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- 저자 : 음영지 ( Yeong Ji Eum ) (검색결과 3 건)
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음영지 ( Yeong Ji Eum ),엄진섭 ( Jin Sup Eom ),손진훈 ( Jin Hun Sohn ) 한국감성과학회 2012 감성과학 Vol.15 No.1
There have been many emotion researches to investigate physiological responses on specific emotions with physiological parameters such as heart rate, blood volume flow, and skin conductance. Very few researches, however, exists by detecting them with facial skin temperature. The purpose of present study was to observe the differences of facial skin temperature by using thermal camera, when participants stimulated by monitor scenes which could evoke fear or joy. There were totally 98 of participants; undergraduate students who were in their adult age and middle, high school students who were in their adolescence. We measured their facial temperature, before and after presenting emotional stimulus to see changes between both times. Temperature values were extracted in these regions; forehead, inner corners of the eyes, bridge of the nose, end of the nose, and cheeks. Temperature values in bridge and end of the nose were significantly decreased in fear emotion stimulated. There was also significant temperature increase in the area of forehead and the inner corners of the eyes, while the temperature value in end of the nose decreased. It showed decrease in both stimulated fear and joy. These results might be described as follows: When arousal level going up, sympathetic nervous activity increases, and in turn it makes blood flow in peripheral vessels under the nose decrease. Facial temperature changes by fear or joy in this study were the same as the previous studies which measured temperature of finger tip, when participants experiencing emotions. Our results may help to develop emotion-measuring techniques and establish computer system bases which are to detect human emotions.
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음영지 ( Yeong Ji Eum ),엄진섭 ( Jin Sup Eom ),박광배 ( Kwang Bai Park ),손진훈 ( Jin Hun Sohn ) 한국감성과학회 2011 감성과학 Vol.14 No.2
The purpose of present study was to examine brain functions associated with intention to conceal information. Kubo & Nittono(2009) and Verschuere et al.(2009) studied the intention to conceal information using P300 amplitude. On the basis of these two studies, present study attempted to identify brain area while participants were performing concealed information test. 19 healthy college students participated in fMRI-based concealed information test. Participants` name were used as concealed information. The test was performed in two conditions. In the intention condition, participants were instructed to try leaving their names undetected by suppressing their brain response to it. In the no intention condition, participants performed the test without intention to conceal. The fMRI results showed that the right anterior cingulated cortex (Rt. ACC), and left orbito-frontal cortex (Lt. OFC) activations were greater in the deceptive condition than the truth condition. These finding confirmed that ACC is area a deception-specific process as shown in the previous fMRI study. The OFC activation was also observed in the deceptive condition. The OFC is an area known as associated with emotional response such as anxiety, fear, and guilty. The anxiety induced while participants were intended to conceal information might be related to the OFC activation.
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무료함, 통증, 그리고 놀람 정서 간 자율신경계 반응의 차이
장은혜 ( Eun Hye Jang ),음영지 ( Yeong Ji Eum ),박병준 ( Byoung Jun Park ),김상협 ( Sang Hyeob Kim ),손진훈 ( Jin Hun Sohn ) 한국감성과학회 2011 감성과학 Vol.14 No.4
Recently in HCI research, emotion recognition is one of the core processes to implement emotional intelligence. There are many studies using bio signals in order to recognize human emotions, but it has been done merely for the basic emotions and very few exists for the other emotions. The purpose of present study is to confirm the difference of autonomic nervous system (ANS) response in three emotions (boredom, pain, and surprise). There were totally 217 of participants (male 96, female 121), we presented audio-visual stimulus to induce boredom and surprise, and pressure by using the sphygmomanometer for pain. During presented emotional stimuli, we measured electrodermal activity (EDA), skin temperature (SKT), electrocardiac activity (ECG) and photoplethysmography (PPG), besides; we required them to classify their present emotion and its intensity according to the emotion assessment scale. As the results of emotional stimulus evaluation, emotional stimulus which we used was shown to mean 92.5% of relevance and 5.43 of efficiency; this inferred that each emotional stimulus caused its own emotion quite effectively. When we analyzed the results of the ANS response which had been measured, we ascertained the significant difference between the baseline and emotional state on skin conductance response, SKT, heart rate, low frequency and blood volume pulse amplitude. In addition, the ANS response caused by each emotion had significant differences among the emotions. These results can probably be able to use to extend the emotion theory and develop the algorithm in recognition of three kinds of emotions (boredom, surprise, and pain) by response measurement indicators and be used to make applications for differentiating various human emotions in computer system.
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