• Science of Emotion and Sensibility
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• v.14 no.2
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• pp.311-320
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• 2011

To quantitatively analyze the effects of color stimulation which is one of the major affecting factors on human emotion, we studied the relationship between color preference and the Electroencephalography (EEG) to 3 color stimuli; bright yellow red (BYR), deep green yellow (DGY), and vivid blue (VB). Physiological signal measured by EEG on the color stimulation was closely related with their well-known colorful images. The brain become more activated with decreasing the color temperature (BYR${\geq}$DGY>VB), and the right brain is more sensitive than the left. On the whole, the EEG values of the frequency bands are in order to beta ${\geq}$ theta and alpha > gamma. As decreasing the color temperature, beta wave increased (BYR${\geq}$DGY>VB), and alpha, beta and gamma waves increased with increasing the color temperature (BYR${\geq}$DGY>VB). The relationship between the color preference and EEG values showed EEG gets more activated at some frequency bands when the color preference becomes higher. In conclusion, the specific frequency band could be activating by a color stimuli which had showed higher the preference. It means that these color stimuli can apply for various industries such as beauty industry, interior design, fashion design, color therapy, and etc.

• Science of Emotion and Sensibility
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• v.18 no.4
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• pp.99-108
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• 2015

A majority of past studies have tried to investigate cigarette consumption in terms of smoker's cognitive aspects. However, smokers may experience feelings of guilt as a negative emotion while satisfying hedonic and social motive via cigarette consumption. Particularly, feelings of guilt associated with smoking may be induced when smokers' cigarette consumption contradicts their ideal self-concept or social self-concept. The research thus studied smoker's psychological mechanism, focusing on feelings of guilt associated with cigarette consumption. The results indicated that as smokers perceived physical harm associated with their cigarette consumption more than hedonic benefits from the cigarette consumption, they were more likely to experience feelings of guilt related to themselves and others. As smokers perceived social images of smoker as more negative, they were more likely to experience feelings of guilt related to others. Lastly, smokers' experiencing feelings of guilt related to themselves and others had a positive effect on smoking cessation intent. The research findings suggest that the anti-smoking campaign inducing guilt related to smokers' themselves (e.g., raising the price of cigarettes) and others (e.g., anti-smoking ads displaying physical damage of secondhand smoke on family members) can increase smokers' cessation intent.

• Science of Emotion and Sensibility
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• v.12 no.4
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• pp.443-450
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• 2009

The purpose of this study is to observe activation of limbic system during performing visuospatial tasks by 21% and 30% oxygen administration. Eight right handed male college students were selected as the subjects for this study. A visuospatial task was presented while brain images were scanned by a 3T fMRI system. The experiment consisted of two runs: one was a visuospatial task under normal air(21% oxygen) condition and the other under hyperoxic air(30% oxygen) condition. The neural activations were observed at the limbic system which is seperated 8 regions such as cingulate gyrus, thalamus, limbic lobe, hypothalamus, hippocampus, parahippocampa gyrus, amygdala, and mammiilary body. By two oxygen levels, activation areas of limbic system are almost identical. Increased neural activations were observed in the cingulate gyrus and thalamus with 30% oxygen administration compared to 21% oxygen. During 30% oxygen administration, improvement of visuospatial task performance has a relation to increase of neural activation of subcortical structures such as thalamus and cingulate gyrus as well as cerebral cortex.

• Science of Emotion and Sensibility
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• v.19 no.1
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• pp.71-82
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• 2016

Consumers tend to perceive the shoes as just their footwear to protect and comfort foot and fashion products to decorate and express their self-images. Even though online market research analysis indicated shoes consumption is important in daily life of consumers, there is limited research that was conducted specifically on shoes e-market. The research investigates the process of shoes' e-impulse buying focusing on the effects of shopping orientation, marketing stimulus and consumers' perceived risk in shoes market at Internet. A total of 408 self-administered questionnaires were obtained from universities students, who had experienced the e-impulse buying of shoes at least once for the last six months. Results confirmed that consumers who had higher hedonic shopping orientation or brand shopping orientation were more likely to consider the marketing stimuli (e.g., promotion stimuli and product stimuli), whereas consumers who had higher economic shopping orientation were consider the lower marketing stimuli and the more perceived functional risk in the e-shopping context of shoes. For shoes, marketing stimulus had directly positive effects on e-impulse buying, while consumers' perceived risk had no significant effects on e-impulse buying. The findings suggest that the market stimulus, which is affected by consumers' shopping orientation, is an important factor in triggering e-impulse buying of shoes.

• Science of Emotion and Sensibility
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• v.17 no.1
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• pp.53-62
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• 2014

Despite the huge potential of the practical application of emotion recognition technologies, the enhancement of the technologies still remains a challenge mainly due to the difficulty of recognizing emotion. Although not perfect, human emotions can be recognized through human images and sounds. Emotion recognition technologies have been researched by extensive studies that include image-based recognition studies, sound-based studies, and both image and sound-based studies. Studies on emotion recognition through facial expression detection are especially effective as emotions are primarily expressed in human face. However, differences in user environment and their familiarity with the technologies may cause significant disparities and errors. In order to enhance the accuracy of real-time emotion recognition, it is crucial to note a mechanism of understanding and analyzing users' personality traits that contribute to the improvement of emotion recognition. This study focuses on analyzing users' personality traits and its application in the emotion recognition system to reduce errors in emotion recognition through facial expression detection and improve the accuracy of the results. In particular, the study offers a practical solution to users with subtle facial expressions or low degree of emotion expression by providing an enhanced emotion recognition function.

• Science of Emotion and Sensibility
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• v.16 no.4
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• pp.509-516
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• 2013

As the visual fatigue induced by 3D visual stimulation has raised some safety concerns in the industry, this study aims to quantify the visual fatigue through the means of measuring the facial temperature changes. Facial temperature was measured for one minute before and after watching a visual stimulus. Whether the visual fatigue has occurred was measured through subjective evaluations and high cognitive tasks. The difference in the changes that occurred after watching a 2D stimulus and a 3D stimulus was computed in order to associate the facial temperature changes and the visual fatigue induced by watching 3D contents. The results showed significant differences in the subjective evaluations and in the high cognitive tasks. Also, the ERP latency increased after watching 3D stimuli. There were significant differences in the maximum value of the temperature at the forehead and at the tip of the nose. A previous study showed that 3D visual fatigue activates the sympathetic nervous system. Activation of the sympathetic nervous system is known to increase the heart rate as well as the blood flow into the face through the carotid arteries system. When watching 2D or 3D stimuli, the sympathetic nervous system activation dictates the blood flow, which then influences the facial temperature. This study is meaningful in that it is one of the first investigations that looks into the possibility to measure 3D visual fatigue with thermal images.

• Science of Emotion and Sensibility
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• v.21 no.1
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• pp.115-128
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• 2018

Understanding the process of spatial perception plays a significant role in the design process as well as in the use of actual spaces. The perception of spatial depth can vary according to the space composition and design even there is no change in the actual size of the space. The properties of 3-dimensional space are its width, height, and depth; however, compared to the perception of spatial width and height, little research and theories exist on spatial depth perception. The reasons may be there less interest lies in the effect of spatial depth perception than that of spaciousness or height of space. This study is an investigation of the process of spatial depth perception using an eye-tracking device with stimuli developed through Computer Graphics. A total of 44 interior design major students participated in the eye tracking experiment; and they looked at three images comprised of an identical room with only changes in the rear wall condition. The results show that a significant difference in the fixation duration per stimulus exists. In addition, a significant difference exists on the fixation duration per stimulus according to the participants' answer of the deepest space. The result of this study can help identify factors for spatial depth perception, validate the assumption on it, and provide knowledge on how to acquire desirable spatial depth by utilizing the research result.

• Science of Emotion and Sensibility
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• v.15 no.1
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• pp.17-28
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• 2012

Recent development of 3D technologies made it possible that observers perceive 3D depth from two dimensional images. Despite this kind of technological development, when observers watch 3D display they experience 3D visual fatigue that they do not usually experience in real life. It is critical to measure visual fatigue in order to overcome the problem of 3D visual fatigue. The purpose of the present study was to develop a protocol to measure 3D visual fatigue based on an EEG signal and to examine its validity. The first experiment explored the possible ERP components that reflected visual fatigue in 2D and 3D conditions. The second experiment examined whether the feature of the component found in the first experiment was affected by the amount of binocular disparity. Both in Cz and Pz channels, the peak amplitude of P3 component was much lower in 3D rather than in 2D conditions, and it decreased as the amount of binocular disparity increased. The subjective 3D visual fatigue also increased with the amount of binocular disparity. These results imply that the peak amplitude of P3 component at Cz and Pz channels can be used as an index of 3D visual fatigue.

• Science of Emotion and Sensibility
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• v.15 no.1
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• pp.133-140
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• 2012

We designed a novel individualization process for improving personal emotion recognitions in real time. The designed individualization process was performed by a neutralization algorithm of physiological signals, a subjective emotion reflection of a user updated by personal emotion rules in real time. The physiological signals such as PPG(Photoplethysmography), GSR(Galvanic skin reflex), and SKT(Skin temperature) were measured and analyzed to estimate an emotion states of users. Regulating the emotion status using by emotion rules was performed by reflecting subjective evaluations. The agreement of emotion recognition between of individualization and non-individualization method was estimated by 10 undergraduates (5 females, mean age: $22.1{\pm}2.2$) of Sangmyung University. During the emotion recognition test, 45 images were randomly presented to each participant five times. In results, the proposed individualization process showed the agreement of 71.67 % which was five times higher than when the process was not applied. Therefore, in this study, we demonstrated that the individualization process was significantly useful for customizing emotion recognitions of personal users in real time. The individualization process will be able to improve satisfactions in various emotion related applications and services in the nearer future.

• Science of Emotion and Sensibility
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• v.22 no.2
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• pp.49-58
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• 2019

In the era of the 4th Industrial Revolution, artificial intelligence (AI) has become one of the core technologies in terms of the business strategy among information technology companies. Both international and domestic major portal companies are launching AI search services. These AI search services utilize voice, images, and other unstructured data to provide different experiences from existing text-based search services. An unfamiliar experience is a factor that can hinder the usability of the service. Therefore, the usability testing of the AI search services is necessary. This study examines the usability of the AI search service on the Naver App 8.9.3 beta version by comparing it with the search services of the current Naver App and targets 30 people in their 20s and 30s, who have experience using Naver apps. The usability of Smart Lens, Smart Voice, Smart Around, and AiRS, which are the Naver App beta versions of their artificial intelligence search service, is evaluated and statistically significant usability changes are revealed. Smart Lens, Smart Voice, and Smart Around exhibited positive changes, whereas AiRS exhibited negative changes in terms of usability. This study evaluates the change in usability according to the application of the artificial intelligence search services and investigates the correlation between the evaluation factors. The obtained data are expected to be useful for the usability evaluation of services that use AI.