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The effects of labeling gap and susceptibility artifacts in pCASL perfusion MRI (pCASL 관류 영상에서 표지 간격과 자화감수성 인공물이 영상에 미치는 영향)

  • Kim, Seong-Hu
    • Journal of the Korean Society of Radiology
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    • v.9 no.4
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    • pp.213-217
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    • 2015
  • To report problems found in a patient who has implemented stent implantation and then conducted a perfusion MRI using ASL(Arterial Spin Labeling), in order to suggest a solution to them. The perfusion MRI was conducted, using pCASL among ASL methods. Data from pCASL(Pseudo Continuous Arterial Spin Labeling) was acquired together with the structural image simply by changing position(labeling gap 15 mm, 170 mm) of the labeling pulse to avoid stent. Data was processed through the ASLtbx. When perfusion MRI was acquired using pCASL, it showed that the position of the conventional labeling pulse (labeling gap 24 mm) was overlapped with that of stent, which made signal intensity in right brain tissue appear as if it were void. When the labeling pulse was positioned (labeling gap 15 mm) to avoid stent, high signal intensity images were acquired. In labeling pulse (labeling gap 170 mm), the signal intensity was more reduced due to relaxation before labeled blood arrived at the imaging slice. pCASL can be stably repeated measurements because it does not use a contrast agent. And it should be selected with the appropriate image acquisition parameters for the high quality image.

Semi-Automatic Registration of Brain M Images Based On Talairach Reference System (Talairach 좌표계를 이용한 뇌자기공명영상의 반자동 정합법)

  • Han Yeji;Park Hyun Wook
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.41 no.1
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    • pp.55-62
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    • 2004
  • A semi-automatic registration process of determining specified points is presented, which is required to register brain MR images based on Talairach atlas. Generally, ten specified points that define Talairach coordinates are anterior commissure(AC), posterior commissure (PC), anterior feint (AP), posterior point (PP), superior point (SP), inferior point (IP), left point (LP), right point (RP) and two points for the midline of the brain. The suggested method reduces user interaction for S points, and finds the necessary points for registration in a more stable manner by finding AC and PC using two-level shape matching of the corpus callosum (CC) in an edge-enhanced brain M image. Remaining points are found using the intensity information of cutview.

An Effect of the Prefrontal Lobe Influenced by Game Music Mixed with White Noise (백색잡음을 혼합한 게임음악이 전전두엽에 미치는 영향)

  • Choi, Jong-Yun;Rhee, Dae-Woong
    • Journal of Korea Game Society
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    • v.11 no.6
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    • pp.3-11
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    • 2011
  • The sound of digital media would be able to perform communication by stimulating body's senses. Because the sound stimuli could arouse a person into the physiological excitement and sensitivity, which appear as the changes of heartbeat, blood pressure, brain waves(EEG) signals. In this paper, we would like to examine whether the game music mixed with relaxing white noises has an effect to relax game player or not through the EEG changes of game players. For the experiment, we divided game players into group A that plays game while hearing game music mixed with white noises, and group B that plays game while hearing game music not mixed. And we measured the EEG changes of the prefrontal lobe between two groups. The result shows that the game music mixed with white noises has an relaxing effect for the left brain, but fall short of the expectations for the right brain. It would be a basic research which will contribute to the development of serious games for psychotherapy using relaxing white noises.

Research on the Difference of Anti-Stress by Classification of Puberty Development Index (사춘기 발달지표 분류에 의한 항 스트레스 차이 연구)

  • Choi, Nam-Sook;Ahn, Sang-Kyun;Park, Pyong-Woon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.4
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    • pp.2505-2510
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    • 2015
  • This study was to examine the difference of Anti-Stress Quotient of pre-puberty, puberty, and post-puberty time. pre-pubescent students 28 and pubescent students, 35 classified by questionnaires from elementary and middle school students located in the Y city were participated in this research. post-pubescent students 33 were sampled from college students' data collected by Braintech Corp. And analyzed by brainwaves, which could be obtained through QEEG BQ(Brain Quotient) Analysis. The result of this study is as follow: post-puberty time was increased Anti-Stress Quotient due to the decrease of the Body Stress and the Mental Stress. It means that the psychological characteristics of puberty time can be proven by not only method of questionnaires but also scientific brainwaves.

The Effect of Dance as a Healing Art influential to Elderly Women's Brain Function (치유예술로서의 춤이 여성노인의 뇌기능에 미치는 영향)

  • Kim, Yun-Keum;Yi, Seon-Gyu;Bak, Ki-Ja
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.5
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    • pp.2655-2661
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    • 2014
  • This study is analized with how Dance as a healing art influence to elderly women's brain function measured by 2 channel system EEG(Electroencephalogram). The objects in this study are 60 aged over 65years in K city. The study started from March to July in 2013. The treatment was conducted by ones a week, 60minutes a time for 16 weeks. Participants are 30 of the experimental group and 30 of the control group checked by EEG before and after treatment. The result in experimental group is indicated as followed. The Basic Rhythm Quotient Lt(79.11/89.56, p<.015), wave length Rt((8.33/9.37, p<.003), amplitude Lt(39.87/47.19, p<.006), amplitude Rt(40.09/49.87, p<.000) did show statistically higher score after treatment. Therefore, dance as a healing art is to be proved the value and efficiency of the practical use for activating elderly women's brain function.

A Study on the Relationship between Psychophysiological Experience and Negative Attitude in Smoking Serious Games (흡연 기능성 게임에서 심리생리학적 경험과 흡연의 부정적 태도와의 관계에 대한 연구)

  • Jang, Han-Jin;Noh, Ghee-Young
    • Journal of Korea Game Society
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    • v.17 no.6
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    • pp.189-198
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    • 2017
  • The purpose of this study is to investigate the relationship between smoking attitudes and psychophysiological variables and to find out whether smoking cessation activities can be helpful for smoking cessation. We set up Negative Attitudes experience as a dependent variable. Several factors including Psychological Resistance, Psychological Distress and brainwave(Left brain ${\theta}$, Right Brain ${\theta}$) as a physiological indicator, which was expected to affect flow, were set up as independent variables to perform regression analysis. As a result, psychological resistance had negative influences on negative attitudes toward smoking in smoking simulation game and psychological distress had positive effect. And left brain ${\theta}$ had negative influences on negative attitudes toward smoking in smoking simulation game and right brain ${\theta}$ had positive effect.

A Study on the Difference of Computational Thinking and Attitude according to Left and Right Brain Preference (초등학교 로봇 활용 교육에서 좌우뇌선호에 따른 컴퓨팅사고력, 로봇에 대한 태도의 차이)

  • Noh, Jiyae
    • Journal of The Korean Association of Information Education
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    • v.24 no.4
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    • pp.327-335
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    • 2020
  • This study intends to examine the effects of education using robot on computational thinking and attitudes according to left and right brain preference. To execute the study, 17 elementary students at A youth training center in Seoul were selected to participate in the education. And the mean difference was analyzed using matched pair t-test and Mann-Whitey U test. As a result, after participating in the education, there was some statistical significance found in the scores to test student's computational thinking, but not statistical significance on the attitudes. Furthermore, there was no significance found in computational thinking or attitude according to the left and right brain preference. The purpose of this study can be found in that it expands the understanding of education using robot by verifying the efficacy and analyzing differences according to left and right brain preference.

A Meta-Analytic Review of Effects of Brain-Based Education (뇌기반 교육의 효과에 대한 메타분석)

  • Jang, Hwan Young;Jang, Bong Seok
    • Journal of Practical Engineering Education
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    • v.12 no.1
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    • pp.41-47
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    • 2020
  • This study aims to investigate effects of brain-based learning. 27 primary studies were selected through rigorous search process and analyzed through meta-analytic methods. Research findings are as follows. First, the total effect size was .67. Second, the effect of dependent variables was academic achievement, cognitive domain, and affective domain in order. Third, with respect to types of cognitive domain, the effect was self-regulation, creativity, competence, communication, and research ability in order. Fourth, the effect of affective domains was sociality, learning interest, and subject attitude in order. Fifth, regarding development of cognitive ability, the effect size was combined, brain training, learning environments, and right brain activities in order. Sixth, the effect of learning activities was memory improvement and attention enhancement in order.

The potentiality of color preference analysis by EEG (뇌파분석 통한 색상의 선호도 분석 가능성)

  • Kim, Min-Kyung;Ryu, Hee-Wook
    • Science of Emotion and Sensibility
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    • v.14 no.2
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    • pp.311-320
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    • 2011
  • To quantitatively analyze the effects of color stimulation which is one of the major affecting factors on human emotion, we studied the relationship between color preference and the Electroencephalography (EEG) to 3 color stimuli; bright yellow red (BYR), deep green yellow (DGY), and vivid blue (VB). Physiological signal measured by EEG on the color stimulation was closely related with their well-known colorful images. The brain become more activated with decreasing the color temperature (BYR${\geq}$DGY>VB), and the right brain is more sensitive than the left. On the whole, the EEG values of the frequency bands are in order to beta ${\geq}$ theta and alpha > gamma. As decreasing the color temperature, beta wave increased (BYR${\geq}$DGY>VB), and alpha, beta and gamma waves increased with increasing the color temperature (BYR${\geq}$DGY>VB). The relationship between the color preference and EEG values showed EEG gets more activated at some frequency bands when the color preference becomes higher. In conclusion, the specific frequency band could be activating by a color stimuli which had showed higher the preference. It means that these color stimuli can apply for various industries such as beauty industry, interior design, fashion design, color therapy, and etc.

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Researching Possible Uses of the Zen in the Process of Training Actors (배우의 연기훈련 과정에서 선(禪)의 활용 가능성)

  • Cho, Joon-Hui
    • The Journal of the Korea Contents Association
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    • v.13 no.11
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    • pp.106-118
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    • 2013
  • I discussed how the Zen training could be used to previous acting training methods focused on the way draw efficiently subconsciousness in the process of the training of actors. It is believed that the practice of the Zen would contribute to the development of training subconsciousness of actors. I examined the validities of the Zen practices which could be helpful to young students and existing actors' training processes and started from the existing proven analyses of mental and psychological effects of it. It is certain that the practices of Zen is a new continent which has infinite possibilities of analyzing and studying in terms of thinking highly of the Zen and brain science together. If we would utilize the Zen efficiently in the course of training actors, we could achieve four elements: the first, a trigger to operate actors' subconsciousness, the second, establishing the presence of actors through the reinforcement of concentration, the third, overcoming any mental and psychological obstacles, and the fourth, the establishment of transformation skills through the combined use of left and right brains. Additionally, actors could have mental and psychological stability through the Zen practice in their daily lives. I believe that we could also find a unique Eastern actor training way through vigorous and practical following analyses and practices which are based on the Zen tradition for training actors' subconsciousness and unconsciousness.