• Journal of Oriental Neuropsychiatry
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• v.18 no.3
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• pp.113-122
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• 2007

The purpose of this study was to evaluate the effects of mental stress measured with heart rate variability(HRV) in healthy adults and to evaluate the effects of laserneedle acupuncture therapy in healthy adults. Methods : 25 healthy volunteers participated in this study. The volunteers were divided randomly, the real laserneedle acupuncture therapy group or the sham laserneedle acupuncture therapy group. First, After 5 minute rest, mental stress was given with stroop color word task and calculation task. And then laserneedle acupuncture therapy or sham laserneedle therapy was done on HT8(少府) for 15 minute. HRV was recorded in 3 period-before stress, after stress, and after laserneedle or sham acupuncture therapy. Results : LF was significantly increased after mental stress. And there was no significant difference between the real laserneedle acupuncture therapy group and the sham laserneedle acupuncture therapy group. Conclusions : This results show that mental stress-stroop color word test and calculation test for 10 minute- contribute to activation of the sympathetic nervous system.

• Journal of the Ergonomics Society of Korea
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• v.29 no.1
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• pp.83-91
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• 2010

Recently study on passenger' activities found that many passengers were ride in kinds of transport, e.g. car and railway while business trip. Usually choice of transport is determined by the transportation of passengers, depending on the purpose of travel. A study was therefore set up to study how efficient influence the transports about business trip. The study involved 4 subjects (4m) which divided into four groups during two day. We evaluate about the transport productivity by each day by using the car and railway. The transport productivity of car and railway was valued in HRV and Stroop Color Word Interference Test. The results showed significant differences between the car and railway. The subjects reported that use of railway is greater transport productivity than the car.

• Journal of Oriental Neuropsychiatry
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• v.20 no.1
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• pp.165-176
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• 2009

Objectives : The purpose of this study was to assess the effects of mental stress stimulation and acupucnture applied at HT7 point on heart rate variability (HRV) in normal subjects. Methods : Thirty seven healthy volunteers participated in this study. The volunteers were randomly allocated into two groups. Both groups performed a mental arithmetic stress test and stroop color-word test for 10 minute. Then, acupuncture needles were inserted on HT7 for the study group and on non-acupucnture point for the control group. HRV was recorded three times at test time and before and after acupuncture stimulation. Results : After giving mental stress stimulation to both groups, LF and LF!HF ratio were increased and HF was decreased significantly. After giving acupuncture to study group, LF and LF/HF ratio were decreased and HF was increased, but it was not significant. After giving acupuncture to control group, LF and LF/HF ratio were increased and HF was decreased, but it was not significant. Conclusions : This results show that mental arithmetic stress test and stroop color-word test contribute to activation of the sympathetic nervous system Acupuncture at HT7 could be relatively useful to decrease sympathetic activity and balance autonomic nervous system for those who are under stress.

• Korean Journal of Adult Nursing
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• v.26 no.1
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• pp.34-45
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• 2014

Purpose: The purpose of this study was to investigate the effect of laughter therapy and cognitive reinforcement program on self-efficacy, depression and cognitive functions of the elderly with mild cognitive impairments (MCI). Methods: The study design was a non-equivalent control group pre and posttest design. Thirty-six subjects over the age of 65 with a diagnosis of mild cognitive impairment were assigned either to a treatment or a comparison group. Data were collected from February 7 to March 27, 2012 in the dementia supporting center. An eight week treatment program that included laughter therapy coupled with a cognitive reinforcing program including hand exercise, laughter dance routine, laughter technic and cognitive training for attention, memory, orientation and execution skill. Results: MoCA-K (t=-6.86, p<.001) and Stroop test CW correct (t=-2.54, p=.008), self-efficacy (t=-3.62, p=.001) in the treatment group were significantly higher than those of the comparison group. Reported depression (t=2.29, p=.014), Stroop test CW error (U=53.50, p<.001) in the treatment group was significantly less than the comparison group. Conclusion: In this study, the treatment was effective in improving self-efficacy, cognitive function and reducing depression in the elderly with MCI.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.26 no.1
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• pp.45-51
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• 2015

Objectives : Children with attention-deficit hyperactivity disorder (ADHD) have been shown to display more inhibitory deficits and executive function deficits. This study investigated the treatment effects of neurofeedback (NF) training on executive function by comparing the results of neuropsychological tests of the trained children at pre- and post-training. Methods : Fifteen children with ADHD, aged 6 to 14 years, participated in the study. The NF treatment consisted of slow cortical potential (SCP) training and these sessions took place once a week. The ADHD children performed 20 sessions of NF training within 6 months. Pre-training and post-training assessments encompassed Continuous Performance Test (CPT), Stroop Test, Children's Color Trails Test I&II (CCTT) and Wisconsin Card Sorting Test (WCST). Results : Patients receiving NF training showed significant improvement in visual commission error and standard deviation of auditory response time on CPT ; and total errors on WCST. But there was no significant improvement in the Stroop test and CCTT. Conclusion : SCP training using NF improves the self-regulatory capacities and impulsivity in ADHD patient, especially impulsivity in visual stimulation tasks. This study showed evidence of clinical efficacy of NF on executive function in ADHD.

• Korean Journal of Psychosomatic Medicine
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• v.25 no.1
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• pp.63-72
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• 2017

Objectives : Attention-deficit hyperactivity disorder(ADHD) is characterized by significant impairments in executive functions, with a prevalence of approximately 3-5% of all children worldwide. The goal of this study was to examine the relationship between executive functions and electrophysiological activities in children and adolescents with ADHD. Methods : In 31 patients with ADHD, resting-state EEG was recorded, and Comprehensive Attention Test(CAT), Stroop Color-Word Inference Test(Stroop CWIT), Trail Making Test(TMT), and Wisconsin Card Sorting Test(CST) were administered. Korean version of the ADHD Rating Scale(K-ARS) was assessed. Results : Alpha and beta power positively correlated with the Attention Quotient(AQ), while delta power negatively correlated with AQ from CAT. In the Stroop CWIT, decreased delta power and increased beta power were related to higher performance. Power of the alpha band increased with higher TMT performance. Moreover, delta power negatively correlated with good performance on the CST, while alpha and high gamma band showed a positive correlation. Correlation with the parent-rating of ADHD symptoms showed a negative correlation between alpha power and higher scores on the K-ARS. Conclusions : These findings indicate that relative power in higher frequency bands of EEG is related to the higher executive function in children and adolescents with ADHD, while the association with the relative power in lower frequency bands of EEG seem to be vice versa. Furthermore, the findings suggest that QEEG may be a useful adjunctive tool in assessing patients with ADHD.

• The Journal of Korean society of community based occupational therapy
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• v.8 no.3
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• pp.59-67
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• 2018

Objective : This study was conducted to investigate the effects of occupation-based group cooking program on executive function for children in community children's center. Methods : The children who participated in the study were 7 to 9 years old. This study was based on a one-group pre-posttest design, which the group cooking program included making of sandwiches, frog-shaped hamburgers, patbingsu, sausage gimbap, and flowerpot cupcake. This study consisted of five activity sessions, which each session lasted for 120 minutes. Effectiveness of the program was measured by using the STROOP Color and Word Test, Children's Color Trails Test and Assessment of Motor and Process Skills. Results : The differences between pre and posttest scores on STROOP Color and Word Test and the process skill score of Assessment of Motor and Process Skills were statistically significant. There was no difference significantly between pre and posttest scores in Children's Color Trails Test-2. Conclusion : This study demonstrated that the group cooking program intervention has effects on cognitive inhibition executive function and performance executive function of children in the community children's center. This study suggests that occupation-based intervention can be applied to various clients in the community setting.

• Therapeutic Science for Rehabilitation
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• v.10 no.3
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• pp.23-41
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• 2021

Objective : The purpose of this study was to analyze the effects of simultaneous dual-task training to assess executive function in older adults. Methods : We searched the PubMed, EMBASE, Cochrane, Web of Science, and RISS databases of publicated studies in the past decade. Seven studies were selected based on the inclusion and exclusion criteria. Qualitative assessment and meta-analysis were performed for the seven studies. Results : A randomized controlled trial design was used in the selected studies, and PEDro Scores above seven were obtained. The Trial Making Test (TMT) evaluated the effects of dual-task training on executive function in four studies. The Color Trail Test (CTT) was used in two studies, and Stroop test was used in three studies. The effect size for total executive function was 0.38, which was small. The effect sizes for TMT and CTT were 0.37. Stroop Test was 0.34, demonstrating that their effect sizes were also small. Only significant effects in total executive function, TMT, and CTT showed significant effects (all p<0.05). Conclusion : This study confirmed that dual-task training was effective in improving executive function in older adults. To improve the effectiveness of dual-task training, the difficulty of the dual-task training should be considered. It is also necessary to implement assessments that can evaluate performance under dual-task conditions as well as conventional test tools for executive function. In the future, dual-task training could be used as an appropriate intervention for executive function in older adults to delay the onset of dementia.

• Journal of Oriental Neuropsychiatry
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• v.28 no.4
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• pp.381-390
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• 2017

Objectives: The purpose of this study is to study the personality traits and cognitive characteristics of the Sasang constitution by comparing the Personality Test and Neuropsychological Test. Methods: A total of 121 subjects were analyzed with the results of a Two Step Questionnaire for the Sasang Constitution Diagnosis (TS-QSCD). Among them, the Personality Tests (SPQ, EPQ, TCI) and the Neuropsychological Tests (A-VLT, CPM, Stroop-CWIT, WCST) were processed and analyzed for Soyangin, Taeeumin, Soeumin. Results: 1. In the results of the SPQ, the Soyangin showed a significantly higher score than did the Taeeumin and Soeumin in Behavior, Emotionality, Cognition, as well as the Total Score. The SPQ-C score and SPQ-T were significantly higher for Soyangin, Soeumin and Taeeumin, in that order. 2. In the results of the EPQ, the Soyangin showed a significantly higher score than did the Taeeumin and Soeumin in Extraversion - introversion. Soeumin showed a significantly higher score than did the Soyangin and Taeeumin in Neuroticism. Soyangin also showed a significantly higher score than Taeeumin in Venturesomeness. 3. For the results of the TCI, the Soyangin showed a significantly lower score than did Taeeumin and Soeumin in Harm-Avoidance, but a significantly higher score in Persistence and Self-Directedness. Soyangin and Taeeumin showed a significantly higher score than did Soeumin for the total score of Self-Directedness+Cooperativeness. 4. The results of the Computerized Neuropsychological Tests (A-VLT, CPM, Stroop-CWIT, WCST) showed no significant differences between the Sasang constitution. Conclusions: The EPQ, TCI score showed significant differences between the Sasang constitution. But the Computerized Neuropsychological Tests developed to evaluate cognitive abilities did not show differences between the constitutional individuals and showed limitations as a research tool. Further studies are needed to devise a research method for ascertaining the cognitive behavioral characteristics of the Sasang constitution.

• Korean Journal of Cognitive Science
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• v.23 no.1
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• pp.25-46
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• 2012

When performing a monotonous task, one often experiences an urge to quit. This urge may vary depending on how long one has performed the task (a temporal factor) and on which particular component of the task one is carrying out (an event-based factor). Using the Stroop task and a working memory task, we examined changes in the urge to quit as a function of basic temporal (repetition) and event-based (cognitive conflict) factors. Consistent with the law of least work and recent theorizing, for the memory task, urges to quit were greater following difficult trials; for the Stroop task, urges to quit were greater following incongruent than congruent trials, but only during early/novice phases of performance, when responding is inefficient. This is a demonstration of an avoidance response toward cognitive conflict. Regarding temporal sources of quitting, urges to quit were greater for late task stages than early stages. These basic findings may illuminate the nature of the more 'hot' motivational struggles involving the delay of gratification.