Results 21 to 30 of about 300,325 (331)
Sensors, 2023 Background: Portable electroencephalogram (EEG) systems are often used in health care applications to record brain signals because their ease of use. An electrooculogram (EOG) is a common, low frequency, high amplitude artifact of the eye blink signal ...
Jammisetty Yedukondalu +1 more
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A real-time artifact reduction algorithm based on precise threshold during short-separation optical probe insertion in neurosurgery [PDF]
Journal of Innovative Optical Health Sciences, 2017 During neurosurgery, an optical probe has been used to guide the micro-electrode, which is punctured into the globus pallidus (GP) to create a lesion that can relieve the cardinal symptoms.
Weitao Li +4 more
doaj +1 more source
EEG-fMRI: Ballistocardiogram Artifact Reduction by Surrogate Method for Improved Source Localization
Frontiers in Neuroscience, 2022 For the analysis of simultaneous EEG-fMRI recordings, it is vital to use effective artifact removal tools. This applies in particular to the ballistocardiogram (BCG) artifact which is difficult to remove without distorting signals of interest related to ...
Mateusz Rusiniak +6 more
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Testing the Relationship between Income Inequality and Life Expectancy in Selected Countries with Neutralizing Statistical Artifact [PDF]
فصلنامه پژوهشهای اقتصادی ایران, 2016 There have been many conflicting studies on income inequality and life expectancy in the past four decades. It seems that many of these studies are affected by a statistical artifact which could lead to measurement error.
Abolghasem Mahdavi Mazdeh +2 more
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Data in Brief, 2021 The printed features on an additive manufactured part will often deviate from the nominal values of the 3D model's features due to the factors such as printer resolution, printing parameters, printing technology, and the measurement method.
Gary Mac +3 more
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Impact of image quality on OCT angiography based quantitative measurements
International Journal of Retina and Vitreous, 2017 Background To study the impact of image quality on quantitative measurements and the frequency of segmentation error with optical coherence tomography angiography (OCTA). Methods Seventeen eyes of 10 healthy individuals were included in this study.
Mayss Al-Sheikh +3 more
doaj +1 more source
An Unusual ECG Artifact Caused by Faulty Cardiac Monitor Leads
Clinical Practice and Cases in Emergency Medicine, 2021 Case Presentation: We present the case of a 74-year-old female patient who presented to the emergency department with lower extremity weakness found to have a fixed frequency square wave artifact in all leads of her electrocardiogram (ECG).
Bryan Imhoff, Wesley Casey
doaj +1 more source
A Novel Method for the Measurement of Geometric Errors in the Linear Motion of CNC Machine Tools
Applied Sciences, 2019 In order to improve the accuracy of the linear motion of computer numerical control (CNC) machine tools, a novel method based on a new type of 1-D (1-dimensional) artifact is proposed to measure the geometric errors.
Xuan Wei +7 more
doaj +1 more source
On the effects of (partial) quenching on penguin contributions to K-> pi pi [PDF]
, 2003 Recently, we pointed out that chiral transformation properties of strong penguin operators change in the transition from unquenched to (partially) quenched QCD. As a consequence, new penguin-like operators appear in the (partially) quenched theory, along
A. Morel +20 more
core +5 more sources
Boundary artifact due to truncation errors in MR imaging [PDF]
American Journal of Roentgenology, 1986 A boundary artifact in MR images due to truncation of the infinite Fourier series necessary to encode tissue discontinuities was investigated by using doped water phantoms and normal volunteers. All images were obtained on 0.3-T permanent and 0.6-T superconducting MR imagers with varying phase and frequency sampling rates. The artifact appeared in both
R B, Lufkin +5 more
openaire +2 more sources