• Korean Journal of Food Science and Technology
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• v.52 no.2
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• pp.172-176
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• 2020

Recently, it has been reported that the positive emotional responses from previously consumed food could be transferred to the new food, affecting the acceptance of the food. This study was conducted to develop emotional lexicons for evaluating consumers' emotional responses to the food. Focus group interviews were conducted using 15 Koreans and 23 Chinese consumers to elicit emotional terms for Korean food HMR products. Using 23 Chinese participants who did not participate in the previous interview, emotional terms were screened through discussions in an interview setting. An online survey among 50 Koreans and 50 Chinese was carried out to evaluate and verify the valence and arousal potential of the selected terms. Elicited emotional terms in these two countries had similar valence and arousal potentials. However, cross-cultural differences were also found, mostly in arousal potential. Therefore, interpretation should be done carefully when comparing emotional responses between Korean and Chinese subjects.

• Sleep Medicine and Psychophysiology
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• v.27 no.2
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• pp.51-55
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• 2020

In this paper, we reviewed domestic and foreign cases and evaluation methods for validation of sleep products for development of the domestic sleep industry. Foreign companies and organizations are trying to verify products relatively systematically for demonstration purposes, but they are using different methods depending on the institution, and standardized validation guidelines have not been established. In Korea, there has been little evaluation including objective verification for sleep products. Sleep-wake evaluation for validation of sleep products requires expert evaluation of the product and of the product effectiveness by users, and subjective and objective sleep-wake evaluations and circadian rhythm evaluation methods can be used. For more accurate verification, experimental designs such as randomization method, control product utilization method, and cross-experiment design can be used.

• Journal of Korean Biological Nursing Science
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• v.19 no.3
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• pp.198-205
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• 2017

Purpose: The purpose of this study was to identify sleep patterns, alertness, and fatigue of shift nurses according to circadian types. Methods: The researchers' enrolled 17 nurses doing shift work in a tertiary hospital. To evaluate circadian types, a morningness-eveningness questionnaire (MEQ) was administered. Sleep patterns were examined using an actigraph for 14 days. To assess alertness and fatigue, Visual Analogue Scale (VAS) was used. The data were analyzed using ANOVA and Kruskal-Wallis test with a SPSS 21.0 program. Results: The researchers found that 17.6% of participants reported morning type, 47.1% neither type, and 35.3% evening type. Mean total sleep time (TST) was 6.8 h, mean sleep efficacy was 82%, level of alertness was 6.54, and level of fatigue was 5.49, regardless of the type of shift work. Evening type nurses had higher variation in TST and alertness, according to the shift patterns than other circadian type nurses. Evening type nurses also had higher fatigue levels than other circadian type nurses. Conclusion: Sleep, alertness, and fatigue were related with circadian types. These results suggest that circadian rhythm management in shift work nurses, particularly in evening type nurses is urgently needed to improve sleep patterns, alertness, and to decrease the level of fatigue.

• Journal of Korean Society of Transportation
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• v.17 no.2
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• pp.69-79
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• 1999

This study evaluated the chance of driver's Psychophysiological load of occipital lobe at freeway merging area and compared with basic driving section. Ten persons of 8 men and 2 women were investigated at 3 basic section and 3 merging areas on the Youngdong freeway. It is found that driver's load in acceleration lane before merging is 2.21 times higher than the basic driving section. Further, driver's load for merging was maintained fur 4 seconds after merging. Particularly, driver's highest loading point in merging behavior was found to be 80m from the gore area.

• Korean Journal of Psychosomatic Medicine
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• v.14 no.1
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• pp.18-24
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• 2006

Insomnia is associated with numerous psychiatric and physical conditions, and hyperarousal is known to play an important role in the development of insomnia. There are a lot of limitations to use hypnotic medications for the treatment of insomnia. As psychological factors can greatly affect the development and progress of insomnia, several non-pharmacological treatment methods have been used for insomnia. Biofeedback is effective in the treatment of insomnia and its treatment effect lasts considerably long. Biofeedback together with relaxation techniques can reduce levels of arousal in insomnia patients so that they are effective for induction and maintenance of sleep. In conclusion, biofeedback treatment seems to be very helpful for insomnia patients who show high levels of arousal and have limitations in the use of hypnotic medications.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1998.11a
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• pp.59-64
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• 1998

정상 성인의 경우, 감성 개념의 내적 차원 구조는 쾌/불쾌 차원과 각성 차원이라는 2차원 구조에 원형의 체계적인 분포를 보이는 것으로 알려져 왔다. 본 연구에서는 이와 같은 2차원 구조가 얼마나 보편적이고 일관된 양상으로 나타나고 있는지를 살펴보고자 하였다 이를 위해 연구1에서는 아동 및 청소년에게 15개의 정서 관련 어휘로 이루어진 10i개의 단어 쌍에 대한 7점 척도의 유사성 평정을 시행하였으며, 연구 2에서는 정신분열증 환자에게 통일한 절차를 시행하였다 다차원 분석 결과, 1차원(초등5년:74%, 중등2 년:72%, 정신분열증 환자: 60%)과 2차원(초등5년: 18%, 중등2년16%, 정신분열증 환자: 11%)이 도출되었다 정상 성인의 경우와 마찬가지로 1차원은 쾌/불쾌 차원, 2차원은 각성 차원으로 해석될 수 있었다. 따라서, 감성 개념의 구조에 있어서 쾌/불쾌 및 각성은 인지적 성숙의 단계나 인지, 정서적 손상에 관계 없이 매우 일관되게 나타나는 비교적 안정적인 차원 구조인 것으로 생각된다. 다만, 발달 단계나 병리적 속성에 따라 각 차원의 비중치는 다소 차이를 보이는데, 아동 및 청소년의 경우, 주로 쾌/불쾌 차원을 통해 감성을 개념화 하는 특징을 보이며, 정신분열증 환자 집단의 경우, 1,2차원 모두 상대적으로 설명량이 낮은 것으로 나타나는데, 의 경우, 비중치가 더욱 낮은 것으로 나타났다. 이러한 결과를 통해 내적 차원 구조의 타당성 및 제한점에 관해 논의하였다.

• Journal of Korea Game Society
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• v.11 no.6
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• pp.201-212
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• 2011

This study examines the potentials of realistic controller and point-of-view to affect users' arousal, valence, identification and engagement. While media researchers have advocated the role of realistic controller and point-of-view as a possible contributor to psychological reactions of playing video game, this claim is based on a relatively small number of empirical studies. Collegiate subjects took part in an experimental investigation manipulation the level of controller realism(gamepad vs. steering wheel) and point-of-view(first person vs. third person). Results of the study showed the influence of controller realism and point-of-view on arousal, identification and engagement, and the implication of the findings are discussed.

• The Korean Journal of Zoology
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• v.36 no.1
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• pp.51-66
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• 1993

한국산 관박쥐(Rhinolophusfemmequinum koran의 웅성생식 pattern을 알아보기 위하여, 1년 주기를 통한 정소상체 이부로의 정자유입, 정자저장 및 정자소멸에 따른 상피세포와의 상관관계를 조사하여, 다음과 같은 결론을 얻었다. 정소로부터 정자유입과 정자저장 및 정자소멸에 관련하여 볼때, 정소상체 미부는 2단계의 정화기간(cleaning time)을 가진다. 첫째로, 동면 각성시기인 4월부터 6월까지는 오래된 저장정자를 파괴시켜 새로운 정자를 받아들이기 위한 준비단계로서 둘째로, 정차과정은 7월에서 8월까지 계속되는[tl 이는 7월부터 새로운 정자와 함께 유임된 기형 정자세포,기형 정자 및 기타 잔여 노페물질을 제거하여 성숙된 정자만을 보유함으로서 곧 교미기를 맞이하기 위한 준비단계로서 정화기간을 가진다. 따라서, 1년 주기를 통한 정소상체 이부의 정화기간은 동면 각성기인 4월부터 8월까지 약 5개월에 걸쳐 이루어진다. 한편, 교미가 끝난 11월부터 동면기를 거쳐 동연 각성기 전까지의 긴 기간동안에 정소상체 미부내의 저장된 정자는 급격한 변화를 가져오지 않았다. 이는 동면동안의 낮은 물질대사율과 관련이 있다고 생각된다. 이상의 결과로 미루어 보아 정자유입, 정자저장 및 정자소멸에 따른 정소상체 미부의 조직변화는 정소상체 미부내 상피세포의 분비 및 흡수의 조절작용에 의해 변학되는것이라 여겨진다.

• Science of Emotion and Sensibility
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• v.12 no.3
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• pp.279-288
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• 2009

The purpose of this study was to verify the impact of cognitive factors and GSR on the task performance. For this study 64 students participated. Multiple regression and repeated measures were applied to analyze the data. The result for the survey indicated that previous knowledge, physical efforts, and task difficulty had significant impacts on task performance. Particularly, task difficulty has a negative impact. This can be interpreted as someone who has high prior knowledge inputs higher physical efforts with low task difficulty perception will show high performance. On the other hand, the low arousal level of GSR in the evaluation stage is a prediction variable of task performance. This result shows that high prior knowledge and low arousal level of GSR produces high performance. However, the analysis of difference in GSR between learning and evaluation stages does not show significant difference. It suggests that physiological measure such as GSR is reliable index of cognitive load; however, it partially represents cognitive load. Other crucial factors should be added for comprehensive measures.

• Science of Emotion and Sensibility
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• v.20 no.3
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• pp.13-22
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• 2017

Emotion has a direct influence such as decision-making, perception, etc. and plays an important role in human life. For the convenient and accurate recognition of high-arousal negative emotion, the purpose of this paper is to design an algorithm for analysis using the bio-signal. In this study, after two emotional induction using the 'normal' / 'fear' emotion types of videos, we measured the Galvanic Skin Response (GSR) signal which is the simple of bio-signals. Then, by decomposing Tonic component and Phasic component in the measured GSR and decomposing Skin Conductance Very Slow Response (SCVSR) and Skin Conductance Slow Response (SCSR) in the Phasic component associated with emotional stimulation, extracting the major features of the components for an accurate analysis, we used a discrete wavelet transform with excellent time-frequency localization characteristics, not the method used previously. The extracted features are maximum value of Phasic component, amplitude of Phasic component, zero crossing rate of SCVSR and zero crossing rate of SCSR for distinguishing high-arousal negative emotion. As results, the case of high-arousal negative emotion exhibited higher value than the case of low-arousal normal emotion in all 4 of the features, and the more significant difference between the two emotion was found statistically than the previous analysis method. Accordingly, the results of this study indicate that the GSR may be a useful indicator for a high-arousal negative emotion measurement and contribute to the development of the emotional real-time rating system using the GSR.