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Early hyperandrogenism affects the development of hippocampal function: preliminary evidence from an functional magnetic resonance imaging study of boys with familial male precocious puberty Universiteit Gent
The way in which sex hormones influence cognitive and affective brain development is poorly understood. Despite increasing knowledge in the area of pediatric mood disorders, little is known about the influence of sex hormones on the regulation of emotion. Animal studies and preliminary human studies suggest a strong impact of testosterone on limbic structures such as the hippocampus and amygdala. We used functional magnetic resonance imaging ...
Magnetic resonance imaging exploration of the human brain during 10 kHz spinal cord stimulation for failed back surgery syndrome: a resting state functional magnetic resonance imaging study KU Leuven
INTRODUCTION: Apart from the clinical efficacy of high frequency spinal cord stimulation at 10 kHz, the underlying mechanism of action remains unclear. In parallel with spinal or segmental theories, supraspinal hypotheses have been recently proposed. In order to unveil hidden altered brain connectome patterns, a resting state functional magnetic resonance imaging (rsfMRI) protocol was performed in subjects routinely treated for back and/or leg ...
Functional reorganization of cervical flexor activity because of induced muscle pain evaluated by muscle functional magnetic resonance imaging Universiteit Gent
Functional magnetic resonance imaging Vrije Universiteit Brussel KU Leuven
Background and purpose: Failed back surgery syndrome (FBSS) is a common and devastating chronic neuropathic pain disorder. Conventional spinal cord stimulation (SCS) applies electrical suprathreshold pulses to the spinal cord at a frequency of 40-60 Hz and relieves pain in FBSS patients. During the last decade, two major changes have emerged in the techniques of stimulating the spinal cord: paresthesia-free or subthreshold stimulation and ...
Analyzing Rice distributed functional magnetic resonance imaging data: a Baysian approach Vrije Universiteit Brussel
Analyzing functional MRI data is often a hard task due to the fact that these periodic signals are strongly disturbed with noise. In many cases, the signals are buried under the noise and not visible, such that detection is quite impossible. However, it is well known that the amplitude measurements of such disturbed signals follow a Rice distribution which is characterized by two parameters. In this paper, an alternative Bayesian approach is ...
Changes in lumbar muscle activity because of induced muscle pain evaluated by muscle functional magnetic resonance imaging Universiteit Gent
Study Design. Experimental study of changes in muscle recruitment during trunk extension exercise at 40% of the repetition maximum, because of induced muscle pain. Objective. To investigate the effect of lumbar muscle pain on muscle activity of the trunk muscles using muscle functional magnetic resonance imaging. Summary of Background Data. Changed muscle recruitment in patients has an important impact on the etiology and recurrence of low back ...
Functional Magnetic Resonance Imaging: an improved short record signal model Vrije Universiteit Brussel
The number of measurement problems for which it is either difficult or expensive to obtain long measurement records is rising. This short-record issue particularly pops up in biomedical measurements. In this paper, we study the problem of modeling fMRI signals used to map brain activity. In this paper, it is shown that, by using a postprocessing technique that is well equipped to handle the short-record problem, either the spatial resolution or ...