نتایج جستجو برای: brain signal

تعداد نتایج: 865859  

Journal: :Jurnal Sistem Informasi dan Komputer 2022

The number of people with disabilities is increasing, so it requires bionic devices to replace human motor functions. Brain-Computer Interface (BCI) can be a tool for the device communicate brain. Signal brain or Electroencephalogram (EEG) signal need classify drive corresponding device. This research goal imagination right and left-hand movements based on EEG signal. system design in this cons...

ژورنال: بیهوشی و درد 2018

 Aims and background: Poincare plot and its length and width are known as a criterion for short-term variations of electroencephalogram signals )EEGs(. This study evaluates the effect of time delay on changes in the width of the Poincare plot in brain signal during different anesthesia states. Materials and Methods: Poincare plots are drawn with one to six delay in three sets, including awake s...

Journal: :acta physiologica hungarica 2014
w szaroma k dziubek e kapusta

one of the major classes of ionotropic glutamate receptors is the class of n-methyl-d-aspartate receptors (nmdars). receptor activation recruits, via calcium signal transduction mechanisms which play important roles in oxidative metabolism, mitochondrial free radical production and occurrence of other mitochondrial factors which potentially contribute to excitotoxicity and neuronal death. in...

Journal: :iranian journal of radiology 0
sohaila yazdani kermanshah university of medical sciences, kermanshah, iran; kermanshah university of medical sciences, kermanshah, iran karim khoshgard kermanshah university of medical sciences, kermanshah, iran hasan norouzi kermanshah university of medical sciences, kermanshah, iran

conclusions both task-related and resting fmri techniques have the potential to detect early brain dysfunction related to ad. however, the use of fmri in ad populations thus far has been limited to a relatively small number of research groups. results bold fmri is considered to reflect the joined synaptic activity of neurons through mri signal changes because of alterations in blood flow, blood...

Introduction: Ensuring an adequate Depth of Anesthesia (DOA) during surgery is essential for anesthesiologists. Since the effect of anesthetic drugs is on the central nervous system, brain signals such as Electroencephalogram (EEG) can be used for DOA estimation. Anesthesia can interfere among brain regions, so the relationship among different areas can be a key factor in the anesthetic process...

The right and left hand Motor Imagery (MI) analysis based on the electroencephalogram (EEG) signal can directly link the central nervous system to a computer or a device. This study aims to identify a set of robust and nonlinear effective brain connectivity features quantified by transfer entropy (TE) to characterize the relationship between brain regions from EEG signals and create a hierarchi...

Journal: :caspian journal of neurological sciences 0
arash shabani fariborz faeghi medical physics, assistant professor of medical imaging, department of radiology technology, faculty of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran ; [email protected] ayoob rostamzadeh jalal jalal-shokouhi

background: early diagnosis of brain tumors has significant effect on the treatment process. brain metastatic tumors are usually diagnosed following the neurological symptoms in patients or incidentally after computerized tomography (ct) scan and magnetic resonance imaging (mri) requests of the brain. objectives: implementation of a new method for being informed about the origin of brain tumors...

جلال, راضیه, درویش علی پور, شمیلا, سپهری, حوری, عادلی, خسرو, پروانه تفرشی, آزیتا,

Abstract Introduction: There is limited knowledge available on the metabolism of glucose in the brain, an insulin insensitive organ. Insulin receptors hybridize with insulin like growth factor receptor (IGF-I) to transduce the signals in different areas of the brain. In this article we aimed at investigating whether the expression of IGF-I receptor and IGF-I binding proteins (IGFBP1) is change...

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