نتایج جستجو برای: سیگنال bold

تعداد نتایج: 16895  

2013
Clare Reynell Julia J. Harris

BOLD (blood oxygen level dependent) fMRI (functional magnetic resonance imaging) is commonly used to study differences in neuronal activity between human populations. As the BOLD response is an indirect measure of neuronal activity, meaningful interpretation of differences in BOLD responses between groups relies upon a stable relationship existing between neuronal activity and the BOLD response...

Journal: :NeuroImage 2013
Fa-Hsuan Lin Thomas Witzel Tommi Raij Jyrki Ahveninen Kevin Wen-Kai Tsai Ying-Hua Chu Wei-Tang Chang Aapo Nummenmaa Jonathan R. Polimeni Wen-Jui Kuo Jen-Chuen Hsieh Bruce R. Rosen John W. Belliveau

Neuronal activation sequence information is essential for understanding brain functions. Extracting such timing information from blood oxygenation level dependent (BOLD) fMRI is confounded by interregional neurovascular differences and poorly understood relations between BOLD and electrophysiological response delays. Here, we recorded whole-head BOLD fMRI at 100 ms resolution and magnetoencepha...

Journal: :F1000Research 2022

Background: To date, coronavirus diseases 2019 (COVID-19) has no definitive treatment. Thrombosis and hypercoagulation may occur in the advanced stage. Further study on how to use anticoagulants is still required promote best prognosis. Methods: A cross-sectional of 110...

Journal: :HRB open research 2023

Background: Dementia research prioritisation allows for the systematic allocation of investment in dementia by governments, funding agencies and the private sector. There is currently a lack information available Ireland regarding priority areas research. To address this gap, a exercise was undertaken, co...

Journal: :F1000Research 2022

Aim: To determine the effectiveness of capacity building program on palliative care (PC) in enhancing primary health workers need assessment and symptom management cancer patients. Background: In India, less than one percent people living with have access to since most are from low- middle-income groups. Accre...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2011
Alexis T Baria Marwan N Baliki Todd Parrish A Vania Apkarian

Brain oscillatory activity has long been thought to have spatial properties, the details of which are unresolved. Here we examine spatial organizational rules for the human brain oscillatory activity as measured by blood oxygen level-dependent (BOLD) signal. Resting-state BOLD signal was transformed into frequency space (Welch's method) and averaged across subjects, and its spatial distribution...

Journal: :F1000Research 2023

Background: Rehabilitation services are necessary for people with disabilities to improve their quality of life and be included in society. This study aimed determine the factors associated use rehabilitation among Chile 2015. Methods: This cross-sectional analysis secondary data from Chile’s 2015 Second Nation...

Journal: :F1000Research 2022

Introduction: Gastric cancer is a disease with high rate of morbidity and mortality in the world. Objective: To determine which clinical inflammatory biomarkers are associated tumor stage gastric oncology service Hospital María Auxiliadora Lima, Peru, during years 2018-2020. Methodology: Observat...

Journal: :F1000Research 2023

Background: People living with HIV (PLHIV) are at an increased risk of human papillomavirus (HPV)-related head and neck cancers (HNCs). However, there is little data on the prevalence oral HPV among PLHIV in India, limiting planning preventive strategies. Methods: We used cross-sectional from cancer screening s...

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