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The primitive brains of platyhelminthes
Ionic bases of action potentials in identified flatworm neurones
Ionic mechanisms in the generation of action potentials in the central multimodal neurones of Notoplana pharmacologically resemble those in higher metazoans.
Tetrodotoxin‐Sensitive action potentials from the brain of the polyclad flatworm, Notoplana acticola
Most brain cells filled with Lucifer Yellow dye were found to be heteropolar multipolar neurones quite unlike those commonly found in other invertebrate ganglia.
Physiology and in situ identification of putative aminergic neurotransmitters in the nervous system of Gyrocotyle fimbriata, a parasitic flatworm.
The experiments indicate that the fluorescing substance in the neurones is not a known catecholamine and could be an amino acid, and this activity can be blocked by application of APB, an aminergic blocking agent.
Responses of midbrain dorsal raphe neurons to ethanol studied in brainstem slices.
Primitive nervous systems: action of aminergic drugs and blocking agents on activity in the ventral nerve cord of the flatworm Notoplana acticola.
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.
Primitive nervous systems: electrical activity in ventral nerve cords of the flatworm, Notoplana acticola.
The diffuse potential appears to be conducted throughout the plexus but preferential conducting pathways occur around lesions, and both diffuse and fast potentials show facilitation of response to repeated stimulation.
Nerve repair and behavioral recovery following brain transplantation in Notoplana acticola, a polyclad flatworm.
- L. Davies, L. Keenan, H. Koopowitz
- Biology, PsychologyThe Journal of experimental zoology
- 1 August 1985
Although anatomical and functional neural connections apparently were made rapidly following brain transplantation, the specificity of the reconnections remains to be shown.
Primitive nervous systems: electrophysiology of inhibitory events in flatworm nerve cords.
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: electrical activity in the nerve cords of the parasitic flatworm, Gyrocotyle fimbriata.
A large compound potential (LCP) could be evoked in the longitudinal nerve cords of Gyrocotyle fimbriata and showed decremental conduction, which resulted in facilitation lasting several minutes.