Independence of first- and second-order memories in newborn rabbits.

Gérard Coureaud (1) , Solène Languille (2) , Virginie Joly (1) , Benoist Schaal (1) , Bernard Hars (2)

1 CSGA - Centre des Sciences du Goût et de l'Alimentation [Dijon]
2 CNPS - Centre de Neurosciences Paris-Sud

The mammary pheromone promotes the acquisition of novel odorants (CS1) in newborn rabbits. Here, experiments pinpoint that CS1 becomes able to support neonatal learning of other odorants (CS2). We therefore evaluated whether these first- and second-order memories remained dependent after reactivation. Amnesia induced after CS2 recall selectively blocked this memory, when recall and amnesia of CS1 left the souvenir of CS2 safe; this finding partially differed from results obtained in adult mammals. Thus, in this model of neonatal appetitive odor learning, second-order memory seems to depend on first-order memory for its formation but not for its maintenance.

Domaines: Sciences du Vivant [q-bio]

Gérard Coureaud, Solène Languille, Virginie Joly, Benoist Schaal, Bernard Hars. Independence of first- and second-order memories in newborn rabbits.. Learning and Memory, 2011, 18 (6), pp.401-4. ⟨10.1101/lm.2145111⟩. ⟨hal-00824787⟩