Impulse conduction in a sponge.

@article{Leys1999ImpulseCI,
  title={Impulse conduction in a sponge.},
  author={Sally P Leys and George O. Mackie and Robert W. Meech},
  journal={The Journal of experimental biology},
  year={1999},
  volume={202 (Pt 9)},
  pages={1139-50}
}
All-or-none propagated electrical impulses were recorded from the hexactinellid sponge Rhabdocalyptus dawsoni using suction electrodes attached to lumps of aggregated sponge tissue grafted onto the surface of pieces of the same sponge. Impulses were normally evoked by means of externally applied electrical shocks. Recorded externally using an a.c.-coupled amplifier, the electrical event was triphasic and lasted approximately 30 s; integration gave a diphasic waveform. A further integration to… CONTINUE READING
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