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Principal Investigator
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Address
TUM - Physik Department T35
James-Franck-Straße 1
85748 Garching
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Phone
+49-89-289-12362
Fax
+49-89-289-12296
Email
lvh[at]tum.de
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Research topics
- Neuronal information processing arising from mechanosensory perception, such as audition and lateral line, and vision
- Auditory processing
- Theory of time-resolved synaptic plasticity (STDP), the ensuing learning and map formation
- Elementary excitations of biomembranes.
- There is meanwhile a whole zoo of animals whose neuronal perception algorithms have been clarified; for example, the barn owl, the sand scorpion, the clawed frog Xenopus, many fish species (amongst them the blind Mexican cave fish), boids and vipers.
- In the past I have also worked, in part extensively, in the fields of applied (and pure) mathematics, statistical physics, theoretical immunology, and theoretical membrane physics.
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Scientific Approach
We use mathematical methods from the theory of dynamical systems, in particular, ordinary and partial differential equations and bifurcation theory, probability theory, and the theory of stochastic processes to model detection and early (incl. midbrain) neuronal evaluation on the basis of electrophysiological and behavioral data and to compare the latter with theoretical predictions.
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Group Members Associated with BCCN
- Andrea Vollmayr
- Matthias Knippner
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Related Publications
- Friedel, P, Young, BA, and van Hemmen, JL (2008): Auditory localization of ground-borne vibrations in snakes. Phys Rev Lett 100 (4): 048701-048701. ( Abstract )
- Goulet, J, Engelmann, J, Chagnaud, BP, Franosch, JM, Suttner, MD, and van Hemmen, JL (2008): Object localization through the lateral line system of fish: theory and experiment. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 194 (1): 1-17. ( Abstract )
- Sichert, AB, Friedel, P, and van Hemmen, JL (2006): Snake's perspective on heat: reconstruction of input using an imperfect detection system. Phys Rev Lett 97 (6): 068105-068105. ( Abstract )
- Franosch, JM, Lingenheil, M, and van Hemmen, JL (2005): How a frog can learn what is where in the dark.Phys Rev Lett 95 (7): 078106-078106. ( Abstract )
- Leibold, C and van Hemmen, JL (2005): Spiking neurons learning phase delays: how mammals may develop auditory time-difference sensitivity. Phys Rev Lett 94 (16): 168102-168102. ( Abstract )
- Brownell, PH and Leo van Hemmen, J (2001): Vibration sensitivity and a computational theory for prey-localizing behavior in sand scorpions. Integrative and Comparative Biology 41 (5): 1229.
- Kempter, R, Leibold, C, Wagner, H, and van Hemmen, JL (2001): Formation of temporal-feature maps by axonal propagation of synaptic learning. Proc Natl Acad Sci U S A 98 (7): 4166-4171. ( Abstract )
- Leibold, C, Kempter, R, and van Hemmen, JL (2001): Temporal map formation in the barn owl's brain. Phys Rev Lett 87 (24): 248101-248101. ( Abstract )
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