نتایج جستجو برای: hemodynamic response function hrf
تعداد نتایج: 2085796 فیلتر نتایج به سال:
The blood oxygen level dependent (BOLD) signal, as measured using functional magnetic resonance imaging (fMRI), is widely used as a proxy for changes in neural activity in the brain. Physiological variables such as heart rate (HR) and respiratory variation (RV) affect the BOLD signal in a way that may interfere with the estimation and detection of true task-related neural activity. This interfe...
Experimental designs for functional magnetic resonance imaging (fMRI) experiments can be characterized by their estimation efficiency, which is a measure of the variance in the estimate of the hemodynamic response function (HRF), and their detection power, which is a measure of the variance in the estimate of the amplitude of functional activity. Previous studies have shown that there exists a ...
This study examined student health-related fitness (HRF) knowledge and its relationship to physical activity (PA). The participants were undergraduate students from a large U.S. state university. HRF knowledge was assessed using a test consisting of 150 multiple choice items. Differences in HRF knowledge scores by sex, ethnicity, and years in university were examined by ANOVA. The mean HRF know...
Modeling environmental data plays a crucial role in explaining phenomena. In some cases, well-known distributions, e.g., Weibull, inverse and Gumbel cannot model events adequately. Therefore, many authors tried to find new statistical distributions represent phenomena more accurately. this paper, an α-monotone generalized log-Moyal (α-GlogM) distribution is introduced properties such as cumulat...
OBJECTIVE The objective of this study was to investigate whether previously reported early blood oxygen level dependent (BOLD) changes in epilepsy could occur as a result of the modelling techniques rather than physiological changes. METHODS EEG-fMRI data were analysed from seven patients with focal epilepsy, six control subjects undergoing a visual experiment, in addition to simulations. In ...
IgE-mediated activation of mast cells and basophils underlies allergic diseases such as asthma. Histamine-releasing factor (HRF; also known as translationally controlled tumor protein [TCTP] and fortilin) has been implicated in late-phase allergic reactions (LPRs) and chronic allergic inflammation, but its functions during asthma are not well understood. Here, we identified a subset of IgE and ...
Introduction: Horizontal root fracture (HRF) generally has a good prognosis of healing at fracture line after repositioning and flexible splinting. However, various factors such as delayed referral may unfavorably influence close reduction of firmly displaced coronal fragments and the long-term prognosis of healing at fracture line. Case 1: A 25-year-old woman with HRF in her maxillary central ...
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