نتایج جستجو برای: eegmeg تحلیل مؤلفههای مستقل ica

تعداد نتایج: 260832  

Journal: :Annals of vascular surgery 2005
Reza Mofidi Thomas I Powell Anthony Brabazon Denis Mehigan Stephen J Sheehan Donal P MacErlaine Thomas V Keaveny

Duplex ultrasound criteria use a combination of velocity measurements to evaluate internal carotid artery (ICA) stenosis. These evaluations divide ICA stenosis into broad categories. The aim of this study was to design an artificial neural network (ANN) capable of predicting the exact degree of ICA stenosis based on duplex velocity measurements. Consecutive patients with significant carotid ath...

Journal: :journal of tethys 0

contamination of water by heavy metals is a global problem. nowadays everybody knows that heavy metal ions consist of iron, lead, manganese, zinc, copper, cadmium, and nickel and so on they are common contaminants in wastewater and known to be toxic and carcinogenic that lead to many problems for human and water environment. in this research, experiments have been performed in the batch system ...

Journal: :Magnetic resonance in medicine 2013
Jeong-Won Jeong Eishi Asano Fang-Cheng Yeh Diane C Chugani Harry T Chugani

The independent component analysis (ICA) tractography method has improved the ability to isolate intravoxel crossing fibers; however, the accuracy of ICA is limited in cases with voxels in local clusters lacking sufficient numbers of fibers with the same orientations. To overcome this limitation, the ICA was combined with a ball-stick model (BSM) ["ICA+BSM"]. An ICA approach is applied to ident...

ژورنال: :مجله دانشگاه علوم پزشکی اراک 0
احسان ایمانی ehsan imani depatrment of tehecommunications, malek- ashtar industrial university, tehran, iran.گروه مخابرات، دانشگاه صنعتی مالک اشتر، تهران، ایران علی پورمحمد ali pourmohammad (a term faculty) lecturer at the electrical engineering department, amirkabir university of technology, tehran, iran.دانشکده مهندسی برق دانشگاه صنعتی امیرکبیر، تهران، ایرانسازمان اصلی تایید شده: دانشگاه صنعتی مالک اشتر (malek ashtar university of technology)

زمینه و هدف: در پژوهش های گوناگون از الگوریتم آنالیز اجزاء مستقل (ica) جهت تشخیص و حذف آرتیفکت های چشمی استفاده شده است. اما در این پژوهش، به منظور نوآوری، از الگوریتم ica هم زمان جهت آشکار سازی آرتیفکت چشم و نیز آشکارسازی سیگنال های مغزی دوگروه مفهومی کلمات خطر و اطلاع رسانی استفاده شد.   مواد و روش ها: در این مطالعه توصیفی - تحلیلی، ثبت سیگنال ها به کمک دستگاه میکرومد و کلاه 19 کاناله به صورت...

Journal: :Human brain mapping 2001
V D Calhoun T Adali G D Pearlson J J Pekar

Independent component analysis (ICA) is a technique that attempts to separate data into maximally independent groups. Achieving maximal independence in space or time yields two varieties of ICA meaningful for functional MRI (fMRI) applications: spatial ICA (SICA) and temporal ICA (TICA). SICA has so far dominated the application of ICA to fMRI. The objective of these experiments was to study IC...

Journal: :Journal of Vascular Surgery 2023

Modified eversion carotid endarterectomy (meCEA) is an alternative to classical patch angioplasty or eversion. An meCEA involves everting the plaque through a longitudinal incision over common artery without transecting internal (ICA). Those who advocate cite propensity of luminal narrowing from procedure restenosis as reason avoid primary repair. We seek objectively quantify outcome after repa...

2003
Önsen TOYGAR Adnan ACAN

In this paper, the performances of appearance-based statistical methods such as Principal Component Analysis (PCA), Linear Discriminant Analysis (LDA) and Independent Component Analysis (ICA) are tested and compared for the recognition of colored face images. Three sets of experiments are conducted for relative performance evaluations. In the first set of experiments, the recognition performanc...

2009
L. Albera A. Kachenoura A. Karfoul P. Comon L. Senhadji

This communication aims at giving some insights into the use of Independent Component Analysis (ICA) for solving biomedical problems. First the concept of ICA is reviewed and different classes of ICA methods are described. Next a survey on most encountered biomedical problems solved using ICA is detailed. Finally a comparative performance study of thirteen ICA algorithms is performed on biomedical

Journal: :Neurologia medico-chirurgica 2010
Toru Masuoka Nakamasa Hayashi Emiko Hori Naoya Kuwayama Osamu Ohtani Shunro Endo

The intracranial internal carotid artery (ICA) is a muscular artery and lacks external elastic lamina (EEL). Stenosis of the intracranial ICA is relatively uncommon, but the most common site is the cavernous portion. The characteristics of the arterial wall structures were examined using serial 3-mm sections of 32 intracranial ICAs obtained from 50 cadavers to identify where the EEL disappeared...

Journal: :NeuroImage 2014
Yaqub Jonmohamadi Govinda R. Poudel Carrie R. H. Innes Richard D. Jones

We propose source-space independent component analysis (ICA) for separation, tomography, and time-course reconstruction of EEG and MEG source signals. Source-space ICA is based on the application of singular value decomposition and ICA on the neuroelectrical signals from all brain voxels obtained post minimum-variance beamforming of sensor-space EEG or MEG. We describe the theoretical backgroun...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید