• Title, Summary, Keyword: EEG(Electroencephalography)

Search Result 197, Processing Time 0.032 seconds

Electroencephalography Information System using ASTM: E1467 protocol (ASTM: E1467 프로토콜을 사용한 Electroencephalography Information System)

  • Park, J.H.;Kim, Y.S.;Min, J.H.;Park, S.H.
    • Proceedings of the KOSOMBE Conference
    • /
    • v.1998 no.11
    • /
    • pp.251-252
    • /
    • 1998
  • Most of Electroencephalography(EEG) systems currently being used in hospitals don't support a standardized communication protocol for the exchange of orders, data and results. ASTM: E1467 protocol was proposed to expedite the EEG data exchange between different EEG systems and eventually between hospitals. In this paper, we present an Electroencephalography Information System using ASTM: E1467 protocol, with which patient registration, orders, interpretation, and review can be performed electronically. The system is designed using a component-based methodology. Most of the components are written in Visual C++ and Visual Basic. JAVA is also used to implement some components.

  • PDF

Protocol Based Real-Time Continuous Electroencephalography for Detecting Vasospasm in Subarachnoid Hemorrhage

  • Hong, Jeong-Ho;Bang, Jae Seung;Chung, Jin-Heon;Han, Moon-Ku
    • Journal of Korean Neurosurgical Society
    • /
    • v.59 no.2
    • /
    • pp.154-157
    • /
    • 2016
  • A continuous electroencephalography (cEEG) can be helpful in detecting vasospasm and delayed cerebral ischemia in aneurysmal subarachnoid hemorrhage (SAH). We describe a patient with an aneurysmal SAH whose symptomatic vasospasm was detected promptly by using a real-time cEEG. Patient was immediately treated by intraarterial vasodilator therapy. A 50-year-old woman without any significant medical history presented with a severe bifrontal headache due to acute SAH with a ruptured aneurysm on the anterior communicating artery (Fisher grade 3). On bleed day 6, she developed a sudden onset of global aphasia and left hemiparesis preceded by cEEG changes consistent with vasospasm. A stat chemical dilator therapy was performed and she recovered without significant neurological deficits. A real-time and protocol-based cEEG can be utilized in order to avoid any delay in detection of vasospasm in aneurysmal SAH and thereby improve clinical outcomes.

Brain-wave Analysis using fMRI, TRS and EEG for Human Emotion Recognition (fMRI와 TRS와 EEG를 이용한 뇌파분석을 통한 사람의 감정인식)

  • Kim, Ho-Duck;Sim, Kwee-Bo
    • Journal of Korean Institute of Intelligent Systems
    • /
    • v.17 no.6
    • /
    • pp.832-837
    • /
    • 2007
  • Many researchers are studying brain activity to using functional Magnetic Resonance Imaging (fMRI), Time Resolved Spectroscopy(TRS), Electroencephalography(EEG), and etc. They are used detection of seizures or epilepsy and deception detection in the main. In this paper, we focus on emotion recognition by recording brain waves. We specially use fMRI, TRS, and EEG for measuring brain activity Researchers are experimenting brain waves to get only a measuring apparatus or to use both fMRI and EEG. This paper is measured that we take images of fMRI and TRS about brain activity as human emotions and then we take data of EEG signals. Especially, we focus on EEG signals analysis. We analyze not only original features in brain waves but also transferred features to classify into five sections as frequency. And we eliminate low frequency from 0.2 to 4Hz for EEG artifacts elimination.

Usefulness of Quantified-EEG in Dementia (치매에서 정량적 뇌파검사의 유용성)

  • Han, Dong-Wook;Seo, Byoung-Do;Son, Young-Min
    • Journal of Korean Physical Therapy Science
    • /
    • v.15 no.3
    • /
    • pp.9-17
    • /
    • 2008
  • Background : The conventional electroencephalography(EEG) is commonly used as aid in the diagnosis of dementia. Recently developed quantitative electroencephalography(qEEG) provides data that are not achievable by conventional EEG. The aim of this study was to find out the usefulness of quantified-EEG in dementia. Method : Twenty elderly women(10 normal elderly, 10 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. Result : The activity of ${\alpha}$ wave was more higher than others significantly at frontal and parietal areas in normal elderly, but the activity of ${\theta}$ wave was higher in demented elderly. And the activity of ${\theta}$ wave in demented elderly women was more higher than normal elderly women significantly. Conclusion : In conclusion, we discovered that quantitative EEG was used to diagnose dementia.

  • PDF

Brain-wave Analysis using fMRI, TRS and EEG for Human Emotion Recognition (fMRI와 TRS와 EEG 를 이용한 뇌파분석을 통한 사람의 감정 인식)

  • Kim, Ho-Duck;Sim, Kwee-Bo
    • Proceedings of the Korean Institute of Intelligent Systems Conference
    • /
    • /
    • pp.7-10
    • /
    • 2007
  • 많은 과학자들은 인간의 사고를 functional Magnetic Resonance Imaging (fMRI), Time Resolved Spectroscopy(TRS), Electroencephalography(EEG)등을 이용해서 두뇌 활동 영역을 연구하고 있다. 주로 의학 분야와 심리학의 영역에서 두뇌의 활동을 연구하여 간질이나 발작을 알아내고 거짓말 탐지 분야에서도 사용된다. 본 논문에서는 사람의 두뇌활동을 측정하여 인간의 감정을 인식하는 연구에 중점을 두었다. 특히 fMRI와 TRS 그리고 EEG를 이용해서 사람의 두뇌활동을 측정하는 연구를 하였다. 많은 연구자들이 한 가지 측정 장치만을 사용하여서 측정하거나 fMRI와 EEG를 동시에 측정하는 연구를 진행하고 있다. 현재에는 단순히 두뇌의 활동을 측정하거나 측정시 발생하는 잡음들을 제거하는 연구들에 중점을 두고 진행되고 있다. 본 연구에서는 fMRI와 TRS를 동시에 측정하여 얻은 두뇌 활동 데이터를 가지고 감정에 따른 활동영역의 EEG신호를 측정하였다. EEG 신호분석에 있어서 기존의 뇌파만을 가지고 특정을 찾아내는 것을 넘어서 각각의 채널에서 기록되는 뇌파의 파형을 주파수에 따라서 분류하고 정확한 측정을 위해 낮은 주파수를 제거하고 연구자가 필요한 부분의 뇌파를 분석하였다.

  • PDF

Electroencephalography for Occupational Therapy for Stroke Patients: A Literature Review (뇌졸중 환자의 작업치료 중재 결과를 측정하기 위해 사용된 뇌전도(Electroencephalography)에 대한 문헌 고찰)

  • Kwak, Ho-Soung;Park, Ji-Hyuk
    • Therapeutic Science for Rehabilitation
    • /
    • v.7 no.2
    • /
    • pp.9-16
    • /
    • 2018
  • Objective : The aim of this research was to provide EEG (electroencephalogram) basic data in clinical areas through identifying measurement tools, measurement methods, and evaluation and analysis method of the EEG which is a neurological change measurement of patients with brain injury. Methods : Previous studies were found in an electronic database (e.g., PubMed, Science Direct). The keyword search terms were 'Electroencephalography', 'stroke', 'intervention OR training'. Results : Utilitizing brain-computer interface, the EEG, which is a tool for measuring the effects of rehabilitation through changes of brain activation state. Also, it could identify functional brain reorganization mechanism. Whenever a research utilized the EEG, which is composed of various channels, different types of electrode, and varied electrode locations. Conclusions : Through this review, we found that Electroencephalography is possible to neurologically verify the effectiveness of intervention and formulate an intervention strategy for efficient occupational therapy.

A Study on the Real-time Electroencephalography analysis (실시간 뇌파분석에 관한 연구)

  • Song, J.S.;Yoo, S.K.;Kim, S.H.;Kim, N.H.;Kim, K.M.;Lee, M.H.
    • Proceedings of the KOSOMBE Conference
    • /
    • v.1995 no.11
    • /
    • pp.278-281
    • /
    • 1995
  • In this paper, we have developed EEG (electroencephalography) analyzer for monitoring the condition of brain in neurological surgery. This system is composed of EEG amplifier. personal-computer and BSP (Digital Signal Processor). By parallel processing of DSP, this system can analysis the power spectral density change of EEG in real-time and display the CSA(Compressed Spectral Array) and CDSA(Color Density Spectral array) of EEG. This system was tested by real EEG and showed the change of EEG.

  • PDF

Fundamental requirements for performing electroencephalography

  • Koo, Dae Lim;Kim, Won-Joo;Lee, Sang-Ahm;Kim, Jae Moon;Kim, Juhan;Park, Soochul;Korean Society of Clinical Neurophysiology Education Committee
    • Annals of Clinical Neurophysiology
    • /
    • v.19 no.2
    • /
    • pp.113-117
    • /
    • 2017
  • The performance of electroencephalogram (EEG) recordings is affected by electrode type, electronic parameters such as filtering, amplification, signal conversion, data storage; and environmental conditions. However, no single method has been identified for optimal EEG recording quality in all situations. Therefore, we aimed to provide general principles for EEG electrode selection as well as electronic noise reduction, and to present comprehensive information regarding the acquisition of satisfactory EEG signals. The standards provided in this document may be regarded as Korean guidelines for the clinical recording of EEG data. The equipment, types and nomenclature of electrodes, and the details for EEG recording are discussed.

An EEG Encryption Scheme for Authentication System based on Brain Wave (뇌파 기반의 인증시스템을 위한 EEG 암호화 기법)

  • Kim, Jung-Sook;Chung, Jang-Young
    • Journal of Korea Multimedia Society
    • /
    • v.18 no.3
    • /
    • pp.330-338
    • /
    • 2015
  • Gradually increasing the value of the technology, the techniques of the various security systems to protect the core technology have been developed. The proposed security scheme, which uses both a Password and the various devices, is always open by malicious user. In order to solve that problem, the biometric authentication systems are introduced but they have a problem which is the secondary damage to the user. So, the authentication methods using EEG(Electroencephalography) signals were developed. However, the size of EEG signals is big and it cause a lot of problems for the real-time authentication. And the encryption method is necessary. In this paper, we proposed an efficient real-time authentication system applied encryption scheme with junk data using chaos map on the EEG signals.

Early postictal electroencephalography and correlation with clinical findings in children with febrile seizures

  • Jeong, Kyung A;Han, Myung Hee;Lee, Eun Hye;Chung, Sajun
    • Clinical and Experimental Pediatrics
    • /
    • v.56 no.12
    • /
    • pp.534-539
    • /
    • 2013
  • Purpose: Electroencephalography (EEG) is frequently ordered for patients with febrile seizures despite its unclear diagnostic value. We evaluated the prevalence of abnormal EEGs, the association between clinical findings and abnormal EEGs, and the predictive value of EEG for the recurrence of febrile seizures Methods: Data were collected on 230 children who were treated for febrile seizures at Kyung Hee University Medical Center from 2005 to 2009. EEGs were recorded after 1-2 days of hospitalization when children became afebrile. EEG patterns were categorized as normal, epileptiform, or nonspecific relative to abnormalities. The patients' medical records were reviewed, and telephone interviews with the families of the children were conducted to inquire about seizure recurrence. The relationships between clinical variables, including seizure recurrence, and EEG abnormalities were evaluated. Results: Of the 131 children included, 103 had simple and 28 had complex febrile seizures. EEG abnormalities were found in 41 children (31%). EEG abnormalities were more common in children with complex than simple febrile seizures (43% vs. 28%), but the difference was not statistically significant. Logistical regression analysis showed that having multiple seizures in a 24-hour period was significantly predictive of abnormal EEG (odds ratio, 2.98; 95% confidence interval, 1.0 to 88; P =0.048). The frequency of recurrence did not differ significantly in the normal (31%) and abnormal (23%) EEG groups. Conclusion: Multiple seizures within 24 hours were predictive of abnormal EEG in children with febrile seizures. Abnormal EEG was not predictive of febrile seizure recurrence.