نتایج جستجو برای: electroencephalographic signal

تعداد نتایج: 422284  

Journal: :Expert Systems 2009
Dean Cvetkovic Robert Powers Irena Cosic

The concept of linked oscillators in biological control systems has long been established. Frequency entrainment is a predominant explanation behind many biological rhythms. In this paper a preliminary examination of electroencephalographic entrainment is made to survey the possibility and methods of achieving signal entrainment at the highest level of neurological organization and function. A ...

Journal: :Journal of neuroscience methods 2014
Marina V Sysoeva Evgenia Sitnikova Ilya V Sysoev Boris P Bezruchko Gilles van Luijtelaar

BACKGROUND Advanced methods of signal analysis of the preictal and ictal activity dynamics characterizing absence epilepsy in humans with absences and in genetic animal models have revealed new and unknown electroencephalographic characteristics, that has led to new insights and theories. NEW METHOD Taking into account that some network associations can be considered as nonlinear, an adaptive...

2015
A. Sharmila

Brain–computer interface (BCI) aim at providing a non-muscular channel for sending commands to the external world using the electroencephalographic activity or other Electrophysiological measures of the brain function. An essential factor in the successful operation of BCI systems is the methods used to process the brain signals. In the BCI Literature, comprehensive survey of the signal process...

2011
Michelle Chong Romain Postoyan Dragan Nešić Levin Kuhlmann Andrea Varsavsky

Abstract: We present an estimator design to reconstruct the mean membrane potential of individual neuronal populations from a single channel simulated electroencephalographic signal based on a model of the hippocampus. The robustness of the estimator against variations in the synaptic gains of the neuronal populations and disturbances in the input and measurement is studied. Our results are fur...

Journal: :Materials Today Chemistry 2022

The paper describes the development of a reusable electrode system for non-invasive brain–computer interface application with signal quality comparable to that conventional wet Ag/AgCl electrodes. innovative consists polyvinyl alcohol–glycerol–NaCl contact hydrogel and 3D-printed, silver-coated polylactic acid body. Advantageous features proposed are comfortable use, reusability, long shelf lif...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده برق و کامپیوتر 1390

one of the most important goals for increasing recognition and treatment revenue is transmitting vital data to medical care team, more quickly. nowadays, use of new technologies for transmitting data will deploy more and more daily. in this article, for transmitting electrocardiogram, first we code the signal into a suite of codes, then we will use bluetooth technology to transmit data from off...

Journal: :Journal of Neuropathology and Experimental Neurology 1962

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی صنعتی کرمان - پژوهشکده برق و کامپیوتر 1390

a phase-locked loop (pll) based frequency synthesizer is an important circuit that is used in many applications, especially in communication systems such as ethernet receivers, disk drive read/write channels, digital mobile receivers, high-speed memory interfaces, system clock recovery and wireless communication system. other than requiring good signal purity such as low phase noise and low spu...

Journal: :Psychological science 2006
John Kounios Jennifer L Frymiare Edward M Bowden Jessica I Fleck Karuna Subramaniam Todd B Parrish Mark Jung-Beeman

Insight occurs when problem solutions arise suddenly and seem obviously correct, and is associated with an "Aha!" experience. Prior theorizing concerning preparation that facilitates insight focused on solvers' problem-specific knowledge. We hypothesized that a distinct type of mental preparation, manifested in a distinct brain state, would facilitate insight problem solving independently of pr...

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