نتایج جستجو برای: eeg spectral features

تعداد نتایج: 700898  

Journal: :Canadian Journal of Neurological Sciences 2022

Background: In Canada, 7% of children are born preterm between 29 and 36 weeks gestational age (GA). Electroencephalography (EEG) provides a bedside evaluation brain activity, yet the clinical significance several EEG patterns requires further study. The goal this study is to determine features at term equivalent (TEA) that correlate with neurodevelopmental TEA in infants 29-36 GA. Methods: Pro...

2015
Young-Seok Choi

We presents a refined multiscale Shannon entropy for analyzing electroencephalogram (EEG), which reflects the underlying dynamics of EEG over multiple scales. The rationale behind this method is that neurological signals such as EEG possess distinct dynamics over different spectral modes. To deal with the nonlinear and nonstationary nature of EEG, the recently developed empirical mode decomposi...

2011
Chong Zhang Xiaolin Yu

The effects of long term mental arithmetic task on psychology are investigated by subjective self-reporting measures and action performance test. Based on electroencephalogram (EEG) and heart rate variability (HRV), the impacts of prolonged cognitive activity on central nervous system and autonomic nervous system are observed and analyzed. Wavelet packet parameters of EEG and power spectral ind...

Hori Sakai Tabuchi Umeno H Nishijo S Ono

A "Qi" feeling (a kind of comfortable sense) during and after acupuncture is one of the important determinants to decide quantity (trial number) of acupuncture stimulation. It has been reported that various autonomic responses were evoked when patients felt "Qi" and when acupuncture stimulation had significant effects on EEGs. However, quantitative relationships among acupuncture stimulation, E...

Hori Sakai Tabuchi Umeno H Nishijo S Ono

A "Qi" feeling (a kind of comfortable sense) during and after acupuncture is one of the important determinants to decide quantity (trial number) of acupuncture stimulation. It has been reported that various autonomic responses were evoked when patients felt "Qi" and when acupuncture stimulation had significant effects on EEGs. However, quantitative relationships among acupuncture stimulation, E...

2015
Irene Sturm Sven Dähne Benjamin Blankertz Gabriel Curio Lutz Jaencke

Note onsets in music are acoustic landmarks providing auditory cues that underlie the perception of more complex phenomena such as beat, rhythm, and meter. For naturalistic ongoing sounds a detailed view on the neural representation of onset structure is hard to obtain, since, typically, stimulus-related EEG signatures are derived by averaging a high number of identical stimulus presentations. ...

Journal: یافته 2004
fariba Hooshmand , hojatollah Alaie , mehr afarin Fesharaki ,

Introduction: Lead intoxication in children has been associated with neurodevelopment disabilities that may result in motor and cognitive impairment. The aim of the present study is to evaluate in long term effects of prenatal exposure to low-level Pb2+ on learning, memory and EEG. Materials & Methods: Rat pregnant were exposed to distilled water or 0.05, 0.1, 0.2 % of Pb-acetate in the dr...

Journal: :Clinical EEG and neuroscience 2018
Damien Lesenfants Dina Habbal Camille Chatelle Andrea Soddu Steven Laureys Quentin Noirhomme

Electroencephalography (EEG) has been proposed as a supplemental tool for reducing clinical misdiagnosis in severely brain-injured populations helping to distinguish conscious from unconscious patients. We studied the use of spectral entropy as a measure of focal attention in order to develop a motor-independent, portable, and objective diagnostic tool for patients with locked-in syndrome (LIS)...

Journal: :Acta IMEKO 2021

Multidomain comfort theories have been demonstrated to interpret human thermal in buildings by employing human-centered physiological measurements coupled with environmental sensing techniques. Thermal has correlated brain activity through electroencephalographic (EEG) measurements. However, the application of low-cost wearable EEG sensors for measuring not thoroughly investigated. Wearable dev...

In this paper, with due respect to the original data and based on the extraction of new features by smaller dimensions, a new feature reduction technique is proposed for Hyper-Spectral data classification. For each pixel of a Hyper-Spectral image, a specific rational function approximation is developed to fit its own spectral response curve (SRC) and the coefficients of the numerator and denomi...

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