IFIBYNE   05513
INSTITUTO DE FISIOLOGIA, BIOLOGIA MOLECULAR Y NEUROCIENCIAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Updating during memory reconsolidation in the crab Chasmagnathus
Autor/es:
KACZER LAURA; HECTOR MALDONADO; MARTIN KLAPPENBACH
Reunión:
Congreso; Segunda Reunión conjunta de Neurociencias; 2010
Resumen:
The reconsolidation phenomenon describes that a stable
and consolidated memory recalled by a reminder enters a vulnerability phase
(labilization), followed by a process of re-stabilization (reconsolidation). Although
much has been learned regarding the mechanisms of reconsolidation, the search
for an endogenous function of this process remains a fundamental question. It
has been suggested that reconsolidation might enable memories to be modified or
updated. Here, we address this issue in the framework of reconsolidation of an
aversive contextual learning in the crab Chasmagnathus. Our preliminary results
show that after being reactivated by a reminder, crabs can incorporate new
information to an active memory trace. Interestingly, this information
consists of an appetitive stimulus, which also elicits a contextual
association. Thus, we hypothesize that by means of the
labilization-reconsolidation mechanism, a same context could be able to support
two opposite meanings in a same memory trace.