Browsing Fakultät für Physik (inkl. GAUSS) by Referee "Geisel, Theo Prof. Dr."
Now showing items 1-20 of 27
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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 ... -
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 ... -
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 ... -
Ballistic electron transport in graphene nanodevices and billiards
(2019-10-17)Nanodevices are objects with broad relevance for today's society, which bases its economy, operation, and communication onto digital resources. In ballistic nanodevices, disorder has either negligible or minor impact on ... -
Bursting dynamics and topological structure of in vitro neuronal networks
(2012-11-15)The complex relationship between network structure and dynamics is investigated in neuronal networks in vitro. The most prominent dynamics in these cultured networks is synchronous bursting. As the onset of these bursts ... -
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 ... -
Collective Spiking Dynamics in Cortical Networks
(2020-10-14)Even though information processing in the cortex most likely emerges from the collective interplay of billions of neurons, even basic properties of collective dynamics in cortical networks are still not known with certainty. ... -
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 ... -
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 ... -
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 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 ... -
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 ... -
Encoding of complex sounds in the auditory midbrain
(2015-06-16)How complex natural sounds such as speech and vocalizations are encoded in the main converging center of the auditory midbrain is not yet fully understood. For multi-units, which are composed of several single neurons, ... -
Goal-Oriented Control of Self-Organizing Behavior in Autonomous Robots
(2010-05-18)We study adaptive control algorithms within a dynamical systems approach for autonomous robots that cause the self-organization of coordinated behaviors without specific goals or particular ... -
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 ... -
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 ... -
Quantenmechanik zwischen Regularität und Chaos
(2000-12-13) -
Self-Organizing Control for Autonomous Robots
(2009-11-04)This thesis presents a self-referential dynamical systems approach to adaptive robot control. The central idea consists of the maintenance of behavioral activity in a robot, according to ... -
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 ...