(full paper is archived in the Miller Library)
Title: Bioluminescence in Pannychia moseleyi as a representation of neural activity
Student Author(s): Hoke, Kim
Faculty Advisor(s): Thompson, Stuart
Location: Final Papers Biology 175H
Date: June 1993
Abstract: Pannychia moseleyi exhibits waves of bioluminescence under neural control. The mean speed of propagation of the luminescent waves is 16.8 +/- 8.8 cm/s. Excitation propagates in the radial nerves and in the nerve net, with respective conduction velocities of 31.9 cm/s and 7.1 cm/s . The bioluminescence acts as an excitable medium; however, the dispersion relation predicted by excitable media theory between conduction velocity and period is not observed. Pacemakers controlling the bioluminescence have periods between 0.33 and 0.69 s. The activity of these pacemakers may be controlled by an inward calcium current because the period of the pacemaker increases in high concentrations of magnesium.