In Erlangen multigap Pseudospark switches are under development to meet the requirements of the pulse forming network (PFN) for the SIS100/300 kicker magnets which are: hold-off voltage > 70 kV, peak current of ~ 6 kA and pulse duration of up to 6 μs. In the final phase of development a three-gap switch will be used. As reliable triggering is a key problem, different trigger methods were invest...

The quasi-sinusoidal electric organ discharge (EOD) of the weakly electric fish Sternopygus is involved in communication and orientation. Each monophasic pulse of the low-intensity EOD is a compound action potential (AP) from the simultaneously firing electrocytes of the electric organ. EOD frequency is lower and EOD pulse duration longer in sexually mature males than in sexually mature females...

The purpose of this study was to develop guidelines for reproducible esophageal pacing of the atria and to determine the incidence of successful initiation and termination of tachycardia using this technique in patients with a history of spontaneous supraventricular tachycardia (SVT). Strength-duration curves were performed in 39 patients using a bipolar esophageal lead with a 2.9-cm interelect...

To categorize variation in disturbance calls of the weakfish Cynoscion regalis and to understand their generation, we recorded sounds produced by different-sized fish, and by similar-sized fish at different temperatures, as well as muscle electromyograms. Single, simultaneous twitches of the bilateral sonic muscles produce a single sound pulse consisting of a two- to three-cycle acoustic wavefo...

In adult males of the South African weakly electric bulldog fish, Marcusenius pongolensis, the duration of the electric organ discharge (EOD) increases with body size over lifetime. Although there is experimental support for intrasexual selection (male-male competition) having shaped the males' EOD pulse duration in evolution, nothing is known about intersexual selection, such as female choice....