Browsing Fakultät für Physik (inkl. GAUSS) by Advisor & Referee "Geisel, Theo Prof. Dr."
Now showing items 1-20 of 37
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Coupled dynamics of the spread of COVID-19, interventions and human behaviour
(2024-03-14)The COVID-19 pandemic has presented an unprecedented challenge to global health, prompting a need for comprehensive research into the coupled dynamics of virus spread, intervention strategies, and human behavior. This ... -
Data Analysis of Musical Timeseries
(2024-01-08)Music, despite its ubiquitous familiarity, is surprisingly hard to define. Should one consider its acoustic features, the mechanics by which it is produced and performed, as well as the cultural norms attached to them, ... -
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. ... -
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 ... -
Random Focusing of Tsunami Waves
(2015-11-09)Branched flow is a universal phenomenon of random focusing that occurs in wave or particle flows that propagate in weakly scattering, correlated random media. The consecutive effect of small random forces leads to regions ... -
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, ... -
Anomalous Diffusion in Ecology
(2015-01-14)As measurement techniques improve and increasingly sophisticated analysis methods are more common, biology becomes subject to the wide range of treatments coming from physics. In this thesis, we consider a specific ... -
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 ... -
Synchronization, Neuronal Excitability, and Information Flow in Networks of Neuronal Oscillators
(2012-09-27)Synchronization is an omnipresent phenomenon in the dynamics of complex neuronal networks, emerging between single neurons as the simultaneous generation of action potentials and on larger spatial scales in the ... -
Transport in nicht-hermiteschen niedrigdimensionalen Systemen
(2012-01-05)In this work, scientific methods and findings known from mesoscopic physics, primarily used for semiconductor nanostructures, will be transferred to photonic systems, enabled by the analogy ... -
Symmetry Breaking and Pattern Selection in Models of Visual Development
(2010-10-13)Response properties of neurons in the visual cortex form spatial representations called maps of several stimulus features such as orientation preference (OP) or ocular dominance (OD). This ... -
Branched Flow and Caustics in Two-Dimensional Random Potentials and Magnetic Fields
(2010-09-14)Branched flow is a universal phenomenon of two-dimensional wave or particle flows which propagate through a weak random potential. Its origin is the formation of caustics, which are locations ... -
Scale-free Fluctuations in in Bose-Einstein Condensates, Quantum Dots and Music Rhythms
(2010-05-25)Mesoscopic systems are prone to substantial fluctuations that typically can not be neglected or avoided. The understanding of the origin and the consequences of these fluctuations (e.g.~for ... -
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 ... -
The Time Course of Negative Priming
(2010-03-23)Selective attention enables goal-directed behavior despite the permanent, immense input to the sensory system. Contradicting early speculations of an active attending and passive ignoring, ... -
Eine Symmetrie der visuellen Welt in der Architektur des visuellen Kortex.
(2009-12-15)Neurons in the visual cortex respond best to oriented visual stimuli at a particular position in the visual field. Their selectivities for position and orientation vary systematically along ... -
Transport, disorder and reaction in spreading phenomena
(2009-12-01)Mostly motivated by recent empirical findings on human and animal mobility, superdiffusion in the presence of inhomogeneities as well as spatial spread of infectious diseases due to ... -
Mathematical Description of Differential Hebbian Plasticity and its Relation to Reinforcement Learning
(2009-11-18)The human brain consists of more than a billion nerve cells, the neurons, each having several thousand connections, the synapses. These connections are not fixed but change all the time. In order to describe synaptic ... -
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 ... -
Parametric Bose-Hubbard Hamiltonians: Quantum Dissipation, Irreversibility, and Pumping
(2008-09-11)In this thesis, we study interacting bosons on lattices consisting of a few sites. The main focus is on their response to external driving fields, their transport and decay properties. We ...