• 대한의용생체공학회:의공학회지
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• 제18권1호
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• pp.79-86
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• 1997

This paper describes the development of portable arousal measurement and analysis system. Skin impedance change which responds to the change of arousal level was detected by the three elctrode constant current method and separated into two components(SIR, SIL). Relationship between Nz, IRI and arousal level was studied and criteria of arousal level control was decided by the sleep study. Measured data with and without warning signal were compared and analyzed.

• 대한의용생체공학회:의공학회지
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• 제18권4호
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• pp.477-484
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• 1997

본 논문에서는 각성도 평가시 초기 각성상태 차이에 따른 보상방법을 제안하고 보상상수를 결정하였다. 각성도는 IRI와 Nz에 의하여 측정되었다. BI는 초기 저각성상태의 영향을 많이 받게 되며 이는 각성도의 지표인 Nz 값에 영향을 주게 되어 각성수준이 실제보다 높게 평가된다. 따라서 본 연구에서는 BI의 과대평가로 인한 오판정 문제를 해결하기 위하여 수정된KSS 측도(mKSS)를 이용한 보상법을 제안하고 각성수준에 따른 수정된 KSS 측도에 대응하는 보상상수를 결정하였다. 이 보상상수를 개발된 휴대형 각성도 측정 시스템에 적용하여, 실시간으로 각성도를 평가 및 제어한 결과, 본 연구에서 제안한 보상법 및 보상상수의 유용성을 확인하였다.

• 센서학회지
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• 제4권3호
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• pp.30-36
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• 1995

교통사고의 가장 큰 원인 중의 하나는 운전자의 각성수준의 저하이다. 적절한 각성수준을 갖는 운전자 만이 자동차를 안전하게 운전하여 목적지에 도착할 수 있다. 본 연구에서는 이러한 운전자의 각성도를 측정하기 위하여 피부 임피던스를 이용한 측정 시스템을 구성하고 이를 이용하여 6인의 피검자의 피부 임피던스의 변화와 뇌파를 동시에 측정하여 각성수준의 변화에 따른 세 측정 요소간의 상관관계를 검토하고 피부임피던스 지표를 구하였으며 측정에 따른 문제점들을 분석하여 운전자의 각성도 측정 및 평가와 모니터 개발을 위한 기초적인 연구를 하였다.

• 아동학회지
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• 제2권
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• pp.31-39
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• 1981

Despite evidence from adults that stimulus incongruity increased arousal level, there have been no published reports demonstrating this relationship with children. Therefore, the present study was done to 1) investigate the relationship between the introduction of stimulus incongruity and children's arousal level, using the GSR as an index of arousal; 2) determine whether age difference among subjects would affect the magnitude of the effect of incongruity on GSR ; and 3) determine the feasility of using the GSR with young children, particularly when manipulating a variable considered to involve only modest increase in arousal. The results were: 1) The incongrous outcome of two brief stories increased the arousal level of the subjects in the present study 2) The effect was related primarily in the GSR arousal scores of adult subjects. The smaller or nonexistent reactions to incongruity by the children represent essentially new results, as little or previous research exists involving the arousal level of young children to visual or auditorily presented stimuli. Several possibilities regarding the failure of the incongruity to generate arousal in the young children were considered Methodolog both in using GSR as an index of arousal level and in developing visual or audio stimuli involving incongruity was discussed.

• 감성과학
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• 제14권2호
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• pp.197-206
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• 2011

본 논문에서는 신경망 SOM학습을 이용하여 피험자의 각성수준을 높은각성과 낮은각성으로 자동인식하는 것을 제안한다. 각성수준의 자동인식 단계는 세 단계로 구성된다 첫 번째는 ECG 측정 및 분석단계로 슈팅게임을 플레이하는 피험자를 ECG로 측정하고, SOM 학습을 하기 위해 특징을 추출한다. 두 번째는 SOM 학습 단계로 특징이 추출된 입력벡터들을 학습한다. 마지막으로 각성인식 단계는 SOM 학습이 완료된 후에 새로운 입력벡터가 들어왔을 때, 피험자의 각성수준을 인식한다. 실험결과는 각성수준의 SOM 학습결과와 새로운 입력벡터가 들어왔을 때 각성수준의 인식결과, 그리고 각성수준을 수치와 그래프로 보여준다. 마지막으로 SOM의 평가는 기존연구의 감성평가 결과와 SOM의 자동인식 결과를 순차적으로 비교하여 평균 86%로 분석되었다. 본 연구를 통해서 SOM을 이용하여 피험자마다 다른 각성수준을 자동인식 할 수 있었다.

• Asia Marketing Journal
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• 제18권1호
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• pp.37-53
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• 2016

The purpose of this study is to show that the effectiveness of utilitarian versus hedonic attributefocused advertisement on product evaluation depends on the arousal level of positive emotion, and to explore mediation effect of cognitive response to utilitarian attribute-focused advertisement and affective response to hedonic attribute-focused advertisement on the effectiveness of utilitarian versus hedonic attribute-focused advertisement. This research employs a 2 (arousal level: mild vs. elevated) × 2 (advertisement type: utilitarian vs. hedonic) between-subjects design, and 200 undergraduate students participate in the experiment, in which there are 50 students at each experimental group. The results of ANCOVA with positive emotion level as a covariate on advertised product evaluation show significant interaction effect of arousal level and advertisement type, and no effect of positive emotional level. Both of the mediation effects of the cognitive response and those of the affective response are significant. Participants under mild (elevated) arousal of positive emotion more positively evaluate the product in utilitarian (hedonic) attribute-focused advertisement. The positive effect of utilitarian (hedonic) attributefocused advertisement on product evaluation is partially mediated by cognitive (affective) response to the advertisement when consumers are under the mild (elevated) arousal of positive emotion. The results of this study show that advertisers should use utilitarian (hedonic) attribute-focused advertisement to consumers under the mild (elevated) arousal of ambient positive emotion, which should be searched by exploring what kind of event they have experienced.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1996년도 춘계학술대회
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• pp.60-64
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• 1996

This paper describes the development of portable arousal measurement and analysis system. Skin impedance change which responds the change of arousal level was detected by the three electrode constant current method and separated into two components (SIR, SIL). Relationship between Nz, IRI and arousal level was studied and Criteria of arousal level control was decided by the sleep study.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1996년도 추계학술대회
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• pp.86-89
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• 1996

This paper describes compensation method to evaluate arousal level in different initial arousal state. Arousal level was measured by the relationship between IRI and Nz. The value of Nz is affected by BI which is variable with initial drowsiness. we introduced a correction factor to compensate these differences.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1996년도 추계학술대회
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• pp.372-376
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• 1996

This paper describes the criterias to evaluate arousal states of subject and these are applied to contort arousal level. Correction factor was introdued to compensate under or over evaluated Nz due to the different initial basal skin impedance. These criteria and correction factor were worked well to increase the arousal level.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
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• pp.1856-1859
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• 1997

This paper describes the arousal measurement and the control system using fuzzy logic to prevent drowsy driving. Sugeno's method was used for fuzzy inference in this study. Membership function and rule base were determined form the modfied arousal level criteria. The output of fuzzy inference tracked well the change of subject's arousal level. When IRI(Inter-SIR interval) was under the 60sec, maximum output of three step warning method was medium sound, but that of fuzzy logic system was changed from medium to big. Furthermore, the output of the fuzzy inference was highly correlated with $N_{z}$(r=0.99). Therefore, the fuzzy inference method for evaluation and the control of arousal will be more effective at real driving sityation than three step warning method.ning method.