Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 24 for “"resting state networks"”.
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Effects of HIV on longitudinal development of the fronto-striatal resting state networks in children from 7 to 11 years
… Using seed-based correlation analysis (SCA) of resting state functional magnetic resonance imaging (rs-fMRI), we conducted a longitudinal analysis to examine the effects of age and HIV on functional connectivity (FC) between the BG and the frontal cortex. Rs-fMRI data were collected at ages 7, 9 …
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Investigating neuromodulation with theta burst stimulation to primary visual cortex and subsequent effects on resting state networks: A multi-echo fMRI study
Theta burst stimulation (TBS) is a type of rTMS protocol which has the advantage of a shorter delivery time over traditional rTMS. When applied to motor cortex, intermittent TBS (iTBS) has been shown to yield excitatory aftereffects, whereas continuous TBS (cTBS) may lead to inhibitory …
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Reliability of resting brain networks using FMRI
Resting state FMRI studies on human subjects are primarily focused on elaborating effects of resting state brain networks on task induced paradigm and to check consistency of these networks between different groups of populations. Recent studies have shown consistency of RSFC networks within same …
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Potential benefits and neural correlates of acupuncture treatment with or without physiotherapy on resting state functional connectivity in ischemic stroke patients with unilateral limb dysfunction
… rehabilitation programs are yet to be defined. Resting-state functional magnetic resonance imaging (rs-fMRI) is a non-invasive technique used to map brain regions that are temporally correlated, indicative of functional connectivity, during periods of rest. In the present study, …
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Subject and group level changes and comparison in functional connectivity under low vs. high cognitively demanding naturalistic viewing conditions using fmri
Resting State fMRI is used extensively for analysing brain regions. fMRI is also used to determine task induced activations from cerebral networks. This study involves both rest and task activation data and implements statistical methods applied on Blood Oxygenation Level Dependent (BOLD) signals. …
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Investigating Cerebral Function in Neonates Using Diffuse Optical Tomography
… spontaneous cerebral activity that gives rise to resting state networks (RSNs) is becoming widely popular. These studies rely on infants to remain asleep to minimise subject motion and optimise data quality. Using DOT combined with electroencephalography (EEG), the effect of sleep state on RSNs …
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Functional Imaging the Neonatal Brain with Wearable Diffuse Optical Tomography
… connectivity (FC) associated with neonatal sleep states, active sleep and quiet sleep, in both term-born and preterm infants. HD-DOT is also electromechanically combined with electroencephalography (EEG) to concurrently study haemodynamic cortical and electrical cortical brain activity in the …
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Surface Based Decoding of Fusiform Face Area Reveals Relationship Between SNR and Accuracy in Support Vector Regression
… employed functional connectivity to predict ten resting state networks and six anatomically de fined structures from the outer 10 mm layer of cortex using resting state fMRI data. The novelty of this study was two-fold: we chose to predict the functionally de fined region fusiform face area …
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DTI-based tractographic analysis of white matter alterations in HIV infected children
… changes in white matter and functional networks in a cohort of 7-year-old HIV infected (HIV+) children who intiatied early cART compared to uninfected controls. To explore possible relationships between these alterations, we used tractography to identify HIV-related abnormalities within …
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From spatio-temporal data to a weighted and lagged network between functional domains: Applications in climate and neuroscience
… the method successfully identifies well-known “resting state networks” as well as a few areas forming the backbone of the functional cortical network. Finally, we contrast the proposed methods to dimensionality reduction techniques (e.g., clustering PCA/ICA) and show their limitations.
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Network approaches to understanding the functional effects of focal brain lesions
… increasing complexity are performed based upon resting state functional MRI. In patients with focal brain tumours, the full complement of resting state networks were apparent, while also suggesting putative patterns of network plasticity. Connectome analysis was able to identify potential …
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Simultaneous DTI and rs-fMRI using the navigated diffusion sequence
… single nav sequence), modified to acquire BOLD resting state fMRI (rs-fMRI) data. We also investigated inserting a second 3D EPI acquisition in the middle of each DTI volume acquisition (hereafter called the double nav sequence) to increase fMRI temporal resolution. Two adult subjects were …
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Functional MRI Investigation of the Neural Basis of Human Pain Processing in the Brainstem and Spinal Cord; Descending Regulation and Chronic Pain
… brainstem and spinal cord pain regulation and resting-state networks, and then compare this to data from groups with fibromyalgia (FM) and provoked vestibulodynia (PVD). FM and PVD are two chronic pain conditions disproportionately affecting women, the underlying mechanisms of which are still …
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Neural markers of antisocial behaviour in offenders and their relationship with risk-factors of offending
… Thus, Studies 1 and 2 compared whole-brain resting-state power spectra (rs-PS) between offenders and non-offenders, and Study 3 performed a meta-analysis of task-based neural activity differences between offenders and non-offenders. Results from Studies 1 and 2 indicated that offenders were …
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Effect of scan time on resting state parameters
… low-frequency fluctuations (LFF) in a resting-state brain has steadily grown. By measuring LFF (< 0.08 Hz) in blood-oxygen-level-dependent (BOLD) signals, resting-state functional magnetic resonance imaging (rs-fMRI) has proven to be a powerful tool in exploring brain network …
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Differences in resting state functional networks in HIV infected and uninfected children at age 7 years
… have measured their impact on functional brain networks in young children. We use resting state functional magnetic resonance imaging (RS-fMRI) to explore differences in functional connectivity (FC) in HIV infected children stable on HAART and in HIV uninfected children. The 9 resting state …
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The influence and manipulation of resting-state brain networks in alcohol use disorder
… in the signature of large-scale, dynamic brain networks, which can show whether an intervention is effective. One such intervention is episodic future thinking, which has been shown to reduce delay discounting and orient people toward pro-social, long-term outcomes. To better understand decision …
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Assessing functional connectivity in the newborn brain using fNIRS
… Unveiling the processes of emergence of resting state networks at a very early stage of life could shed light on the neuronal origins of these diseases. However, the study of the inception and development of functional connectivity in the newborn brain poses exceptional challenges, due to …
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Investigating the Impact of Sleep on Early Dynamic Functional Connectivity: A High-Density Diffuse Optical Tomography Study in Term and Preterm Neonates
… clarify the relationship between neonatal sleep states, gestational age (GA), and functional brain development. Shedding light on the intersection of these three factors serves a broader goal to improve long-term clinical outcomes for vulnerable populations staying in the neonatal intensive care …
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Neural Processes Underlying the Intrusion of Unwanted Memories
… and without intrusions by focusing on two key resting-state networks that consistently show up in the literature on attention: the frontoparietal control network (FPN) and the cingulo-opercular network (CON). The study also attempts to relate these networks to reactive control and proactive …
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