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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 51 to 60 of 90 (0.018 seconds)Spelling suggestions: "subject:"cortex"" "subject:"kortex""
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The role of human medial frontal cortex in cognition investigated by functional magnetic resonance imaging. / Die Rolle des menschlichen medialen frontalen Kortex in der Kognition untersucht mit Hilfe der funktionellen Magnetresonanztomographie.Lütcke, Henry 19 October 2007 (has links)
No description available.
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The role of network interactions in timing-dependent plasticity within the human motor cortex induced by paired associative stimulationConde Ruiz, Virginia 04 December 2013 (has links) (PDF)
Spike timing-dependent plasticity (STDP) has been suggested as one of the key mechanism underlying learning and memory. Due to its importance, timing-dependent plasticity studies have been approached in the living human brain by means of non-invasive brain stimulation (NIBS) protocols such as paired associative stimulation (PAS). However, contrary to STDP studies at a cellular level, functional plasticity induction in the human brain implies the interaction among target cortical networks and investigates plasticity mechanisms at a systems level.
This thesis comprises of two independent studies that aim at understanding the importance of considering broad cortical networks when predicting the outcome of timing-dependent associative plasticity induction in the human brain. In the first study we developed a new protocol (ipsilateral PAS (ipsiPAS)) that required timing- and regional-specific information transfer across hemispheres for the induction of timing-dependent plasticity within M1 (see chapter 3). In the second study, we tested the influence of individual brain structure, as measured with voxel-based cortical thickness, on a standard PAS protocol (see chapter 4). In summary, we observed that the near-synchronous associativity taking place within M1 is not the only determinant influencing the outcome of PAS protocols. Rather, the online interaction of the cortical networks integrating information during a PAS intervention determines the outcome of the pairing of inputs in M1. Read more
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Analýza a klasifikace dat ze snímače mozkové aktivity / Data Analysis and Clasification from the Brain Activity DetectorJileček, Jan January 2019 (has links)
This thesis aims to implement methods for recording EEG data obtained with the neural activity sensor OpenBCI Ultracortex IV headset. It also describes neurofeedback, methods of obtaining data from the motor cortex for further analysis and takes a look at the machine learning algorithms best suited for the presented problem. Multiple training and testing datasets are created, as well as a tool for recording the brain activity of a headset-wearing test subject, which is being visually presented with cognitive challenges on the screen in front of him. A neurofeedback demo app has been developed, presented and later used for calibration of new test subjects. Next part is data analysis, which aims to discriminate the left and right hand movement intention signatures in the brain motor cortex. Multiple classification methods are used and their utility reviewed.
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The role of network interactions in timing-dependent plasticity within the human motor cortex induced by paired associative stimulationConde Ruiz, Virginia 07 November 2013 (has links)
Spike timing-dependent plasticity (STDP) has been suggested as one of the key mechanism underlying learning and memory. Due to its importance, timing-dependent plasticity studies have been approached in the living human brain by means of non-invasive brain stimulation (NIBS) protocols such as paired associative stimulation (PAS). However, contrary to STDP studies at a cellular level, functional plasticity induction in the human brain implies the interaction among target cortical networks and investigates plasticity mechanisms at a systems level.
This thesis comprises of two independent studies that aim at understanding the importance of considering broad cortical networks when predicting the outcome of timing-dependent associative plasticity induction in the human brain. In the first study we developed a new protocol (ipsilateral PAS (ipsiPAS)) that required timing- and regional-specific information transfer across hemispheres for the induction of timing-dependent plasticity within M1 (see chapter 3). In the second study, we tested the influence of individual brain structure, as measured with voxel-based cortical thickness, on a standard PAS protocol (see chapter 4). In summary, we observed that the near-synchronous associativity taking place within M1 is not the only determinant influencing the outcome of PAS protocols. Rather, the online interaction of the cortical networks integrating information during a PAS intervention determines the outcome of the pairing of inputs in M1. Read more
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Mechanismen der Entwicklung des zerebralen Kortex / Mechanisms of the development of the cerebral cortexMühlfriedel, Sven 02 November 2004 (has links)
No description available.
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Der Effekt des Alterns auf funktionelle Deaktivierung im somatosensorischen System / Eine fMRT-Studie / Effects of age on functional deactivation in the somatosensory system / fMRI studySohns, Jan Martin 09 December 2009 (has links)
No description available.
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Vergleichende MR-volumetrische Untersuchung des dorsolateralen präfrontalen Kortex bei Schizophrenie, Bipolarer Störung, Zwangserkrankung und gesunden Kontrollpersonen / Comparative MR volumetric analysis of the dorsolateral prefrontal cortex in schizophrenia, bipolar disorder, obsessive compulsive disorder and healthy controlsKremer, Kristina 11 April 2011 (has links)
No description available.
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Einfluss der transkraniellen Gleichstromstimulation auf die stimmungsabhängige Informationsverarbeitung bei gesunden Probanden / Effect of transcranial direct current stimulation on emotional processing in healthy humansPohlers, Henriette 09 January 2012 (has links)
No description available.
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Untersuchungen der Mechanismen kortikaler Neuroplastizität und Exzitabilität durch niederfrequente rTMS und dopaminerges Pharmakon - Eine doppelblinde und placebokontrollierte Probandenstudie / Dopaminergic Potentiation of rTMS-Induced Motor Cortex InhibitionSpeck, Sascha 14 March 2010 (has links)
No description available.
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Neuronal and Perceptual Effects of Selective Attention in the Primate Visual System / Neuronale und perzeptuelle Effekte selektiver Aufmerksamkeit im visuellen System von PrimatenNiebergall, Robert 19 January 2010 (has links)
No description available.
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