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피부자극에 의해 나타나는 감성변화의 평가를 위한 HRV 수펙트럼 분석
손진훈 ( Jin Hun Sohn ),임재중 ( Jae J. Im ),이경화 ( Kyung Hwa Lee ),여형석 ( Hyung S. Yeo ),박진우 ( Jin W. Park ) 한국감성과학회 1997 연차 학술대회 논문집 Vol.1997 No.-
Objective of this study was to find the conrrelation between emotional changes and the parameters of HRV spectrum evoked by tactile stimulation. Twenty-one subjects were used and five different types of materials, dry cotton, wet cotton, paper, sandpaper, and vinyl were applied to the left hand of each subject as a tactile stimulation. The results showed that HF/LF (ratio of high to low frequency amplitude calculated from power spectrum of HRV) decreased as the subject experienced the unpleasant emotion caused by wet cotton and sandpaper. On the other hand, when the subject experienced the comfort, HF/LF increased. It was concluded that the proposed methods can be applied to evaluate the characteristic changes in the autonomic nervous system which regulates the human emotion in the psychological aspects.
국제정서사진체계(IAPS)를 이용한 정서 및 자율신경계 반응 연구: 1/f 음악 및 white noise가 스트레스 회복단계에서의 피부전기반응 및 심박호흡계 반응에 미치는 영향
손진훈 ( Jin Hun Sohn ),( Estate Sokhadze ),김지은 ( Ji Eun Kim ),이경화 ( Kyung Hwa Lee ),이임갑 ( Im Gap Yi ) 한국감성과학회 1997 연차 학술대회 논문집 Vol.1997 No.-
The special interest should be paid to the analysis of the influences of positive emotions in terms of their possible effects on the dynamics of autonomic recovery after the negative affective stimulation. Taking into account emotion-specific autonomic response patterning and dissociation of parameters of autonomic arousal during experience of both positive and negative emotional states, this problem seems a challenging one. In present study several autonomic parameters were analyzed altogether, namely indices of electrodermal activity, heart rate and respiration rate during consecutive combination of both lAPS-based visual affective and auditory stimulation. The aim of the study was analysis of patterns of electrodermal and cardiorespiratory responses during emotional states evoked by negative affective visual stimulation followed by positive or neutral auditory one with intention to identify if the latter is able to facilitate post-stress recovery and enhance restoration of pre-arousal levels. The main orientation Was directed towards the further application of expelimentally induced comfort emotions for dampening the negative consequences of exposure to stressful stimuli.
소음상황에서 인지적 과제에 의해 유발된 스트레스에 대한 자율신경반응의 기제
손진훈 ( Jin Hun Sohn ),( Estate M. Sokhadze ),이경화 ( Kyung Hwa Lee ),김연규 ( Yeon Kyu Kim ),최상섭 ( Sang Sup Choi ) 한국감성과학회 1999 추계학술대회 Vol.1999 No.-
A mental task combined with noise background is an effective model of laboratory stress for study of psychophysiology of the autonomic nervous system (ANS). The intensity of the background noise significantly affects both a subjective evaluation of experienced stress level during test and the physiological responses associated with mental load in noisy environments. Providing tests of similar difficulties we manipulated the background noise intensity as a main factor influencing a psychophysiological outcome and the analyzed reactivity along withe the noise intensity dimension. The goal of this study was to identify the patterns of ANS responses and the relevant subjective stress scores during performance of word recognition tasks on the background of white noise (WN) of the different intensities (55, 70 and 85 dB). Subjects were 27 college students (19-24 years old). BIOPAC, Grass Neurodata System and AcqKnowlwdge 3.5 software were used to record ECG, PPG, SCL, skin temperature, and respiration. Experimental manipulations were effective in producing subjective and physiological responses usually associated with stress. The results suggested that the following potential autonomic mechanisms might be involved in the mediation of the observed physiological responses: A sympathetic activation with parasympathetic withdrawal during mild 55 and 70dB noise (featured by similar profiles) and simultaneous activation of sympathetic and parasympathtic systems during intense 85dB WN. The parasympathetic activation in this case might be a compensatory effect directed to prevent sympathetic domination and to maintain optimal arousal state for the successful performance on mental stress task. It should be mentioned that obtained results partially support Gellhorn``s (1960; 1970) tuning phenomenon as a possible mechanism underlying stress response.
손진훈 ( Jin Hun Sohn ),박현영 ( Hyun Young Park ),문성실 ( Sung Sill Moon ),최상섭 ( Sang Sup Choi ),강대임 ( Dae Im Kang ) 한국감성과학회 1998 추계학술대회 Vol.1998 No.-
This study developed a test with a high test-retest reliability consisting of 18 items by selecting from Korean adjectives describing tactile sensations. Principal components were extracted by three repeated measurements of 19 different fabrics for underwear. Adjectives such as ``smooth`` ``soft`` ``sexy`` ``comfortable`` and ``cozy`` were most discriminating between preferred and non-preferred fabrics. The fabrics were analyzed by Kawabata Evaluation System in 16 mechanical properties, then these properties were analyzed by regression analyses as to their relations with human sensation and sensibility. Among the fabrics, the most preferred were made of polyester whereas the least preferred were made of gauze and cotton. Mechanical properties were identified that were related to the most discriminating adjectives such as ``smooth``, ``soft``, ``sexy,`` and ``cozy``.
손진훈 ( Jin Hun Sohn ),권윤주 ( Yoon Joo Kwon ),민윤기 ( Yun Gi Min ),최상섭 ( Sang Sup Choi ) 한국감성과학회 1999 추계학술대회 Vol.1999 No.-
본 연구는 생활 소음이 유발하는 유해성을 객관적으로 평가할 수 있는 감성 척도를 개발하고, 그 척도를 이용하여 생활 소음과 소음에 대한 감성간 관계를 반영하는 감성 지수를 도출하고자 수행되었다. 먼저 소음에 대한 주관적 느낌을 잘 기술해주는 27 개의 형용사를 선정한 뒤 세 가지의 실제 주거 소음을 들려주며 소음에 대한 감성을 27 개의 형용사에 대해 평가하게 하였다. 이 결과에 대한 요인분석을 실시하여 ``지배성``, ``쾌/불쾌``, ``각성`` 차원의 세 개 차원으로 구성되는 14 개의 최종적 소음 감성 척도를 개발하였다. 다음으로 실제 주거 생활에서 소음과 감성간 관계를 알아보기 위해 실제로 4 가지의 주거 소음을 들으면서 인지적 과제를 수행하게 하여 소음에 대한 느낌을 소음 감성 척도상에 평가하게 하는 실험을 실시하였다. 이 결과 소음의 크기가 증가할수록 소음에 대한 감성이 부정적으로 나타나는 직선적 관계가 얻어졌고. 이를 기초로 일차 방정식 형태의 소음-감성 지수를 도출하였다.