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한동욱,유환진,박지훈 한국자료분석학회 2009 Journal of the Korean Data Analysis Society Vol.11 No.4
The purpose of this study was to find out that working cognition task can be make alternation on normal EEG power and coherence in normal elderly women. 20 normal elderly women were participated in this study. All subjects performed working cognition task with Raven's CPM while electroencephalograph(EEG) signal was recorded. EEGs were measured continuously at rest and during working cognition task. EEG power and coherence was computed over 21 channels; righe and left frontal, central, parietal, temporal and occipital region. A kind of electroencephalogram was θ1(4~5㎐), θ2(6~7㎐), α1(8~9.9㎐), α2(10~11.9㎐), α3(12~13㎐), β1(14~25.9㎐), and β2(26~40㎐). θ1 wave was increased significantly at Fz, F3, F7, F8, Cz, C3, C4, T3, T4, T6, Pz, O1 and O2. and θ2 wave was increased significantly at Fz, F3, F7, F8, T3, O1 and O2 during cognitive working task. α1 wave was decreased significantly at Fz, F4, Cz, C3, C4, T3, T4, T5, T6, Pz, P3, P4 and O1, and α2 wave was decreased significantly at Fz, F4, Cz, C3, C4, T4, T5, T6, Pz, P3, P4, O1 and O2 during cognitive working task. α3 wave was increased significantly at F3, F4, F7 and F8, but decreased significantly at Cz, C4, Pz, P3 and P4 during cognitive working task. β1 wave was increased significantly at F3, F4, F7, F8 and T4, but decreased significantly at Cz, Pz, P3 and P4 during cognitive working task. β2 wave was increased significantly at F3, F4, F7, F8, T4, O1, O2 during cognitive working task. In conclusion, These results suggest that θ1, θ2 and β2 waves were increased, but α1 and α2 waves were decreased during cognitive working task. 이 연구의 목적은 인지활동이 정상여성노인의 뇌파에 미치는 영향을 분석하는 것으로 20명의 정상여성노인을 대상으로 하였다. 뇌파측정은 21개 전극을 사용해 전두엽, 중심엽, 두정엽, 측두엽과 후두엽에서 측정하였다, 분석에 사용한 뇌파는 θ1(4~5㎐), θ2(6~7㎐), α1(8~9.9㎐), α2(10~11.9㎐), α3(12~13㎐), β1(14~25.9㎐)과 β2(26~40㎐) 파이었다. 연구 결과 θ1 파는 인지활동을 하는 동안 Fz, F3, F7, F8, Cz, C3, C4, T3, T4, T6, Pz, O1, O2 영역에서, θ2 파는 Fz, F3, F7, F8, T3, O1, O2 영역에서 유의한 증가가 있었다. α1 파는 Fz, F4, Cz, C3, C4, T3, T4, T5, T6, Pz, P3, P4, O1 영역에서, α2 파는 Fz, F4, Cz, C3, C4, T4, T5, T6, Pz, P3, P4, O1, O2 영역에서 유의한 감소가 있었다. 반면 β2 파는 F3, F4, F7, F8, T4, O1, O2 영역에서 유의한 증가가 있었다. 결과적으로 θ1 파와 θ2 파는 인지활동 중에 증가하고, α1 파와 α2 파는 감소하며, β2 파는 증가하여 일반 정상인에게서 볼 수 있는 뇌파의 변화 양상과 일치하였다.
폐안시 정상여성노인과 치매여성노인의 전두엽과 두정엽에 나타나는 뇌파의 정량적 분석
한동욱,하미숙 한국자료분석학회 2008 Journal of the Korean Data Analysis Society Vol.10 No.6
The aim of this study was to find out the difference of quantitative EEG power and coherence between normal elderly women and demented elderly women with closed their eyes. Thirty two elderly women(15 normal elderly, 17 demented elderly) were participated in this study. EEG power and coherence was computed over 21 channels; right and left frontal, central, parietal, temporal and occipital areas. The activity of alpha1 and alpha2 waves was more higher than others significantly at frontal and parietal areas in normal elderly women, but the activity of theta1, theta2 and alpha1 waves was higher in demented elderly women. And the activity of theta1 and theta2 waves in demented elderly women was more higher than normal elderly women significantly. In conclusion, we discovered that quantitative EEG power and coherence was used to diagnose dementia. 이 연구의 목적은 눈을 감은 상태에서 정상여성노인과 치매여성노인에서 나타나는 뇌파의 차이를 정량적인 방법으로 알아보기 위한 것이다. 연구대상자는 부산지역의 노인요양원 3곳과 부여군의 농촌지역 한 곳에 거주하는 여성으로 자발적으로 이 연구에 참여하기로 동의한 32명의 여성노인(정상여성노인 15명, 치매여성노인 17명)이었다. 뇌파 측정은 국제적으로 공인된 10 - 20 방법으로 21개의 전극을 오른쪽과 왼쪽의 전두엽, 중심부, 두정엽, 측두엽과 후두엽에 부착하여 측정하였다. 측정결과 정상여성노인은 alpha1, alpha2 파형이 다른 파형에 비해 활성도가 높았으며, 치매여성노인은 theta1, theta2, alpha1 파형의 활성도가 높았다. 또한 치매여성노인이 정상여성노인에 비해 theta1, theta2 파형의 활성도가 높았다. 결과적으로 주파수 대역을 이용한 정량적인 뇌파분석이 치매진단에 유용함을 알 수 있었다.
요통 환자의 일반적인 특성이 요통의 심리적 측면에 미치는 영향
한동욱,박지환,김용건,Han Dong-Wook,Park Ji-Whan,Kim Yong-Gun 대한물리치료학회 2002 대한물리치료학회지 Vol.14 No.3
The purpose of this study was to examine the influence of general characteristic of the patient with low back pain on the psychologic Status. The Questionnaires was done for 312 persons with low back pain who live in Daejeon. The study was conducted between 1st, June and 26th, July in 2000. The results were as follows: 1. The effects of general characteristic of the patient with low back pain on the psychologic Status were related age(p<0.01), education level(p<0.01), job(p<0.01), husband and wife existence(p<0.01), disease(p<0.01). 2. The influence of an item on Handler score was related the reason of pain(r=0.377, p<0.01), the site and pattern of pain(r=0.314, p<0.01), the influence of climate(r=0.370, p<0.01), the frequency of pain(r=0.396, p<0.01), the position of producible pain(r=0.411, p<0.01), one's desire(r=0.394, p<0.01), experience of pessimism(r=0.421, p<0.01).
한동욱,박상규,양동우,이은주 한국통합생물학회 2012 Animal cells and systems Vol.16 No.2
We investigated food webs of a Salix subfragilis-dominated wetland in the Janghang wetland in the Hangang estuary,which is very close to the Demilitarized Zone, along the west coast of Korea. Our study focused on understanding sesarmine crab (Sesarma dehaani)-related food webs in a S. subfragilis forest. For our study, we used carbon and nitrogen stable isotopes and fatty acid biomarkers. We collected samples of plants, animals, and detrital sediment from four quadrats (55 m2) set in the S. subfragilis community. Samples were collected from September 2006 to June 2009, except during the winter hibernation period of S. dehaani. In the wet season, the sediment showed relatively high d13C and low d15N signatures compared with relatively low d13C and high d15N signatures in the dry season. Mature S. dehaani appeared to feed on fresh leaves and other carbon sources, such as immature individuals or fish, in addition to detrital sediment, which appeared to be the main carbon source for immature crabs. Principal component analysis of fatty acid biomarkers of S. dehaani showed a clear difference between immature individuals (1030 mm) and mature ones (larger than 30 mm), indicating that the main food source for immature crabs was detrital sediment, whereas mature crabs foraged plants in addition to consuming detrital sediment. On the basis of our results from stable isotope and fatty acid analyses, mature S. dehaani appeared to feed on detrital sediment and fresh leaves of S. subfragilis in summer in addition to engaging in cannibalism of immature individuals.