Abstract
Abstract Understanding how people forget is one of the fundamental goals of the science of memory. Recent studies indicate that humans can voluntarily regulate awareness of unwanted memories by stopping the retrieval process that would ordinarily bring past experience into awareness. Event-related potential (ERP) research on memory retrieval reveals that electrophysiological effects with specific timing and scalp topography serve as markers of memory processes. This systematic review examines the literature regarding EEG alterations in memory suppression, highlighting their results on electrophysiological indicators. A systematic review from January 2007 to November 2017 was conducted using PubMed, Embase and ScienceDirect databases. As results, 12 studies were eligible for inclusion. Quantitative EEG can be a objective tool for studying the mechanisms involved in memory suppression. There is evidence that a parietal positivity around 400-800ms after cue presentation is an ERP marker of conscious recollection during memory retrieval and a larger N2 deflection during retrieval suppression predicted greater suppression-induced forgetting.
Highlights
Compreender como as pessoas esquecem é um dos objetivos fundamentais da ciência da memória
Event-related potential (ERP) findings based on Think/ No-Think” (TNT) task revealed significant differences between think (T) responses and memory suppression in nothink (NT) condition
Regarding the studies included in this systematic review, some interesting findings were obtained to answer the question if there is an EEG pattern for memory suppression
Summary
Compreender como as pessoas esquecem é um dos objetivos fundamentais da ciência da memória. A pesquisa de Potenciais Relacionados a Eventos (PRE) sobre recuperação de memória revela que os efeitos eletrofisiológicos, com temporização específica e topografia do couro cabeludo, servem como marcadores de processos de memória. Esta revisão sistemática examina a literatura sobre alterações de EEG na supressão de memória, destacando seus resultados em indicadores eletrofisiológicos. Há evidência de que uma positividade parietal em torno de 400-800ms após a apresentação da pista é um marcador de PRE de lembrança consciente durante a recuperação da memória. La investigación de Potenciales relacionados con eventos (PRE) en la recuperación de la memoria revela que efectos electrofisiológicos sirven como marcadores de los procesos de memoria. Esta revisión sistemática examina la literatura sobre las alteraciones en EEG en la supresión de la memoria, destacando sus resultados en indicadores electrofisiológicos. This systematic review aims to highlight electrophysiological indicators associated to memory suppression tasks extracted from articles that used “Think/ No-Think” (TNT) paradigm
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