Primitive nervous systems: electrical activity in ventral nerve cords of the flatworm, Notoplana acticola.

@article{Koopowitz1979PrimitiveNS,
  title={Primitive nervous systems: electrical activity in ventral nerve cords of the flatworm, Notoplana acticola.},
  author={Harold Koopowitz and Kerry L. Bernardo and Larry Keenan},
  journal={Journal of neurobiology},
  year={1979},
  volume={10 4},
  pages={
          367-81
        }
}
Electrical activity evoked in the major cords of the ventral submuscular nerve plexus were measured. Recording and stimulation utilized suction electrodes attached directly to exposed nerve cords. Four categories of potentials have been recorded: (a) short latency spikes which have relatively high thresholds and appear to be single units; (b) short duration fast compound spikes that are made up of a small number of large units; (c) long duration compound potentials that are made up from a large… 
8 Citations
Primitive nervous systems: electrophysiology of inhibitory events in flatworm nerve cords.
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Depression and the subsequent lifting of the inhibition occur in Ringer baths containing either normal sea water or equal mixtures of sea water and isotonic MgCl2.
Primitive nervous systems: action of aminergic drugs and blocking agents on activity in the ventral nerve cord of the flatworm Notoplana acticola.
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PTZ (Pentylenetetrazole) was shown to mimic the effects that these blocking agents had on evoked activity when they were tested alone and the possibility that the effector site of interaction may be the chloride ionophore is explored.
Neuronal repair and avoidance behavior in the flatworm, Notoplana acticola.
TLDR
Notoplana does not replace ganglionic tissue but does compensate adequately for CNS damage, and action potentials are conducted across repaired tissue in both split-brain and half-brain worms in both seawater and Mg2+-rich solutions.
Cytoarchitecture of primitive brains: Golgi studies in flatworms
TLDR
Using a modified rapid Golgi method, neurone configurations within Notoplana acticola, a free‐living polyclad flatworm, are investigated, finding a surprising diversity of cell types with complicated branching patterns.
K(+) currents in cultured neurones from a polyclad flatworm.
TLDR
Findings suggest that K(+) currents in Notoplana atomata play novel roles in shaping excitability properties, and are markedly rightward-shifted compared with most Shaker-like currents.
Multimodal interneurones in the polyclad flatworm,Alloeoplana californica
TLDR
Two morphological types of interneurones were found in the brain of Alloeoplana californica that respond to water vibration and to light offset and form part of the neuronal circuitry underlying arousal.
Neurobiology of parasitic platyhelminths: possible solutions to the problems of correlating structure with function.
TLDR
This paper has focused on some recent work in the laboratory, using patch-clamp recording techniques and quantitative fluorescence cytometry, as an example of newer methods that will hopefully resolve some of the unanswered questions concerning the nervous system of parasitic platyhelminths.

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Primitive nervous systems: action of aminergic drugs and blocking agents on activity in the ventral nerve cord of the flatworm Notoplana acticola.
TLDR
PTZ (Pentylenetetrazole) was shown to mimic the effects that these blocking agents had on evoked activity when they were tested alone and the possibility that the effector site of interaction may be the chloride ionophore is explored.
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