• Title/Summary/Keyword: Brain Science

Search Result 3,490, Processing Time 0.032 seconds

The Development of the Brain-based Analysis Framework for the Evaluation of Teaching-Learning Program in Science (과학 교수-학습 프로그램의 평가를 위한 두뇌기반 분석틀의 개발)

  • Lee, Jun-Ki;Lee, Il-Sun;Kwon, Yong-Ju
    • Journal of The Korean Association For Science Education
    • /
    • v.30 no.5
    • /
    • pp.647-667
    • /
    • 2010
  • The purpose of this study was to develop a brain-based analysis framework for evaluating teachinglearning program in science. To develop the framework, this study categorized educational constructs of the teachinglearning programs into one of three teaching-learning factors: cognition, motive, and emotion, using previous studies on science program. Ninety-three articles on the brain functions associated with science program were analyzed to extract brain activation regions related to the three educational constructs. After delineating the brain activation regions, we designed the brain function map, "the CORE Brain Map." Based on this brain map, we developed a brain-based analysis framework for evaluating science teaching-learning program using R & D processes. This framework consists of the brain regions, the bilateral dorsolateral prefrontal cortex, the bilateral ventrolateral prefrontal cortex, the bilateral orbitofrontal cortex, the anterior cingulate gyrus, the bilateral parietal cortex, the bilateral temporal cortex, the bilateral occipital cortex, the bilateral hippocampus, the bilateral amygdala, the bilateral nucleus accumbens, the bilateral striatum and the midbrain regions. These brain regions are associated with the aforementioned three educational factors; cognition, motivation, and emotion. The framework could be applied to the analysis and diagnosis of various teaching and learning programs in science.

A Study on the Problem Solving Styles according to Left/Right Brain Preference of Earth Science Gifted Students (좌우뇌 활용 선호도에 따른 지구과학 영재들의 문제해결방식에 관한 연구)

  • Chung, Duk-Ho;Park, Seon-Ok
    • Journal of the Korean earth science society
    • /
    • v.31 no.2
    • /
    • pp.172-184
    • /
    • 2010
  • This study is to investigate the problem solving styles according to the left /right brain preference among earth science gifted students. We took the R/LCT and the test of BPI to investigate the brain preference of earth science gifted students (N=16), and took S-CPST to investigate the problem solving styles on them. In the R/LCT, the earth science gifted students were classified into 3 groups (8 left-brain preference students, 7 right-brain preference students, 1 middle-brain preference student). In the BPI, 8 students had the appearance of left-brain preference, whereas 8 students had the appearance of right-brain preference. According to the result of S-CPST, first the left brain preference students tended to resolve a problem into simple components, then they put together each simple component. They prefer to solve a problem using numbers and mathematical signs logically, but they were afraid of giving trouble to describe own idea with pictures. Whereas the right brain preference students solved a problem with 3 steps. First, they saw an overall form of problem. Second, they tried to analyze each simple component of it, and then, made up all in one. Also, the right brain preference students observed the intuitive pattern of problem first, and then suggested the various problem solving methods later, and they took a solving plan using a picture in detail. In sum, earth science gifted students are unequal in problem solving styles according to the left/right brain preference. Thus, a teaching-learning method needs to be developed based on left/right brain preference for more effective gifted education.

Heparin Attenuates the Expression of TNF $\alpha$-induced Cerebral Endothelial Cell Adhesion Molecule

  • Lee, Jeong-Ho;Kim, Chul-Hoon;Seo, Gi-Ho;Lee, Jin-U;Kim, Joo-Hee;Kim, Dong-Goo;Ahn, Young-Soo
    • The Korean Journal of Physiology and Pharmacology
    • /
    • v.12 no.5
    • /
    • pp.231-236
    • /
    • 2008
  • Heparin is a well-known anticoagulant widely used in various clinical settings. Interestingly, recent studies have indicated that heparin also has anti-inflammatory effects on neuroinflammation-related diseases, such as Alzheimer's disease and meningitis. However, the underlying mechanism of its actions remains unclear. In the present study, we examined the anti-inflammatory mechanism of heparin in cultured cerebral endothelial cells (CECs), and found that heparin inhibited the tumor necrosis factor $\alpha$ ($TNF{\alpha}$)-induced and nuclear factor kappa B (NF-${\kappa}B$)-dependent expression of adhesion molecules, such as intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1), which are crucial for inflammatory responses. Heparin selectively interfered with NF-${\kappa}B$ DNA-binding activity in the nucleus, which is stimulated by $TNF{\alpha}$. In addition, non-anticoagulant 2,3-O desulfated heparin (ODS) prevented NF-${\kappa}B$ activation by $TNF{\alpha}$, suggesting that the anti-inflammatory mechanism of heparin action in CECs lies in heparin's ability to inhibit the expression of cell adhesion molecules, as opposed to its anticoagulant actions.

Synthesis and In vivo Evaluation of 5-Methoxy-2-(phenylethynyl)quinoline (MPEQ) and [11C]MPEQ Targeting Metabotropic Glutamate Receptor 5 (mGluR5)

  • Kim, Ji Young;Son, Myung-Hee;Choi, Kihang;Baek, Du-Jong;Ko, Min Kyung;Lim, Eun Jeong;Pae, Ae Nim;Keum, Gyochang;Lee, Jae Kyun;Cho, Yong Seo;Choo, Hyunah;Lee, Youn Woo;Moon, Byung Seok;Lee, Byung Cheol;Lee, Ho-Young;Min, Sun-Joon
    • Bulletin of the Korean Chemical Society
    • /
    • v.35 no.8
    • /
    • pp.2304-2310
    • /
    • 2014
  • The synthesis and in vivo evaluation of 5-methoxy-2-(phenylethynyl)quinoline (MPEQ) 3 as a potential mGluR5 selective radioligand is described. We have identified MPEQ 3 exhibiting the analgesic effect in the neuropathic pain animal model. The effect of mGluR5 on neuronal activity in rat brain was evaluated through FDG/PET imaging in the presence of MPEQ 3. In addition, the PET study of [$^{11}C$]MPEQ 3 proved that accumulation of [$^{11}C$]MPEQ 3 in rat brain was correlated to the localization of the mGluR5.

Development of a Magnetoencephalograph System for Small Animals (소동물용 뇌자도 측정 시스템 개발)

  • Kim, J.E.;Kim, I.S.;Kang, C.S.;Kwon, H.;Kim, J.M.;Lee, Y.H.;Kim, K.
    • Progress in Superconductivity
    • /
    • v.13 no.1
    • /
    • pp.18-23
    • /
    • 2011
  • We developed a four-channel first order gradiometer system to measure magnetoencephalogram for mice. We used double relaxation oscillation SQUID (DROS). The diameter of the pickup coil is 4 mm and the distance between the coils is 5 mm. Coil distance was designed to have good spatial resolution for a small mouse brain. We evaluated the current dipole localization confidence region for a mouse brain, using the spherical conductor model. The white noise of the measurement system was about 30 fT/$Hz^{1/2}$/cm when measured in a magnetically shielded room. We measured magnetic signal from a phantom having the same size of a mouse brain, which was filled with 0.9% saline solution. The results suggest that the developed system has a feasibility to study the functions of brain of small animals.

Homogeneity Analysis for the SMR Brainwave by the Functional Lateralization of the Brain Based on the Science Learning Methods

  • Kwon, Hyung-Kyu;Cho, Jang-Sik
    • Journal of the Korean Data and Information Science Society
    • /
    • v.18 no.3
    • /
    • pp.721-733
    • /
    • 2007
  • The purpose of this research was to determine the effects of the functional lateralization of the brain variables related to the sex, the scientific attitude and the scientific exploration skills. The science instruction is divided in each type of the lecturing class with the experiment class. As for the degree of SMR brainwave activation in each stage are presented while accumulating the brain waves from the right, left and the whole brain waves are analyzed during the science learning activities. It is therefore reasonable to consider the science instruction types and brain lateralization to enhance the science learning effectiveness. Sensorimotor rhythm brainwave as the low Beta is represented well to show the thought process. Category quantification scores and objective scores are calculated to show the visual positioning map for the relationships of the categories by homogeneity analysis.

  • PDF

Transfection of Mesenchymal Stem Cells with the FGF-2 Gene Improves Their Survival Under Hypoxic Conditions

  • Song, Heesang;Kwon, Kihwan;Lim, Soyeon;Kang, Seok-Min;Ko, Young-Guk;Xu, ZhengZhe;Chung, Ji Hyung;Kim, Byung-Soo;Lee, Hakbae;Joung, Boyoung;Park, Sungha;Choi, Donghoon;Jang, Yangsoo;Chung, Nam-Sik;Yoo, Kyung-Jong;Hwang, Ki-Chul
    • Molecules and Cells
    • /
    • v.19 no.3
    • /
    • pp.402-407
    • /
    • 2005
  • Bone marrow mesenchymal stem cells (MSCs) have shown potential for cardiac repair following myocardial injury, but this approach is limited by their poor viability after transplantation. To reduce cell loss after transplantation, we introduced the fibroblast growth factor-2 (FGF-2) gene ex vivo before transplantation. The isolated MSCs produced colonies with a fibroblast-like morphology in 2 weeks; over 95% expressed CD71, and 28% expressed the cardiomyocyte-specific transcription factor, Nkx2.5, as well as ${\alpha}$-skeletal actin, Nkx2.5, and GATA4. In hypoxic culture, the FGF-2-transfected MSCs (FGF-2-MSCs) secreted increased levels of FGF-2 and displayed a threefold increase in viability, as well as increased expression of the anti-apoptotic gene, Bcl2, and reduced DNA laddering. They had functional adrenergic receptors, like cardiomyocytes, and exposure to norepinephrine led to phosphorylation of ERK1/2. Viable cells persisted 4 weeks after implantation of $5.0{\times}10^5$ FGF-2-MSCs into infarcted myocardia. Expression of cardiac troponin T (CTn T) and a voltage-gated $Ca^{2+}$ channel (CaV2.1) increased, and new blood vessels formed. These data suggest that genetic modification of MSCs before transplantation could be useful for treating myocardial infarction and end-stage cardiac failure.

An Integrational Approach for Culinary Education based on Brain-based Teaching Principle (뇌학습 원리에 기초한 조리교육을 위한 통합적 고찰)

  • Lee, Jeong-Ae
    • Culinary science and hospitality research
    • /
    • v.24 no.3
    • /
    • pp.144-155
    • /
    • 2018
  • This study was conducted to explore the direction of culinary education based brain-based education with analysis of comprehensive research. Questionnaire was completed by frequency analysis, factor analysis, reliability analysis and regression analysis by using SPSS 21. The purpose of this study was to investigate the educational system for creative development through cooking sources and to develop brain-based learning theory, and thus to generate the characteristics and effects of the practice in culinary educational context. The basic principles of brain- based learning are brain plasticity, emotional brain, and ecological brain. Students need to be able to enrich their understanding of social interaction so that social brain's function will be activated through consistent and high-quality feedback. Likewise, students should be capable of collecting everything what they have learned. Defining main ideas and goal of the lesson, four factors were derived from development of competency, personality, application, and diversity. Regarding to the result of this study, the implications for the development of a brain-base program were suggested.

Potential role of phytochemicals in brain plasticity: Focus on polyunsaturated fatty acids

  • Yook, Jang Soo;Lee, Minchul
    • Korean Journal of Exercise Nutrition
    • /
    • v.24 no.1
    • /
    • pp.14-18
    • /
    • 2020
  • [Purpose] Functional foods are thought to strongly influence the structure and function of the brain. Previous studies have reported that brain-boosting diets may enhance neuroprotective functions. Certain foods are particularly rich in nutrients like phytochemicals that are known to support brain plasticity; such foods are commonly referred to as brain foods. [Methods] In this review, we briefly explore the scientific evidence supporting the neuroprotective activity of a number of phytochemicals with a focus on phenols and polyunsaturated fatty acids such as flavonoid, olive oil, and omega-3 fatty acid. [Results] The aim of this study was to systematically examine the primary issues related to phytochemicals in the brain. These include (a) the brain-gut-microbiome axis; (b) the effects of phytochemicals on gut microbiome and their potential role in brain plasticity; (c) the role of polyunsaturated fatty acids in brain health; and (d) the effects of nutrition and exercise on brain function. [Conclusion] This review provides evidence supporting the view that phytochemicals from medicinal plants play a vital role in maintaining brain plasticity by influencing the brain-gut-microbiome axis. The consumption of brain foods may have neuroprotective effects, thus protecting against neurodegenerative disorders and promoting brain health.

Development of the Brain Compatibility Index Equation for Brain-based Analysis of Teaching-Learning Program in Science (과학 교수-학습 프로그램의 두뇌기반 분석을 위한 두뇌맞춤지수 산출식 개발)

  • Lee, Il-Sun;Lee, Jun-Ki;Kwon, Yong-Ju
    • Journal of The Korean Association For Science Education
    • /
    • v.30 no.8
    • /
    • pp.1031-1043
    • /
    • 2010
  • The purpose of this study was to develop the brain compatibility index equation for the brain-based analysis method of science teaching-learning program. To develop the index equation, one sample unit in middle school science programs was selected and analyzed by the brain-based analysis frame (CORE Brain Map). Then, the index equation was derived by the CORE Brain Map. In addition, four sample units in elementary science programs were selected to validate the brain compatibleness index equation. From the random network theory of Erdos and Renyi, this study derived the brain compatibility index equation; (BCI=$\frac{L_o}{11(N_o-1)}{\cdot}{\sum}\limits_{i=1}^4l_iw_i$) for quantitative analysis of science teaching-learning program. With this equation, this study could find the quantitative difference among the teaching-learning programs through the unit and curriculum. Brain-based analysis methods for the qualitative and quantitative analysis of science teaching-learning program, which was developed in this study is expected, to be a useful application to analyze and diagnose various science teaching-learning programs.