- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 31 to 40 of 78 (0.007 seconds)| 31 |
Advanced gradient coil design for MRIHaywood, Brett January 2005 (has links)
No description available.
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Flow measurement with T1-weighted MRI techniquesNazarpoor, Mahmood January 2004 (has links)
No description available.
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Techniques for high-performance fMRIZwaag, Wietske van der January 2006 (has links)
No description available.
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Development of diffusion-weighted imaging at high magnetic fieldNunes, Rita G. January 2005 (has links)
No description available.
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Towards quantitative MR-based functional imaging : evaluation of blood oxygen level dependent (BOLD), perfusion and blood volume imaging methodsTjandra, Teddy January 2004 (has links)
No description available.
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| 36 |
Simultaneous segmentation and registration of medical imagesChen, Xiaohua January 2005 (has links)
No description available.
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FMRI simulator : development and applicationsDrobnjak, Ivana January 2007 (has links)
No description available.
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Low frequency signals in FMRIDe Luca, Marilena January 2004 (has links)
No description available.
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Modelling of distortion problems in OMT super-conducting magnetic fieldsHuang, Xianri January 2003 (has links)
No description available.
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A multimodal investigation of dynamic face perception using functional magnetic resonance imaging and magnetoencephalographyFoley, Elaine January 2012 (has links)
Motion is an important aspect of face perception that has been largely neglected to date. Many of the established findings are based on studies that use static facial images, which do not reflect the unique temporal dynamics available from seeing a moving face. In the present thesis a set of naturalistic dynamic facial emotional expressions was purposely created and used to investigate the neural structures involved in the perception of dynamic facial expressions of emotion, with both functional Magnetic Resonance Imaging (fMRI) and Magnetoencephalography (MEG). Through fMRI and connectivity analysis, a dynamic face perception network was identified, which is demonstrated to extend the distributed neural system for face perception (Haxby et al.,2000). Measures of effective connectivity between these regions revealed that dynamic facial stimuli were associated with specific increases in connectivity between early visual regions, such as inferior occipital gyri and superior temporal sulci, along with coupling between superior temporal sulci and amygdalae, as well as with inferior frontal gyri. MEG and Synthetic Aperture Magnetometry (SAM) were used to examine the spatiotemporal profile of neurophysiological activity within this dynamic face perception network. SAM analysis revealed a number of regions showing differential activation to dynamic versus static faces in the distributed face network, characterised by decreases in cortical oscillatory power in the beta band, which were spatially coincident with those regions that were previously identified with fMRI. These findings support the presence of a distributed network of cortical regions that mediate the perception of dynamic facial expressions, with the fMRI data providing information on the spatial co-ordinates paralleled by the MEG data, which indicate the temporal dynamics within this network. This integrated multimodal approach offers both excellent spatial and temporal resolution, thereby providing an opportunity to explore dynamic brain activity and connectivity during face processing.
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