[Unit activities of the salmon Salmo salar preoptic nucleus in Parr, Parr-Smolt and Smolt stadia].
The olfactory and gustatory stimulations with NaCl (10(-5)-10(-2) M/1) bring about certain typical modifications of the preoptic cells activity in the case of "Parr" and "Parr smolt". The "on" or "off" or "on and off" effects are very marked. Unlike the "Smolt" stage is accompanied by an important decrease of the preoptic cells activity, sometimes until complete silence of the nucleus.


METHODS
sequential analysis and statistical analysis. The activities recorded on a magnetic tape are feld to a mini computer.
D000818:Animals; D001981:Bronchial Arteries / Q000502:physiology*; D002490:Central Nervous System / Q000502:physiology*; D005071:Evoked Potentials; D007031:Hypothalamus / Q000502:physiology*; D009833:Olfactory Pathways / Q000502:physiology*; D011301:Preoptic Area / Q000502:physiology*; D012474:Salmon / Q000502:physiology*; D012965:Sodium Chloride; D013268:Stimulation, Chemical; D013649:Taste / Q000502:physiology
D012965:Sodium Chloride
Etude des activités unitaires du noyau préoptique du Saumon Salmo salar aux stades Parr, Parr-Smolt et Smolt