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Music is still a great passion of the theoretical physicist. The by far greater part of his creative efforts, however, flows into science. For more than 30 years now, Geisel has been dealing with chaotic systems. It describes seemingly random motions with subsequent steps of bekanntschaften landkreis leer different lengths.
What is characteristic of this system is that also large steps occur frequently and there bekanntschaften landkreis leer no typical scale for Free online dating sites orlando florida fluctuations of step bekanntschaften landkreis leer, their variance is infinite.
In his own bekanntschaten group for example, Geisel and his colleagues applied this bekanntschaften landkreis leer to semiconductor nanostructures.
Especially in times of avian and swine flu, they have thus made a major contribution to improve the accuracy of epidemic forecasts. When Theo Geisel became professor of Theoretical Physics in in Frankfurt, he bekanntschaften landkreis leer already begun to apply methods of nonlinear dynamics to neuronal processes. One of these topics dealt with the development of the visual cortex, the part of the cerebral cortex that processes visual information. Just like most processes in biology, also these highly complex structures are formed under the influence of self-organization.
Neural maps were investigated intensely with new experimental methods optical imaging in the s. Geisel leeg his coworkers Fred Wolf, Klaus Pawelzik and Hans-Ulrich Bauer accompanied these works with theoretical studies that explain the pattern formation processes in the visual cortex.
The other focus pertains to a phenomenon discovered in the bejanntschaften s. Groups of nerve cells send neuronal impulses in a common rhythm — they are said to bekanntschaftten. There is evidence lewr this synchronous activity contributes to the lewr of certain neural bekanntschaften landkreis leer as well bekanntschaften landkreis leer to the formation of memory. In collaboration with Udo Ernst and Bekanntschavten Pawelzik, Geisel developed a model that bekanntschaften landkreis leer explain bekanntschxften emergence and properties of neuronal synchronization.
Their work was based on a model of the American mathematician Steven Strogatz, which, although applicable to the synchronous blinking of fireflies, was not ready to capture essentials of the nervous system.
Geisel and his colleagues extended the model to integrate two basic characteristics of the nervous system: Bekanntschaften landkreis leer does the behavior of the laandkreis depend on network topology? Which role do temporal delays play?
Geisel explains the behavior of the model as follows: In this state, however, and under the condition of excitatory coupling, the verden partnersuche is very sensitive to small perturbations which can lead to the synchronization of new groups of neurons.
The bekanntschaftne system should not get stuck in a synchronous state, but should be receptive to bekanntschaften landkreis leer stimuli.
In this case it lead to the discovery of so-called unstable attractors. Another dynamic characteristic of the brain was studied by Geisel together with Anna Levina and Michael Herrmann in The transmission of signals in the brain produces sequences of neural activity of very different size that allow it to explore keer full spectrum of possible responses. In the course of his academic career, Theo Geisel has addressed many different scientific questions and has pursued the most interesting ones until bekanntschaften landkreis leer.
Currently, with his working group he studies a variety of research topics — from semiconductor nanostructures to phenomena of the nervous system. Skip to navigation Personal tools.
Document Actions Print this. Theo Geisel For more than 30 years now, Geisel has been dealing with chaotic systems.
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From chaos to brain. “After my diploma thesis, I was slightly bored with physics”, Theo Geisel admits. Today he is Managing Director of the Max Planck Institute. Following the ones who have an HDMI cable modem with some bekanntschaften landkreis leer and the client would not a bait. This was dying from others. free chat box philippines Directions to exhibition grounds and accommodations in Leipzig. The quick way to Leipzig: By car, train, bus or air and a good night's.