نتایج جستجو برای: electroencephalographic signal

تعداد نتایج: 422284  

Journal: :middle east journal of rehabilitation and health studies 0
seyyedeh hoorya hosseini department of speech therapy, school of rehabilitation, tehran university of medical sciences, tehran, ir iran ahmad reza khatoonabadi department of speech therapy, school of rehabilitation, tehran university of medical sciences, tehran, ir iran; department of speech therapy, school of rehabilitation, tehran university of medical sciences, tehran, ir iran. tel: +98-9133133761 hooshang dadgar department of speech therapy, school of rehabilitation, tehran university of medical sciences, tehran, ir iran mahsa saadati statistical center of iran, national population studies and comprehensive management institute, tehran, ir iran gholam ali hossein zade department of electrical engineering school of ece, college of engineering, university of tehran, ir iran

background naming is a simple and basic skill of the language which involves semantic, lexical, and phonological levels. there are many different factors affecting the speed and convenience of naming. one of these factors is the word age of acquisition (aoa) and since language processing occurs at an extremely fast rate, psycholinguistics needs a method that has very good temporal resolution. t...

Journal: :Green Intelligent Systems and Applications 2022

Electroencephalographic data signals consist of electrical signal activity with several characteristics, such as non-periodic patterns and small voltage amplitudes that can mix noise making it difficult to recognize. This study uses types EEG wave signals, namely Delta, Alpha, Beta, Gamma. The method we use in this is the application an impulse response filter replace obtained before after FIR ...

2015
Filippo Zappasodi Laura Marzetti Elzbieta Olejarczyk Franca Tecchio Vittorio Pizzella Francisco J. Esteban

The study of active and healthy aging is a primary focus for social and neuroscientific communities. Here, we move a step forward in assessing electrophysiological neuronal activity changes in the brain with healthy aging. To this end, electroencephalographic (EEG) resting state activity was acquired in 40 healthy subjects (age 16-85). We evaluated Fractal Dimension (FD) according to the Higuch...

Journal: :Anesthesiology 2002
Jörgen Bruhn Thomas W Bouillon Andreas Hoeft Steven L Shafer

BACKGROUND Artifact robustness (i.e., size of deviation of an electroencephalographic parameter value from baseline caused by artifacts) and baseline stability (i.e., consistency of median baseline values) of electroencephalographic parameters profoundly influence electroencephalography-based pharmacodynamic parameter estimation and the usefulness of the processed electroencephalogram as measur...

Journal: :Anesthesiology 2002
Satoshi Hagihira Masaki Takashina Takahiko Mori Takashi Mashimo Ikuto Yoshiya

BACKGROUND The authors previously reported that, during isoflurane anesthesia, electroencephalographic bicoherence values changed in a fairly restricted region of frequency versus frequency space. The aim of the current study was to clarify the relation between electroencephalographic bicoherence and the isoflurane concentration. METHODS Thirty elective abdominal surgery patients (male and fe...

Journal: :Anesthesiology 2006
Gyu-Jeong Noh Kye-Min Kim Yong-Bo Jeong Seong-Wook Jeong Hee-Suk Yoon Sung-Moon Jeong Sung-Hong Kang Olinto Linares Steven E Kern

BACKGROUND The aim of this study was to investigate the independent effect of remifentanil on the approximate entropy (ApEn) in frontoparietal montages. The authors investigated which montages were relevant to assess the remifentanil effect on the electroencephalogram. Spectral edge frequency and the canonical univariate parameter were used as comparators. METHODS Twenty-eight healthy volunte...

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