title: Accessing forgotten memory traces from long-term memory via visual movements.
abstract: Because memory retrieval often requires overt responses, it is difficult to determine to what extend forgetting occurs as a problem in explicit accessing of long-term memory traces. In this study, we used eye-tracking measures in combination with a behavioral task that favored high forgetting rates to investigate the existence of memory traces from long-term memory in spite of failure in accessing them consciously. In two experiments, participants were encouraged to encode a large set of sound-picture-location associations. In a later test, sounds were presented and participants were instructed to visually scan, before a verbal memory report, for the correct location of the associated pictures in an empty screen. We found the reactivation of associated memories by sound cues at test biased oculomotor behavior towards locations congruent with memory representations, even when participants failed to consciously provide a memory report of it. These findings reveal the emergence of a memory-guided behavior that can be used to map internal representations of forgotten memories from long-term memory.
authors.affiliation: Cognition and Brain Plasticity Unit, Institute of Biomedical Research of Bellvitge (IDIBELL) Barcelona, Spain.
authors.forename: Estela
authors.initials: E
authors.lastname: Càmara
authors.affiliation: Cognition and Brain Plasticity Unit, Institute of Biomedical Research of Bellvitge (IDIBELL) Barcelona, Spain ; Department of Basic Psychology, University of Barcelona Barcelona, Spain.
authors.forename: Lluís
authors.initials: L
authors.lastname: Fuentemilla
keywords: associative memory; eye movements; forgetting; implicit memory; long-term memory