• Title/Summary/Keyword: Galvanic skin response

Search Result 51, Processing Time 0.021 seconds

Effects of Stimulus Incongruity on the Galvanic Skin Response of Children and Adults (불일치(不一致) 자극(刺戟)이 아동(兒童)과 성인(成人)의 전기피부반응(電氣皮膚反應)(Galvanic Skin Response)에 미치는 효과(效果))

  • Sung, Sook Ja
    • Korean Journal of Child Studies
    • /
    • v.2
    • /
    • pp.31-39
    • /
    • 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.

  • PDF

Emotion Recognition Algorithm Based on Minimum Classification Error incorporating Multi-modal System (최소 분류 오차 기법과 멀티 모달 시스템을 이용한 감정 인식 알고리즘)

  • Lee, Kye-Hwan;Chang, Joon-Hyuk
    • Journal of the Institute of Electronics Engineers of Korea SP
    • /
    • v.46 no.4
    • /
    • pp.76-81
    • /
    • 2009
  • We propose an effective emotion recognition algorithm based on the minimum classification error (MCE) incorporating multi-modal system The emotion recognition is performed based on a Gaussian mixture model (GMM) based on MCE method employing on log-likelihood. In particular, the reposed technique is based on the fusion of feature vectors based on voice signal and galvanic skin response (GSR) from the body sensor. The experimental results indicate that performance of the proposal approach based on MCE incorporating the multi-modal system outperforms the conventional approach.

Evaluation of Two-Dimensional Space of Human Sensibility Mutation by IAPS (IAPS 사진을 이용한 이차원 공간의 감성 변화 평가)

  • 민병찬;정순철;강인형;최지연;김철중
    • Science of Emotion and Sensibility
    • /
    • v.6 no.2
    • /
    • pp.21-28
    • /
    • 2003
  • Tn the present study, 9 photographs from the International Affective Picture System (IAPS) judged to express best 2-dimensional sensibility were selected and used to stimulate the subjects. The goal of the study lay in verifying whether or not the consequent affective changes in the subjects can be discriminated psychologically and physiologically in terms of arousal and relaxation. In order to determine affective changes, the physiological signals of the subjects' autonomic nervous system were measured through electrocardiogram (ECG) , galvanic skin response (GSR), skin temperature, and respiration. After stimulation and measurement, subjective evaluation was conducted. Subjective evaluation revealed that affective arousal level could be classified into 4 consecutive stages: arousal 〉 unpleasant arousal, pleasant arousal 〉 comfort 〉 relaxation. Analysis revealed that the responses of the autonomic nervous system, too, could be classified into 3 consecutive stages: arousal, unpleasant arousal, pleasant arousal 〉 comfort 〉 relaxation. By selecting and using 9 photographs from the IAPS deemed best to express Koreans'2-dimensional sensibility, the present study confirmed that it is possible to discriminate changes in the subjects' affective arousal level in terms of arousal and relaxation through psychological and physiological evaluation.

  • PDF

Characteristics in HRV(heart rate variability), GSR(galvanic skin response) and skin temperature for stress estimate (스트레스 평가를 위한 심박 변이도, 전기피부반응 및 피부온도 특성)

  • Cho, Young Chang;Kim, Min Soo
    • Journal of Korea Society of Industrial Information Systems
    • /
    • v.20 no.3
    • /
    • pp.11-18
    • /
    • 2015
  • Stress is one of the major causes threatening the mental and physical health of human today. In this paper, we analyzed the heart rate variability(HRV), galvanic skin response(GSR), and skin temperature data measured from the university subjects before and after the class to examine the influence on bio-signal in stress environment. Thirty subjects from university students (aged between 21 and 27 years; mean=22.31, STD=1.45) took part in this study. From the experiment results, RMSSD(p=0.033), LF peak(p=0.003), VLF(p=0.045) were statistically significant from those of the control group(p<0.05) of HRV both in time and frequency domain. We observed that mean skin conductivity after the class(mean=5.993(uS), SD=3.406) is higher than that before the class(mean=3.039(uS), SD=2.628) by 97.2% on average and the skin temperature after the class($34.835{\pm}0.305$) is slightly higher than that before the class($34.471{\pm}0.281$) by 1.055% on average. The results in this research could be used to examine the autonomic response in clinical stress related research.

Relationship between Physiological Response and Salivary Cortisol Level to Life Stress (생활 스트레스에 대한 인간의 생리적 반응과 타액 코티졸과의 관계)

  • Park, Sei-Kwon;Kim, Dong-Soo
    • Journal of the Ergonomics Society of Korea
    • /
    • v.26 no.1
    • /
    • pp.11-18
    • /
    • 2007
  • The physiological and biochemical responses of healthy men and women to life stress were measured in order to temperature, blood pressure (BP), heart rate (HR) and galvanic skin response (GSR) were selected as physiological stress indices and salivary cortisol level was used as a biochemical stres biomarker. Twenty six (male 14 and female 13) colege students were participated in the experiment. Female showed the significant higher value of salivary cortisol level (p<0.01), diastolic BP (p<0.01), and HR (p<0.01) than male. The difference of skin temperature between forehead and fingertip correlated significantly with salivary cortisol level (p<0.01). The LF(low frequency)/HF(high frequency) ratio of HRV also correlated significantly with salivary cortisol level (p<0.01). However, BP, HR and GSR corelated insignificantly with salivary cortisol level. We suggest that LF/HF ratio of HRV and skin temperature may be good indices for the assessment of life stress, and may apply to measure the stress level of individual in real time.

The Change of the Galvanic Skin Response in Outpatients by Dental Practice (치과시술에 따른 외래환자의 GSR변화에 관한 연구)

  • Hyun-Koo Kang;Myung-Yun Ko
    • Journal of Oral Medicine and Pain
    • /
    • v.20 no.1
    • /
    • pp.117-126
    • /
    • 1995
  • In order to evaluate objectively the level of tension and relaxation in dental practices, the author used Biotrainer(BF-102R), one of the GSR biofeedback apparatus, to examine 119 dental outpatients on their changes of GSR due to infection, preparation, extraction and readjustment. The obtained results were as follows : 1. There were no differences in the baseline GSR between the control group and the patient groups. 2. Changes in GSR by practices were significantly larger than the baseline GSR. 3. GSR in female was larger than that in male 4. While the GSR after injection, preparation and extraction revealed lower level, the GSR after readjustment revealed higher level. 5. Most of subjects just after injection, preparation and extraction were more frequent in decrease of GSR and those just after readjustment more were frequent n increase of GSR. 6. Type 1,2(increase in skin resistance) showed greater in injection, preparation and extraction group, while type 3(decrease in skin resistance) did in readjustment group.

  • PDF

Effect of High Voltage Pulsed Galvanic Current on Wound Healing in Rabbits (고압맥동 평류자극이 가토 상처치유에 미치는 영향)

  • Kim, Sik-Hyun;Park, Rae-Joon;Kwon, Hyuk-Cheol
    • Physical Therapy Korea
    • /
    • v.3 no.3
    • /
    • pp.67-81
    • /
    • 1996
  • This study was performed to assess the efficacy of high voltage pulsed galvanic current for the healing of wounds in rabbits. Skin wounds were created laterally on the flank of 12 domestic rabbits($3{\times}3cm$). The wounds of each group were treated with an intensity of 170 V at a frequency of 70 pulses per second, which was applied for 30 minutes a day for 10 days. The experimental groups were randomly assigned to either EXP I (n=3), EXP II(n=3), EXP III(n=3) or control(n=3). Each group was stimulated under the following conditions : 1) EXP I (Negative polarity), 2) EXP II (Change in polarity, negative electrode stimulation during the first 3 days and then positive electrode stimulation from 4 to 10 days), 3) EXP III(Positive polarity), 4) control(No stimulation). An active electrode was placed over the wound and a dispersive electrode on the buttock. The rate of wound closure was compared with the original wound size, evaluated by a tracing film in each measurement period. Finally, on the wound in each group, skin tissue was excised for histological evaluation after treatment for 10 days. The results obtained are as follows : 1) It was found that the control group did not show a complete remodeling of epitherial layer and had a chronic inflammatory response. Judging from the irregularity of intercellular space and the loose alignment of connective tissue, these findings show that wound healing was delayed. 2) EXP I showed a significant bactericidal effect, but a moderate response of vasodilation. The rate of wound closure was slower when compared with EXP II, III. 3) EXP II showed a complete remodeling of epitherial layer and a positive repair of connective tissue. Its rate of wound closure was best when compared with the others. 4) EXP III had a slower rate of wound closure than EXP II, but judging from the greater proliferation of collagen fibers and the dense alignment of connective tissue, this positive electrode was very effective in the formation of neo - connective tissue.

  • PDF

Measurement of Emotional Transition Using Physiological Signals of Audiences (관객의 생체신호 분석을 통한 감성 변화)

  • Kim, Wan-Suk;Ham, Jun-Seok;Sohn, Choong-Yeon;Yun, Jae-Sun;Lim, Chan;Ko, Il-Ju
    • The Journal of the Korea Contents Association
    • /
    • v.10 no.8
    • /
    • pp.168-176
    • /
    • 2010
  • Audience observing visual media with care experience lots of emotional transition according to characteristics of media. Enjoy, sadness, surprising, etc, a variety of emotional state of audiences is often arranged by James Russell's 'A circumplex model of affect' utilized on psychology. Especially, in various emotions, 'Uncanny' mentioned by Sigmund Freud is represented a sharp medium existing in a crack of clearly emotional conception. Uncanny phenomenon is an emotional state of changing from unpleasant to pleasant on an audience observing visual media is been aware of immoral media generally, therefore, because this is a positive state on a social taboo, we need to analyze with a scientific analysis clearly. Therefore, this study will organize James Russell's 'A circumplex model of affect' and uncanny phenomenon, will be progressed to establish a hypothesis about a state of uncanny on audiences observing visual media and analyze results of the physiological signals experiment based on ECG(Electronic Cardiogram), GSR(Galvanic Skin Response) signals with distribution, distance, and moving time in a circumplex model of affect.

A Study on Ubiquitous Psychological State Recognition Model Using Bio-Signals (생체정보를 이용한 유비쿼터스 심리상태 인식 모델 연구)

  • Chon, Ki-Hwan;Choi, Hyung-Jin
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.35 no.2B
    • /
    • pp.232-243
    • /
    • 2010
  • In this paper, various physiological signals of humans were measured and analyzed to inference their psychological state and biological information, and Bio-Signal Context aware system (BSC), which recognizes the current context of its users as well as the information of exterior environment and offers the service appropriate for them, was designed and implemented. The BSC extracts and analyzes the features from bio-signals, such as the measured electroencephalogram (EEG), electrocardiogram (ECG), and galvanic skin response (GSR), with its different sensors, has the input of the analyzed results, and discriminates four psychological states of rest, concentration, tension and melancholy. In addition to the results of the discriminated psychological states, the information of biological condition analyzed from the user's bio-signals, for example, heart rate variability (HRV), Galvanic skin response (GSR) and body temperature, and the information of external environment related to the user's are collected to offer the service fit for the user's present biological condition by inferring and recognizing the user's present situation.

The Effect of Pain Relieving Intervention During Infiltration among Gamma Knife Surgery Patients for Stereotactic Frame Fixation (감마나이프 수술 환자의 정위적 틀 고정을 위한 침윤 마취 시 통증 완화 중재의 효과)

  • Jang, Young Jun;Kim, Hyeon Ok
    • Journal of Korean Academy of Nursing
    • /
    • v.48 no.2
    • /
    • pp.221-231
    • /
    • 2018
  • Purpose: This study aimed to compare the effects of three interventions on pain, blood pressure, and pulse rate during infiltration anesthesia in patients about to undergo gamma knife surgeries. Methods: The three interventions employed in a university-affiliated Hospital in J City, South Korea were as follows: EMLA cream plus Vapocoolant spray (Vapocoolant, n=30), EMLA cream plus 10.0% Lidocaine spray (Lidocaine, n=30), and EMLA cream only (EMLA, n=30). The equivalent control-group pre test - post test study design was used. Pain was assessed subjectively using the numeric rating scale (NRS) and objectively using a Galvanic Skin Response (GSR) tester. NRS scores were assessed after infiltration anesthesia and the GSR was assessed during infiltration anesthesia. Blood pressure and pulse rate were assessed twice: before and after infiltration anesthesia. Data were collected between August 3, 2016 and March 24, 2017. Results: NRS scores after infiltration anesthesia and the GSR during infiltration anesthesia were significantly lower in the Vapocoolant group than in the Lidocaine and EMLA groups (F=13.56, p<.001 and F=14.43, p<.001, respectively). The increase in systolic blood pressure (F=4.77, p=.011) and in pulse rates (F=4.78, p=.011) before and after infiltration anesthesia were significantly smaller in the Vapocoolant group than in the Lidocaine and EMLA groups; however, no significant differences were observed in diastolic blood pressures (F=1.51, p=.227). Conclusion: EMLA cream plus Vapocoolant spray was the most effective intervention to relieve pain and to lower increase in systolic blood pressure and pulse rate caused by infiltration anesthesia for stereotactic frame fixation. Thus, application of Vapocoolant spray in addition to EMLA cream is highly recommended as a nursing intervention for patients undergoing gamma knife surgeries.