이미지 스케일에 나타난 대표적은 8가지 색상과 음향을 함께 제시할 때 인간 감성의 변화를 파악하고 두 자극간 상호 관련성을 조사하였다. 실험결과 동일속성의 색상, 음향이 제시될 때 유발되는 감성은 요소자극과 동일한 속성을 따르며 감성크기가 감소하였고, 반대 속성의 자극이 제시될 때 가성 변화 방향은 청각(음향) 방향과 동일하고, 자극의 크기는 상반된 속성에 의해 가성의 상쇄현상을 보여주었다. 또한 피실험자를 정적, 동적인 성격으로 구분하여 분석한 결과 감성 변화에 차이를 보였으며 이 결과를 토대로 다감각 디자인을 위해 감성의 개인성도 고려해야 함을 알 수 있었다.

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Properties of Cylindrical Brush Polymers

  • Zhang Bin;Fischerl Karl;Grohn Franziska;Pedersen J S.;Schmidt Manfred
    • Proceedings of the Polymer Society of Korea Conference
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    • 2006.10a
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    • pp.109-109
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    • 2006
  • Flexible polymers with densely grafted side chains adopt the shape of cylindrical brushes, because the steric repulsion of the side chains overcomes the entropic restoring force of the main chain. Combined light-and neutron scattering measurements elucidate the extend of main chain and side chain stretching as function of side chain length. The application of cylindrical brushes as molecular actuators in response to external stimuli which is discussed.

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A Study on the Effects of Excessive Price Discounts etc. on Consumer Purchase Intention in Internet Shopping Mall (인터넷쇼핑몰의 과다한 가격할인 및 선착순경매가 소비자의 구매의도에 미치는 영향에 관한 연구)

  • Moon, Tae-Hyun;Park, Ju-Young
    • The KIPS Transactions:PartD
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    • v.14D no.4 s.114
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    • pp.395-406
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    • 2007
  • The development of e-commerce made a great effect on all the aspect of marketing mix. Especially, marketing stimuli of Halfplaza.com, excessive price discounts and auction by order of arrival, spread out gradually in internet shopping mall industry. The study showed that excessive price discounts combined with auction by order of arrival increased consumer's perceived value, but decreased perceived risk. In conclusion, legal protections must be established since consumers tend to be vulnerable to various marketing mix of deceptive e-commerce players.