Browsing Fakultät für Physik (inkl. GAUSS) by Advisor & Referee "Geisel, Theo Prof. Dr."
Now showing items 21-37 of 37
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Directed Chaos in Magnetic Billiard Systems
(2007-01-29)In this thesis, we report our studies of various aspects of directed chaotic transport in the realm of quasi-one-dimensional billiard chains in the presence of a magnetic field perpendicular ... -
Pattern selection in the visual cortex
(2006-04-25)The orientation map in the primary visual cortex is an important model system for studying cortical development. By quantifying large sets of functional brain imaging data we find that the ... -
Dynamical modeling with application to friction phenomena
(2005-11-22)The thesis deals with dynamical modeling as an alternative approach to the conventional way of modeling with static models. From the perspective of generalized synchronization the main ... -
Dynamics of Population Coding in the Cortex
(2005-08-19)In this thesis, I investigate the action potential (AP) initiation dynamics in cortical neurons and its consequences for dynamical population coding in the cortex.In chapter 3, I assess the ... -
Data driven analysis of brain activity and functional connectivity in fMRI
(2003-12-18)In this thesis the perspectives of statistical and graph-theoretical methods for the analysis of fMRI data are investigated. This involves preprocessing, extraction of components, functional ... -
Superdiffusion in Scale-Free Inhomogeneous Environments
(2003-08-21)We investigate the impact of external potentials on superdiffusive random walks known as Lévy flights and show that even strongly superdiffusive transport is substantially affected by ... -
Open Mesoscopic Systems: beyond the Random Matrix Theory
(2003-08-19)Physical systems having sizes between microscopic and macroscopic are referred to as mesoscopic. The motion in mesoscopic systems is phase-coherent, that means they must be treated ... -
Approximations and Applications of Nonlinear Filters
(2003-06-04)In this thesis a certain estimation problem for nonlinear stochastic dynamical systems in discrete time, known as filtering in the literature, is considered. The objective is to reconstruct ... -
Collective Dynamics in Networks of Pulse-Coupled Oscillators
(2003-02-25)Pulse-coupled oscillators constitute a paradigmatic class of dynamical systems interacting on networks. They model a variety of natural systems including earthquakes, flashing fireflies and ... -
Dynamics and Eigenfunctions of Hamiltonian Ratchets
(2002-07-09)In this thesis the mechanism is explained that leads to directed chaotic transport in Hamiltonian systems with spatial and temporal periodicity, allowing the construction and optimization ... -
Transport in Hamilton-Systemen: Von der Klassik zur Quantenmechanik
(2002-04-24)This thesis deals with classical and quantum mechanical transport properties of low dimensional Hamiltonian systems that possess a mixed phase space. It is demonstrated that even in ideal ... -
Aspects of Signal Processing in Noisy Neurons
(2001-11-06)It has become clear in recent years that stochastic effects, commonly known as noise, do not necessarily impede signal processing, but may actually serve to enhance it. The effect is known ... -
Statistical analysis of synaptic transmission at the calyx of Held synapse
(2001-04-25)In order to distinguish pre- and postsynaptic mechanisms contributing to short-term synaptic depression at the calyx of Held synapse in the rat auditory pathway, non-stationary EPSC fluctuation ... -
Quantenmechanik zwischen Regularität und Chaos
(2000-12-13) -
A semi-microscopic model of synaptic transmission and plasticity
(2000-08-28)A stochastic model of synaptic transmission has been designed on the basis of electro-physiological experiments. Monte Carlo simulations are performed which include presynaptic mechanisms ...