Repetition suppression and reactivation in auditory-verbal short-term recognition memory.

ABSTRACT: The neural response to stimulus repetition is not uniform across brain regions, stimulus modalities, or task contexts. For instance, it has been observed in many functional magnetic resonance imaging (fMRI) studies that sometimes stimulus repetition leads to a relative reduction in neural activity (repetition suppression), whereas in other cases repetition results in a relative increase in activity (repetition enhancement). In the present study, we hypothesized that in the context of a verbal short-term recognition memory task, repetition-related "increases" should be observed in the same posterior temporal regions that have been previously associated with "persistent activity" in working memory rehearsal paradigms. We used fMRI and a continuous recognition memory paradigm with short lags

SUBMITTER: Buchsbaum BR 

PROVIDER: S-EPMC2677654 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature