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최상섭 ( Sang Sup Choi ),조문재 ( Moon Jae Jho ),이경화 ( Kyung Hwa Lee ),민윤기 ( Yoon Ki Min ),오애령 ( Ae Reyoung Oh ),손진훈 ( Jin Hun Sohn ) 한국감성과학회 1998 추계학술대회 Vol.1998 No.-
This study investigated the psychological and physiological responses to the sound of car horns produced by different manufacturers. Ten female college students listened to the sound of the horns while their EEG responses on 6 sites were being measured, and rated each hom on psychological scales. Their EEG and psychological responses were investigated as to whether the responses were related to the loudness, sharpness, tonality, and roughness of the horns. The results indicated that the subjects felt more ``dominated`` as the loudness and sharpness increased, that the subjects felt more ``pleasant`` as the sharpness increased, that the subjects felt more ``dominant`` as the tonality increased, and that the subjects felt more ``aroused`` as the roughness increased. The physiological results showed that the fast alpha wave in the occipital lobe decreased in the relative power as the loudness, sharpness, and tonality increased, and that the delta wave in the occipital lobe increased and the slow alpha wave in the frontal lobe decreased in the relative power as the roughness increased.
문성실 ( Sung Sil Moon ),최상섭 ( Sang Sup Choi ),류창수 ( Chang Su Ryu ),김경옥 ( Kyung Ok Kim ),손진훈 ( Jin Hun Sohn ) 한국감성과학회 1998 춘계학술대회 Vol.1998 No.-
두 문자열의 동일성 판단과 뇌파와의 관계가 탐색되었다. 피험자들은 컴퓨터의 화면에 나타나는 두 문자열의 동일성 여부를 판단하여 반응 키를 누르는 과제를 수행하였으며, 이화 동시에 피험자들의 뇌파가 기록되었다. 긍정 반응과 부정 반응 시의 뇌파를 비교한 결과, 좌측 전두엽 부위의 theta파, slow alpha파, fast alpha파 그리고 우측 전두엽 부위의 theta파 그리고 우측 전두엽 부위┌ theta파 등이 긍부정 반응에 따라서 유의한 차이를 보였다.
( Estate Sokhadze ),최상섭 ( Sang Sup Choi ),이경화 ( Kyung Hwa Lee ),김연규 ( Yeon Kyu Kim ),손진훈 ( Jin Hun Sohn ) 한국감성과학회 1999 추계학술대회 Vol.1999 No.-
It is well known that a long-term exposure to a loud noise environment affects performance, since it distracts attention, and also is able to evoke stress accompanied by negative emotional states. The purpose of this study was to analyze dynamics of subjective and physiological variables during long-lasting (30 min) exposure to intensive white noise (85 dB[A]). Physiological signals on 23 college students were recorded by BIOPAC, Grass Neurodata systems and AcqKnowledge 3.5 software. Autonomic variables, namely skin conductance level (SCL), non-specific SCR number (N-SCR), inter-beat intervals in ECG (RR intervals), heart rate variability index (HF/LF ratio of HRV), respiration rate (RESP), and skin temperature (SKT) were analyzed on 5 min epoch basis. Psychological assessment (subjective rating of stress level) was also repeated on every 5 min basis. Regression and correlation analyses were employed to trace the time course of the dynamics of the subjective and autonomic physiological variables and their relationship. Results showed that intense noise evokes subjective stress with associated autonomic nervous system responses. However, it was shown that physiological variables endure specific changes in the process of exposure to loud white noise. Discussed are probable psychophysiological mechanisms mediating reactivity to long-term auditory stimulation of high intensity.
장은혜 ( Eun Hye Jang ),최상섭 ( Sang Sup Choi ),이경화 ( Kyung Hwa Lee ),손진훈 ( Jin Hun Sohn ) 한국감성과학회 2009 감성과학 Vol.12 No.1
본 연구의 목적은 TV 화질에 대한 사용자들의 심리적 특성을 평가하기 위한 화질평가척도를 개발하고, TV 화질의 심리 특성과 물리적 특성의 관계를 확인하는 것이다. TV 화질과 관련된 형용사 152개 중 집단설문(남녀 대학생 80명)을 통하여 TV 화질을 잘 표현하는 형용사로 19개의 형용사를 선정하였다. 선정된 형용사는 다음과 같다; `깔끔하다-지저분하다`, `깨끗하다-더럽다`, `산뜻하다-침울하다`, `편안하다-긴장된다`, `매끄럽다-거칠다`, `밝다-어둡다`, `화려하다-수수하다`, `변화스럽다-단조롭다`, `자연스럽다`, `감각적이다`, `만족스럽다`. 126명의 남녀 대학생을 대상으로 이들 형용사의 유사성 평정을 실시하고, 유사성 점수에 대하여 요인분석(주성분분석, oblique 회전)을 실시한 결과, `깔끔함` 차원과 `화려함` 차원으로 분류되었다. 그리고 31명의 남녀 대학생을 대상으로 TV 화질에 대한 감성과 물리적 특성과의 관계를 확인하였다. 그 결과 TV 화질에 대한 감성 형용사들은 밝기, 명암, 색농도와 색상의 변화에는 민감하였으나, 선명도의 변화에는 민감하지 않은 것으로 나타났다. The article reports findings on: (1) development of emotion assessment scale in evaluating the Television(TV) picture quality; and (2) how psychological and physical factors relate to TV picture quality. A total of 152 adjectives that specifically describe emotional reactions were first selected from a Korean dictionary of adjectives, followed by ratings on their suitability for the evaluation of TV picture quality. The final selection of 19 adjective, based on the reported rating scores greater than 4.1, were used on 126 college students who were asked to perform similarity ratings on the adjectives. Based on factor analyses (i.e., principal component analysis with oblique rotation) on the similarity of scores, the following adjectives were selectively chosen for the development of the new emotion assessment scale: `neat-messy`, `refreshing-gloomy`, `clean-dirty`, `comfortable-tense`, `smooth-rough`, `bright-dark`, `gorgeous-plain`, `diverse-monotonous`, `satisfying`, `natural`, and `sensuous`. These adjectives composed into two distinct constructs, `cleanness or smart` factor and `gorgeousness` factor, which demonstrated sensitivity to changes in brightness, contrast, color, and tint in the TV picture quality, except for changes in sharpness.
시각자극에 의해 유발된 스트레스 생리반응의 회복과정에 미치는 정서청각자극의 효과
( Estate Sokhadze ),이임갑 ( Im Gap Yi ),최상섭 ( Sang Sup Choi ),이경화 ( Kyung Hwa Lee ),손진훈 ( Jin Hun Sohn ) 한국감성과학회 1998 춘계학술대회 Vol.1998 No.-
Effects of the music and white noise on recovery of the autonomic and cortical responses evoked by aversive visual stimulation were analyzed in 20 subjects. It was suggested that the music is able to exert modulatory influence on the physiological activity resulted from exposure to unpleasant IAPS based stimuli. Spectral power of DDG, heart rate(HR)respiration rate (RSR) and electrodermal activity(EDA)were recorded and analyzed for each experimental condition. It was observed HR and RSR deceleration, increased EDA and electrocortical activation expressed in decreased alpha power and increase of delta activity ao occipital and frontal areas. Obtained results suggest that audutory stimulation both with pleasant and sad music lead to restoration of pre-stimulation activation levels of most physiological parameters during listenning to music and in post-stimulation period. White noise evoked short-term physiological responses typical for orienting reaction and quite distinct from changes produced by music. Available data to differentiate effeces among pleasant and sad music, due toqualitative similarities of physilolgical patterns, but suppert an assumption that music is capable to facilitate the process of recovery of physilolgical responses elicited by visual stimulation of negative valence, thus positively modulate post-stress state.
시각 자극에 의하여 유발된 긍/부정 정서의 뇌파 및 자율신경계 반응의 차이
이임갑 ( Im Gap Yi ),이경화 ( Kyung Hwa Lee ),( Estate Sokhadze ),최상섭 ( Sang Sup Choi ),손진훈 ( Jin Hun Sohn ) 한국감성과학회 1998 추계학술대회 Vol.1998 No.-
Autonomic and EEG responses of 38 college students were studied during 60-sec long presentation of International Affective Picture System (IAPS)slides evoking, according to subjective reports, negative (disgust, sadness, surprise) and positive (happiness, exciting) emotional states. Observed were significant heart rate (HR) deceleration, large skin conductance responses (SCR), moderate respiration frequency slowing, reduction of frontal (F3, F4 ) and occipital (O1, O2 ) fast alpha, and increases of theta, delta and beta relative spectral power values during the first 30 sec of exposure of IAPS pictures. Analysis carried out to differentiate emotion categories according to autonomic responses indicated that observed HR deceleration was larger in magnitude in surprise and sadness than in disgust, SCR amplitude higher in sadness than in disgust. EEC showed significant differences in theta (F3, F4 ) and delta (O1) power increase in disgust vs. happiness, fast alpha (F3, F4 ) power was lower in surprise than in happiness, and slow beta power higher. in happiness than in disgust (01). Despite some differences. observed within discrete emotion conditions, overall responses pattern of monitored parameters exhibited similar profiles with few variations, most. obvious. in disgust state, which suggests that affective visual stimulation elicits stereotypical responses in a given passive viewing paradigm. However, the magnitude of physiological responses may vary to certain extent across discrete emotional states making it possible to differentiate among particular experimentally-induced emotional states, e.g., disgust vs. sadness by ANS responses or disgust vs. happiness by EEG measures. (Supported by K RF grant.# 19997 - OOI-C00488 )