Open AccessThe temporal dynamics of consolidation and reconsolidation decrease during postnatal development
Author(s) -
Solène Languille,
Nadège Gruest,
Paullette Richer,
Bernard Hars
Publication year - 2008
Publication title -
learning and memory
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.228
H-Index - 136
eISSN - 1549-5485
pISSN - 1072-0502
DOI - 10.1101/lm.933208
Subject(s) - anisomycin , memory consolidation , neuroscience , consolidation (business) , psychology , amnesia , protein synthesis inhibitor , cognition , taste aversion , chemistry , protein biosynthesis , cognitive psychology , cycloheximide , hippocampus , taste , biochemistry , accounting , business
The temporal dynamics of consolidation and reconsolidation of taste/odor aversion memory are evaluated during rat pup growth at postnatal days 3, 10, and 18. This is assessed through the temporal gradients of efficacy of a protein synthesis inhibitor (anisomycin) in inducing amnesia after either acquisition (consolidation) or reactivation (reconsolidation). The results show a progressive reduction with age of the delay during which the inhibitor is able to induce amnesia. Control experiments rule out a reduction of anisomycin efficacy due to blood brain barrier growth or decrease in protein synthesis inhibition. Thus, these results present the first evidence that the protein synthesis-dependent phase of memory stabilization requires less time with age. This decrease occurs in parallel for consolidation and reconsolidation. Such changes in the dynamics of memory processing could contribute to the cognitive improvement associated with development.
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