• Journal of the Korea Society of Computer and Information
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• v.15 no.4
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• pp.47-55
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• 2010

In this paper, we proposed a recognition system of smile facial expression for smile treatment training. The proposed system detects face candidate regions by using Haar-like features from camera images. After that, it verifies if the detected face candidate region is a face or non-face by using SVM(Support Vector Machine) classification. For the detected face image, it applies illumination normalization based on histogram matching in order to minimize the effect of illumination change. In the facial expression recognition step, it computes facial feature vector by using PCA(Principal Component Analysis) and recognizes smile expression by using a multilayer perceptron artificial network. The proposed system let the user train smile expression by recognizing the user's smile expression in real-time and displaying the amount of smile expression. Experimental result show that the proposed system improve the correct recognition rate by using face region verification based on SVM and using illumination normalization based on histogram matching.

• Journal of East-West Nursing Research
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• v.20 no.2
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• pp.160-166
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• 2014

Purse: The purpose of this study was to examine the effect of a laughter therapy on mental health promoting like depression, laughing index of elderly. Methods: The study was conducted based on the non-equivalent control group pretest-posttest design. The participations included 12 older adults in the control group and 11 in the experiment group. Data was collected from October 1 to November 22, 2013. Experimental group participated in laughter therapy six times, once a week for 60 minutes of each session. Questionnaires were used to measure pretest and posttest levels of depression and laughing index. Results: At the end of six-week intervention, depression score (z=-2.95 p=.003) and laughter index score (z=-2.81 p=.005) was significantly decreased in the experimental group compared to the control group. Futhermore, there was a significant difference in the depression scores of the experiment group at the posttest, but no signigicant difference was found between the two groups. Conclusion: The study results suggest that the laughter therapy is an effective intervention to reduce the depression but helpful to enhance the laughing index. Therefore, it is expected that laughter therapy will serve as an emotional nursing intervention for elderly patients with depression.

• Korean Journal of Psychosomatic Medicine
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• v.21 no.2
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• pp.93-98
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• 2013

Pathological laughing and crying(PLC) is a condition that is characterized by episodic, brief, contextually inappropriate, uncontrollable outbursts of laughing and/or crying. It can be observed in patients with various neurological disorders. PLC often causes distress in interpersonal functioning and activities for patients and their families. PLC can be recognized easily with proper understanding of the condition and its nature. Also it generally shows good response to various pharmacological treatments. This review aims to encourage the diagnosis and treatment of PLC by providing definition and clinical presentation of PLC, analysis of its pathophysiology and various current treatment options.

• Journal of Korean Clinical Nursing Research
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• v.20 no.2
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• pp.211-222
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• 2014

Purpose: This study was done to identify the effects of Laughter therapy on recovery status from facial paralysis, pain, and stress in Bell's palsy patients. Methods: This research was a nonequivalent control group non-synchronized pre-posttest quasi-experimental research design. Data were collected from August 8, to October 15, 2013 at D university Oriental Medical Center in B city. Participants were 60 patients with Bell's palsy who were assigned to one of two groups: an experimental group of 30 patients and a control group of 30 patients. t-test, $x^2-test$, Fisher's exact test and Welth-Aspin test were used to test the homogeneity between the two groups and t-test, Welth-Aspin test and ANCOVA were used to test the research hypotheses. SPSS program was used for statistical analysis. Results: There were significant increases in recovery status from facial paralysis and decreases in stress after Laughter therapy in the experimental group. Conclusion: The results indicate that Laughter therapy is effective in facilitating recovery status from facial paralysis and decreasing stress. Therefore, Laughter therapy can be used as an effective nursing intervention for patients with facial paralysis and to relieve stress in these patients.

• Women's Health Nursing
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• v.18 no.4
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• pp.248-256
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• 2012

Purpose: This study examines the difference of optimism, self-esteem and depression to verify an effect of laughter therapy program for menopausal women. Methods: A quasi-experimental nonequivalent control group pre / post-test design was used. The participants (n=57) were 28 in the experimental group and 29 in the control group. The data were collected in December of 2011. The experimental group participated in laughter therapy for 30 min per session, five times a week for the period of 2 weeks. The questionnaires were used to measure pre / post-test optimism, self-esteem, and depression of menopausal women. Results: The results showed that laughter therapy was effective in increasing optimism (p= .020) and self-esteem (p<.001). And the depression of menopausal women decreased (p= .003). Conclusion: The result of the study indicates that laughter therapy for menopausal women may be an effective nursing intervention to improve optimism, self-esteem and depression of menopausal women.

• Journal of Korean Biological Nursing Science
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• v.17 no.2
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• pp.123-131
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• 2015

Purpose: The purpose of this study was to examine the effect of laughter therapy on arthralgia, ankylosis, depression and sleep of elderly housebound women suffering from osteoarthritis. Methods: The study used a nonequivalent control group pretest-posttest design. The participants were 48 elderly women: 23 in the experimental group and 25 in the control group. The experimental group received laughter therapy twice a week for 4 weeks. The results were analyzed by using $X^2$-test, ANCOVA, and t-test with the SPSS/WIN 21.0 program. Results: The results showed that laughter therapy had a significant statistical effective in reducing arthralgia, ankylosis, and depression and improving the quality of sleep as evidenced by the differences between the two groups. Conclusion: The results of this study indicated that laughter therapy is an effective nursing intervention reducing arthralgia, ankylosis, and depression and improving the quality of sleep in these women. Therefore, it is necessary to develop laughter therapy as an independent nursing intervention for elderly women with osteoarthritis who are housebound.

• Journal of Korean Clinical Nursing Research
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• v.16 no.1
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• pp.83-93
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• 2010

Purpose: This study identified effects of laughter therapy administered to mastectomy patients as an adaptive coping mechanism. Methods: The study design was a non-synchronized design with a non-equivalent control group. Participants were 40 patients admitted to S hospital in Busan from July 1 to October 10, 2008. The laughter therapy was provided to the experimental group for 20 minutes, four times per week for 2 weeks in each patient's room. Results: The experimental and control groups showed significant differences in Mood (t=-2.314, p=.032), and Stress (t=-2.535 p=.020). Pain and serum cortisol in the experimental and control groups did not show any significant difference. Conclusion: Based on the findings the laughter therapy has significant effects on mastectomy patients' mood and stress.

• The Journal of the Korean dental association
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• v.41 no.12 s.415
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• pp.836-840
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• 2003

• 한국사회복지학회:학술대회논문집
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• 2007.04a
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• pp.463-472
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• 2007

• Journal of Korean Academy of Nursing
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• v.48 no.3
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• pp.298-310
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• 2018

Purpose: The purpose of this study was to examine the effects of the laughter therapy program on perceived stress and psycho-neuro-endocrine-immune responses in obese women. Methods: A nonequivalent control group with a pretest-posttest design was used. The participants (n=60), whose age ranged from 30 to 50 years (pre-menopausal and body mass index of over $25kg/m^2$), were assigned to the experimental group (n=24) or control group (n=26). The experimental group was provided with the laughter therapy program (12 sessions) for 6 weeks. Results: There were significant differences in perceived stress, psychological stress response, fasting blood sugar, interleukin-6, and tumor necrosis factor alpha between the two groups after the program. However, there were no significant differences in normalized low frequency (norm LF), normalized high frequency (norm HF), LF/HF ratio, and cortisol between the two groups after the program. Conclusion: It was found that the laughter therapy program had positive effects on some variables in terms of perceived stress and psycho-neuro-endocrine-immuno responses. It is suggested that the laughter therapy in this study can provide the direction for developing a program for obese women.