Abstract: One of the most contentious questions in psychology concerns the extent to which unwanted memory can be voluntarily controlled. The presently proposed research specifically aims to investigate the influence of top-down memory control strategies (such as direct suppression or thought substitution) over memory retrieval and the underlying neurocognitive mechanisms. In the context of memory detection, participants will encode real-life memories via a lab crime scenario. They will then be led to an event-related brain potential (ERP)-based concealed information test (CIT) that aims to identify the suspect who possesses crime-relevant memories. We will investigate direct suppression (in experiment 1), thought substitution and retrieval practice (in experiment 2) in the ERP-based CIT. To investigate the neurocognitive mechanism underlying memory control, we plan to measure the frontal-central N2, which is an ERP measure of conflict monitoring during memory inhibition (Bergstrom et al., 2009); and P3, an ERP marker of memory updating and recollection during memory retrieval (Donchin & Coles, 1988; Rosenfeld, 2011; Rugg & Curran, 2007). We predict memory control will be associated with distinctive electrophysiological profiles (such as larger N2 and attenuated P3) underlying memory control.
|Effective start/end date||12/1/13 → 6/30/14|
- American Psychological Association (Letter 12/12/2013)