Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Winfried Wojtenek"'
Autor:
Elisa Bonaccorso, Nicole M. Weinstein, Carlos A. Rodríguez-Saltos, Ignacio T. Moore, James A. Tallant, Winfried Wojtenek, Camilo Escallón
Publikováno v:
Journal of Experimental Zoology Part A: Ecological Genetics and Physiology. 325:501-510
Elevation has been proposed as a dominant ecological variable shaping life history traits and subsequently their underlying hormonal mechanisms. In an earlier meta-analysis of tropical birds, elevation was positively related to testosterone levels. F
Publikováno v:
Brain, behavior and evolution. 86(2)
In mid- to high-latitude songbirds, seasonal reproduction is stimulated by increasing day length accompanied by elevated plasma sex steroid levels, increased singing, and growth of the song control nuclei (SCN). Plasticity of the SCN and song behavio
Publikováno v:
The Journal of Comparative Neurology. 446:25-36
The central connections of the electrosensory system were studied in the paddlefish Polyodon spathula by injecting biotinylated dextran amines into the dorsal octavolateral nucleus (DON), the cerebellum, and the mesencephalic tectum. The sole target
Publikováno v:
Neurocomputing. :451-458
The paddlefish detects electric fields of its planktonic prey. Each plankton particle, such as a moving Daphnia , is an electric dipole. Primary afferent neurons of the paddlefish electrosensory system were found to respond transiently to moving dipo
Publikováno v:
Journal of Experimental Biology. 204:1391-1399
The freshwater paddlefish Polyodon spathula (Polyodontidae) feeds primarily on the water flea (Daphnia sp.), and previous studies suggest that these fish detect their planktonic prey using their rostral electrosensory system. Zooplankton produce dire
Publikováno v:
Journal of Experimental Biology. 204:1381-1389
The long rostrum of the paddlefish Polyodon spathula supports an extensive array of ampullary electroreceptors and has been proposed to function as an antenna for detecting planktonic prey. Evidence in support of this hypothesis is presented in exper
Autor:
Lon A. Wilkens, Xing Pei, Jennifer Twitty, Winfried Wojtenek, David F. Russell, Enrico Simonotto, Frank Moss, Alexander Neiman, Eva Wagner, Barbara A. Wettring
Publikováno v:
Scopus-Elsevier
We studied synchronization of electrosensitive cells of the paddlefish by means of electrophysiological experiments. We found that primary afferents of the paddlefish are represented by noisy nonlinear oscillators. Different types of phase locked reg
Autor:
Alexander Neiman, Frank Moss, Xing Pei, Hans A. Braun, Lon A. Wilkens, Martin T. Huber, Winfried Wojtenek, David F. Russell, Karlheinz Voigt
Publikováno v:
Physical Review Letters. 82:660-663
Synchronization of electrosensitive cells of the paddlefish is studied by means of electrophysiological experiments. Different types of noisy phase locked regimes are observed. The experimental data are compared with computer simulations of a noise-m
Publikováno v:
Journal of physiology, Paris. 96(5-6)
Behavioral and electrophysiological experiments have shown that the elongated paddlefish rostrum, with its extensive population of ampullae of Lorenzini, constitutes a passive electrosensory antenna of great sensitivity and spatial resolution. As dem
Autor:
Ulrike Feudel, Xing Pei, Hans A. Braun, Martin T. Huber, Alexander Neiman, Winfried Wojtenek, Frank Moss
Publikováno v:
Chaos (Woodbury, N.Y.). 10(1)
We study global bifurcations of the chaotic attractor in a modified Hodgkin-Huxley model of thermally sensitive neurons. The control parameter for this model is the temperature. The chaotic behavior is realized over a wide range of temperatures and i