Complexity Digest 2005.47 - 08

05/11/25

Two Most Recent Web Cast + Podcast :

European Conference on Complex Systems (ECCS05)

Paris, France, Paris, 05/11/14-18
">complexity.vub.ac.be/~comdig/05ECCS/

[b][green]Illuminating the Shadow of the Future

Ann Arbor, Mi 05/09/23-25
Webcast">complexity.vub.ac.be/~comdig/05ISF/index.html

[b][red]WebcastArchive:
http://complexity.vub.ac.be/~comdig/

Tszzzzzt! Electric Fish May Jam Rivals' Signals, Science News Bookmark and Share

Excerpts:
BROWN GHOST. This male brown ghost knifefish has an electric organ in his tail. Its collection of nerves fires rapidly and surrounds him with a weak electric field. Receptors scattered across his body, especially around his head, monitor the field and use distortions in the field to navigate and pick up information about other electric fish. Joerg Oestreich, Harvard Medical School
When researchers put two fish in an unfamiliar tank or used a field-emitting dummy to mimic an intruder in a fish's home tank, both males and females tended to raise their electric-field frequencies as they attacked. The changes' timing and context convinced the researchers that the attacking fish was jamming the other's signals.